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Saab 99 Turbo, model 1979 — Power distribution
Saab 99 Turbo, model 1979 — Lighting circuit
Saab 99 Turbo, model 1979 — Ignition, starting and fuel injection
ignition switch connector, 12-pole
58
SV Black
1.5
VT White
2.5
not traced yet
FRONT
4.0
grey = probably: 15 runs on to the upper-left contact,
grey inside a part: probably
22 Fuse box
Bar 1–2 · parking and tail lights, fed from light switch 4
54
X
30
F1 · 5 A
42 BL 0.75
41 GN 1.0
10 Light switch 4 (lighting sheet) →
(lighting sheet)
58 ign. switch
12 BR/VT 1.0
43 BL 0.75
40 GR 1.0 → 10 Light switch 3 (lighting sheet)
58 ign. switch
F2 · 5 A
11/12 Headlamp R
→ 14 L rear lamp: tail
44 GN 0.75
30 RD 1.0 → 10 Light switch 2 (lighting sheet)
(lighting sheet)
340 RD 0.75 → 122 radio (radio sheet)
7 GR 2.5
58 ign. switch
21 Ignition switch relay
12 BR/VT 0.75
86
11 VT 4.0
87
Bar 3–6 · live with ignition on, fed from relay 21
F3 · 8 A
117 RD 1.5
135 VT 1.0
F4 · 8 A
58 door switches
85
(signals sheet)
in parallel, no horn relay: switched
on the earth side by horn switch 41
85 BR 1.0
222a BR/VT 0.5
263 SV 0.75 ← 102:31 (ignition sheet)
F5 · 8 A
→ 113:85 (climate sheet) → 212 SV → earth joint 158
15: 123 GN/VT 1.5 → 147 Ballast resistor, coil (ignition sheet)
(wipers sheet)
380 GL 1.0
(ignition sheet)
140 GL 1.0
50: 122 GL 2.5 → 89 Start relay (ignition sheet)
pin 1
→ 64 Seat heating, via 58 brake/reversing, 60 seat feed, 59 seat heater
at 58: 214 BL → 116 Heated window switch (climate sheet), on to the tachometer; at 60: 150 GL → seat belt warning (interior sheet)
(ignition sheet)
F6 · 16 A
220 BR/VT 0.5
(lighting sheet)
103 BL 2.5
(climate sheet)
280 GR 1.5
→ 73 Service outlet (ignition sheet)
F8 · 16 A
210 RD 2.5
201 SV 0.75 ← 89:85 Start relay coil (ignition sheet)
8 Lighting relay
twin bulb 21/5 W: 5 W parking 13,
21 W corner lamp 118
27 indicator: signals sheet
lower bulb: side back-up light
47 GN 0.75
126 BL 1.0
3 SV 2.5 → central earth star
16, 50: ignition sheet
195 RD 0.75 → 47 charge warning lamp (instruments sheet)
50
30
260 GR 1.5
F11 · 5 A
6 GR 4.0
1 RD 16.0
→ 102 Fuel pump relay 30
131 RD 1.0
1 Battery
2 Alternator
−
K2
28 SV 1.0
58 tail lamps
H
56b
S
31
86
58 stalks
9
Cable key: number · colour · mm²
31 GL 0.75
8 Lighting relay states
state
coils pulled
path (letters in 8)
lights
1 lights off
none
30 → C → B → A
nothing: flash blade A–D open
2 headlamps on
K2
30 → C → E → F → H → 56b
dipped
3 main, latched
K2, K1 pulse
30 → C → E → F → G → 56a
main + dash lamp 47; next pulse: dipped (check D13)
4 flash, lights off
Saab 99 Turbo, model 1979 — Instruments and warning lamps
9 Dip/flash stalk
latching dip/main + flash; each path starts at terminal 30
K1, stalk held
30 → C → B → A → D
cable size, mm²:
0.75
1.5
2.5
BL Blue
BR Brown
GL Yellow
GN Green
traced (cable no. read)
GR Grey
RD Red
SV Black
VT White
not traced yet
grey inside a part: probably
4.0
32 VT 0.75
pulse on S toggles dip/main;
flash works with ignition off
main on the car (check D9); D drawn on 56b: check D12
266 SV 0.75
3 4 5
High-speed fuel boost
2 1 6
Richens the mixture above about 130 km/h (140) or at 62° throttle (137).
380 GL 1.0 ← fuse 5
(power sheet)
260 GR 1.5 ← fuse 10
(power sheet)
142 Solenoid valve
382 BL 0.75
140
15
58 engine, pin 1
relay side probably
GN 1.0 (check E1)
96 Warm-up regulator
on the car: speedometer cable, engine bay (check E7)
Speed transmitter
-31
on the car: front of the engine, on the control
pressure line (check E7); 382 and 383 on one contact,
earth on the other (check E12)
381 SV 0.75 → brake warning switch 42 (instruments sheet)
→ 192 SV → earth joint 158 (power sheet)
268 SV 0.75
Pins in their order round the socket (check E11):
1 battery +, 2 earth, 3 start, 4 ignition +15,
5 engine speed (284a from 102, 204 to the tachometer),
6 empty.
92 Thermo-time switch
383 GR 0.75
380a GL 1.0 ← fuse 5
(power sheet)
94 Cold-start valve
58 engine, pin 3
137 Throttle switch, 62°
273 GR 0.75
272 BR 0.75
earths the valve when cold
faded blade: position when pulled
Saab 99 Turbo, model 1979 — Indicators, hazards, brake and reversing lights
44 Oil warning switch
58 engine
pin 2
fed while cranking
Headlamps need the ignition on (except the flash, stalk 9); parking/tail lights do not: light switch 2 is fed from ignition
switch X, light switch 3 from the always-live bar. Headlamps are unfused: relay 30 is fed straight from the supply bar (20 GR 1.5).
Not RHD-specific: circuits should match the car, but harness routing and part positions may differ.
All bulbs in a lamp housing share its one earth (rear lights: check R3). The rear is drawn for the Combi Coupé (this car): fuse 2 probably also
feeds the number-plate lamps through 44 and connector 59. These lamps, 59 and 47/47a (dashed): not yet checked on the car (checks R1, R4, R5).
Corner lamps (dashed): dash switch 117 with pilot lamp, fed from fuse 5 (checks E19, F4); wiring probably as drawn,
colours: check E19b. 221 reaches the left housing through pin 2 of front lamp connector 58; 222a branches off for the right.
One bulb, two filaments: 5 W parking 13 from light switch 10, no ignition; 21 W corner lamp 118 from 117, ignition on (check E21).
Not drawn: a rear fog lamp (check E23) or a relay that cuts the corner lamps on dipped beam (check E22); probably neither is fitted.
Relay 8: the car flashes the main beams (check D9), but flash contact D is drawn on 56b (dipped); which pin carries main: check D12.
115 SV 0.75 ← 39 Thermostat switch (climate sheet)
191 SV 2.5
284 BL 0.75
284a BL 0.75
204 GL 0.75 → tachometer
110 (instruments sheet)
earth: check R3
20 GR 1.5
5a GR 2.5
95 Aux. air regulator
31
30
30
32 VT 0.75
83 SV 0.75 ← 83 Interval relay (wipers sheet)
60 tank earth
265 GR 0.75
Fuel pump relay
27 indicator
76 BL/VT: signals sheet
→ 113:85 (climate sheet), earth via 212 SV and joint 158
192 SV 0.75 ← 42 Brake warning switch (instruments sheet), with 381 SV from 140 (ignition sheet)
B+
57 fuel pump
heated
14 tail
2
23 GR 1.0
107 SV 2.5 ← 36 Heater fan motor, via 57 heater fan (climate sheet)
262 SV 2.5
M
102
263 SV 0.75 → relay 21:85 (power sheet)
280 GR 1.5 ← bar 7–12
(power sheet)
30 brake
42 BL 0.75
25 BL 1.0
158 Earth joint
→ 29 Brake light switch
5 GR 4.0
central earth star: engine and body earth
K1
90 BL 1.0 ← 62 Wiper motor housing (wipers sheet)
D+
+
C
→ 23 Flasher unit 49
(signals sheet)
261 GR 2.5
58 door switches
row 4
heated; on with the pump
100 SV 0.75 ← relay 67:87 (wipers sheet)
W
B
G
56a
281 SV 1.5 → earth joint 158
(power sheet)
32 reversing
136 VT: signals sheet
283 GN/VT 0.75 ← 58 engine pin 4,
switch side (top of sheet)
73 Service outlet (TSI)
six linked blocks: one earth point
(signals sheet)
377 GN/VT 0.75 ← 58 engine pin 4,
switch side (top of sheet)
Rear lamp cluster L
(fuses 1–2 and bar 7–12 shown)
(ignition sheet)
70 RD/VT 1.0
F12 · 5 A
92 SV 1.0 ← 63 Washer pump (wipers sheet)
87
31
15 Number-plate lamps
11/12 Headlamp L
281 SV 1.5 ← 73 Service outlet, pin 2 (ignition sheet)
→ lighter, clock, interior light (160 GL)
16
F10 · 8 A
148 SV 0.75
→ 38 Radiator fan relay 86 (coil)
(radio sheet)
15
4 Starter
22 Fuse box
D
F
212 SV 0.75 ← 113:85 Heated window relay (climate sheet)
(climate sheet)
103 Fuel pump
122a GL 2.5
50
47a GN 0.75
drawn at rest: lights off, stalk released
E
139 VT 0.75
→ 113 Heated window relay 30
F9 · 8 A
30
132 RD: signals sheet
(climate sheet)
190 SV 0.75 ← fuel level transmitter 46 (instruments sheet)
32 reversing
137 VT: signals sheet
Fuse 1 · 5 A
13 Parking L
360 SV 0.75
202 GR 1.5
→ 89 Start relay 30 (ignition sheet)
4 Starter
113 RD 0.75
261a GR 0.75
16
27 BL/VT 0.75
20 GR 1.5
→ 8 Lighting relay 30 (lighting sheet)
124 BL 1.5
87a
144 Pressure switch (overboost)
→ 117 Corner lamp switch
→ 38 Radiator fan relay 30/51
4
378 GN/VT 0.75
main-beam
warning lamp
43 BL 0.75
(climate sheet)
87
3
123d GN/VT 1.0
1 RD 16.0 ← battery +
(power sheet)
30 brake
133 RD: signals sheet
85
2
157 Spark plugs
47 Instrument
A
110 GL 1.5
201 SV 0.75 → earth joint 158 (power sheet)
59 number plate
(probably at the tailgate)
221 BR/VT 0.5
→ 35 Fan switch
F7 · 16 A
Start relay
14 tail
1
1
361 SV 1.0 → washer pump 63 earth (wipers sheet)
→ 137 Throttle switch, fuel boost
Bar 7–12 · always live, fed from battery / alternator
89
earth: check R3
139a VT 0.75
→ 140 Speed transmitter, fuel boost
94 BR 0.75
→ 65 Fuse holder, 3 A → 67 Headlight wiper relay (wipers sheet)
44 GN 0.75
50 GN 0.75 →
rheostat 16,
panel lighting
(instruments sheet)
149 SV 0.75
16
30
28 indicator
79 RD/VT: signals sheet
Fuse 2 · 5 A
twin bulb 21/5 W: 5 W parking 13,
21 W corner lamp 118
28 indicator: signals sheet
lower bulb: side back-up light
16
REAR
58 tail lamps
→ 83 Interval relay, terminal 15
(interior sheet)
380a GL 1.0
pin 1
1
Rear lamp cluster R
13 Parking R
→ 62 Wiper motor, terminal 4
Ignition control unit
pin 4
202 GR 1.5 ← bar 7–12 (always live)
(power sheet)
Supply bar, fuses 7–12: always live
fed from battery via 5 GR 4.0 + 5a GR 2.5
45 GN 0.75
→ 61 Wiper switch via 58 stalks, where 182 → 47 (instruments sheet)
(wipers sheet)
85b BR 0.75
58 stalks
146
7
15
86
221a BR/VT 0.5
41 Horn switch
31d
Combi Coupé (this car)
220 BR/VT 0.5 ← fuse 5
(power sheet)
138 BL ← reversing 31
390
123b GL 1.5
0.6 Ω
58 ign. switch
row 1
41 GN 1.0
221 BR/VT 0.5
77 BL/VT: indicator 27
row 6
4
220 may be GL (check E19b)
4
31
screened
15
50
118 SV 1.5
(wipers sheet)
85a BR 0.75
58 front lamps
118 SV: horns
2
3
→ 31 Reversing light switch, via 58 brake/reversing
10 GR 4.0
30/51
1
40 Horn
printed 1.0 by the pin, 0.75 at 21:
probably 0.75
33 SV 0.75
58
0.4 Ω
15
223 SV 0.75 → clock 49
earth, with 128 SV,
then via 48 and 129
to earth (radio sheet)
front lamp connector
40 Horn
→ 13 R front parking light
6 Distributor
122 GL 2.5
dash switch with pilot lamp; probably wired as drawn
24 GL 1.0
5 Coil
147 Ballast resistor
58 engine
391
117 Corner lamp switch
→ 14 R rear lamp: tail; 15 number-plate lamps (probably)
at 58 tail lamps: 50 GN → 16 Rheostat (instruments sheet)
58 door switches
123 GN/VT 1.5
3
top: off (town light S/N/DK) /
parking / headlamps
26 VT 1.0
29 SV 1.0
7 GR 2.5 ← bar 7–12
(power sheet)
30
10 Light switch
5
→ 13 L front parking light
(lighting sheet)
45 GN 0.75
2
1
(lighting sheet)
119 RD 1.0
15
120 SV 1.0
50
20 Ignition switch
30
6
Not RHD-specific: circuits should match the car, but harness routing and part positions may differ.
30: battery in (grey)
X: live with key on (red)
13 SV 0.75
50 crosses it to the lower-left one
40 GR 1.0
6-5: top position, town light
(S/N/DK only). This car has
no town light (check E21b);
wires on 6-5: check D11
car’s right side at top
271 RD 1.0
0.75
393 SV 1.5
20 Ignition switch
X
392 SV 0.75
RD Red
cable size, mm²:
30 RD 1.0
traced (cable no. read)
267 GR 0.75
dashed: its other positions
GN Green
electronics
GR Grey
key rotor at rest, fed from 30;
GL Yellow
394 GN/VT 1.0
BR Brown
282 GL 1.0
BL Blue
7 GR 2.5
20 Ignition switch
BL Blue
BR Brown
GR Grey
GL Yellow
RD Red
cable size, mm²:
0.75
GN Green
SV Black
1.5
VT White
2.5
traced (cable no. read)
4.0
HT lead
grey inside a part: probably
checked on the car
Overboost cut: pressure switch 144 (closed at rest) is in the fuel pump relay’s feed (15). If it opens, the relay drops out and the pump stops.
263 SV (pump relay 31) goes to relay 21, probably its 85, and on to earth joint 158.
The pump relay also takes an engine-speed signal from 146 (284 BL), which normally stops the pump when the engine isn’t turning.
100 SV, headlight wiper relay 67’s earth, also lands on 102:31. 201 SV goes to 158 directly.
Start relay 89: its coil is earthed directly (201 SV), so it pulls in whenever the key is at start. It feeds starter terminal 50 (the solenoid)
123d (+15 for 146) leaves engine connector 58 pin 4 on the 147 side, before the ballast
from the always-live bar, and 87a feeds 394 to the joint of 147’s two resistors, bypassing the 0.4 Ω one while cranking (the 0.6 Ω stays in).
resistor. 377 and 283 leave the pin on the switch side, each its own lead beside 123.
92 may also have a second element between its two terminals (perhaps a second heater); it is not drawn, as what it is is not known.
102’s joined bottom pair (marked 31) takes the speed signal (284, 284a): probably terminal 1.
Sender cable 390/391 is screened; 392 SV earths the screen. Pin and row numbers of the 58 connectors are our own count, top to bottom (engine: check E1).
381 SV (140’s earth) lands on 42’s earth side, probably spliced into 192 SV there.
Not RHD-specific: circuits should match the car, but harness routing and part positions may differ.
266, 268, 392 and 393 SV go to the central earth star. Relay 21, joint 158: power sheet.
Saab 99 Turbo, model 1979 — Radio, speakers and accessory feeds
74 GN 1.0
Indicators and hazards
engine connector 58, pin 5
184 BL 1.0
73 GN 1.0
71 GN/VT 0.75 → 47 dash indicator
lamp (instruments sheet)
tail lamp connector 58, rows 4 and 5
186 BR 0.75
185 GR 0.75
Fuse 11 · 5 A
11
47 Combination instrument
52 SV 0.75 ← panel light
connector 59: instrument
earth 179 and the panel
lamps (instruments sheet)
+
always-live bar
49
45 Temperature transmitter
11
12
54
70 RD/VT 1.0
C
49a
3
122 Radio junction box, 8-pole
24 Indicator switch
69 SV 0.75
31
earth point shared
with 129, 157, 341 SV
25 Hazard switch
1
23 Flasher unit
engine connector 58, pin 6
183 GL 1.0
9
C°
oil
L
46 Fuel level
B
low fuel
R
5
2
6
3
7
4
8
L
R
REAR
transmitter
68 RD/VT 1.0
4, 8 unused
Combi Coupé (this car)
75 BL/VT 1.0
67 BL/VT 1.0
fuel sender connector 57
temperature
Rear lamp cluster, right
FRONT
fuel gauge
190 SV 0.75 → tank earth connector 60 → 191 SV 2.5
→ earth, with pump earth 262 (ignition sheet)
78 RD/VT 1.0
79 RD/VT 1.0
stalk switch
connector 58
28 Front indicator, right
in the front lamp housing with parking light 13
80 RD/VT 1.0
right speaker connector 59
1
130 Loudspeaker, right
front lamp
connector 58, pin 3
203 BR 0.75 ← heated window switch 116 (climate sheet)
r/min
2 Alternator
Brake and reversing lights
50 GN 0.75 ← fuse 2 (right park, tail, plate), off 44 GN
at tail lamp connector 58 (lighting sheet)
main beam
indicator
16 Rheostat (dimmer)
7
5
6
2
18
56 SV 0.75
57 GN 0.75
62 SV 0.75
18
71 GN/VT 0.75 ← 23 flasher unit C (signals sheet)
ignition-on bar
→ via front lamp connector 58 to the side back-up lights (lighting sheet)
27 BL/VT 0.75 ← 8 lighting relay 56a (lighting sheet)
2.5
126a BL 1.0
381 SV 0.75 ← speed transmitter 140, -31 (ignition sheet)
192 SV 0.75 → earth joint 158 (power sheet)
BL Blue
BR Brown
GL Yellow
GN Green
GR Grey
RD Red
SV Black
VT White
cable size, mm²:
0.75
1.5
2.5
Switches are drawn at rest. Pressed, hazard switch 25 closes its lamp, R and L contacts together, so + feeds both sides (68 RD/VT, 67 BL/VT).
Terminals: hazard switch 25 has +, R, L and one for its lamp (markings: check D4); indicator switch 24 has 54, R and L. 73 GN and 74 GN both land on +.
25’s lamp contact is open at rest: the lamp stays dark with the indicators and blinks with the hazards (check D7). Grey: the end of 29’s blade and its right contact; probably open at rest.
4.0
25’s lamp terminal: 69 SV goes to earth and 52 SV to panel light connector 59, where the instrument earth (179 from 47) and the panel lamps join it, so 69 earths them too.
24’s own outputs are 75 BL/VT and 78 RD/VT, through stalk switch connector 58 to ignition switch connector 58. 76/79 (rear) pass ignition switch connector 58
traced (cable no. read)
S
Not RHD-specific: circuits should match the car, but harness routing and part positions may differ.
Radiator fan
VT White
The radio’s + (340 RD) comes from ignition switch X, so it’s live only with the key on (check D1: dead with the key out).
0.75
1.5
2.5
4.0
not traced yet
grey inside a part: probably
Lighter 48’s earth terminal gathers 128 SV (clock) and 215 SV (heated window switch lamp); 129 SV 1.0 takes them to the earth point shared with 69, 157 and 341 SV (the radio’s earth).
checked on the car
223 SV (dashed, like the rest of the corner lamp circuit on the lighting sheet): corner lamp switch 117’s pilot lamp earths on the clock’s earth terminal with 128 SV; not confirmed on the car yet (check D11).
Seat heating
59 radiator fan
Interior lights
Fuse 9 feeds lamps 52, 50 and 51 side by side. They return through dome light 50’s switch: straight to earth, or to the door
110 GL 1.5
F7 · 16 A
58 brake/reversing
60 seat feed
160 GL 0.75 ← 126 BL from fuse 9, through tail lamp connector 58 (radio sheet)
86
85
ignition-on bar
114 SV 0.75
64 Seat heating element with thermostat
6
4 washer (pull from 0)
t°
59 seat heater
140 GL 1.0
5
113 RD 0.75
always-live bar
87 GN 1.0
53b
F5 · 8 A
30/51
7
F
line, which switch 53 (closed) or an open door (door switches 54) earths. Luggage light 55 has its own switch, 56 (all: check I2).
37 Radiator fan motor
111 GN 1.5
87
7
86 RD 1.0
53
?
M
central earth star
8
?
1
31b
S
M
5
4
85a BR 0.75 → wiper motor 62:4
115 SV 0.75 → left headlamp common; earth via 28 SV (lighting sheet)
54c
58 stalks
2
114a BL 0.75
3
3
4
5
39 Thermostat switch: closes when hot
2
182 BR/VT 0.75 → 47:2
combination instrument
(instruments sheet)
85 BR 1.0
85a BR 0.75 ← fuse 4 (left)
1
89 SV 0.75
housing
ignition-on bar
85
INT
31
31
15
31
Seat belt warning
74 Resistor, low speed
Heater (ventilator) fan
91 GL 0.75
With the ignition on, lamp 72 lights while the driver is unbuckled,
or while someone sits in the passenger’s seat unbuckled (check I3).
83 SV 0.75 → earth joint 158 (power sheet)
71 Seat belt contact, passenger’s
57 heater fan
90 BL 1.0 → earth joint 158 (power sheet)
88 BL 0.75
only with seat contact 69 (check I3)
105 GL 2.5
F6 · 16 A
88a BL/VT 0.75
103 BL 2.5
6
4
36 Heater fan motor
104 GR 1.0
6
speed 8: full; speed 6: through 74
91a GL 0.75
63 Washer pump
85b BR 0.75
ignition-on bar
switch 56 a plunger at the tailgate
striker; 166 may be black
161 GL 0.75
162 SV 0.75
164 BL 0.75
165 SV 0.75
51 Dome light, rear-view mirror
167a SV 0.75
167 SV 0.75
60 interior switch
57 dome light
50 Dome light, door pillar
switch: door / off (as drawn) / on, probably (check I2)
70 Seat belt contact, driver’s
on the car: 74 is fixed under this motor’s housing (check D5)
107 SV 2.5 → earth joint 158 (power sheet)
the right of the luggage area, 10 W;
52 Ignition switch light
167 SV 0.75
8
Combi Coupé (check R7): lamp 55 on
53 Interior lighting switch
35 Fan switch
84 GN/VT 0.75
56 Luggage compartment light switch
166 BL 0.75
214 BL 0.75 → heated window switch 116 (climate sheet)
60 thermostat
4
55 Luggage compartment light
163 GL 0.75
Q
0
62 Wiper motor
83 Interval relay
53a
P
168 SV 0.75
joined
probably
unsure
hop: not joined
?: at 2, S only if F’s flat top (on line 2) is a contact;
54c at 2 and 3 only through P–Q (probably open: check D10).
4
SV Black
Saab 99 Turbo, model 1979 — Interior lights, seat heating, seat belt warning
112 SV 1.5
58 stalks
INT
2
F4 · 8 A
RD Red
38 Radiator fan relay
3
3 fast
GR Grey
Where junction box 122 sits on this RHD car is not known yet (check D6); on LHD cars it is in the right-hand trim panel under the dash.
Saab 99 Turbo, model 1979 — Radiator fan, heater fan, heated rear window
1 intermittent
?
Speaker polarity: 342 and 344 to +, 343 and 345 to −; left and right as on this car (check I1): right-hand 344/345, left-hand 342/343. Junction box 122’s pins are drawn in their physical order.
126a BL to the lighter probably joins that pin on the fuse side, so the link is drawn grey. The clock’s 127 BL takes off 126a.
138 BL, from 31’s switched side, feeds the front housings’ side back-up lights (check E16). Brake and reversing light connector 58: 132, 135 and 138 pass on its pins 2, 3 and 4 (counted top to bottom); pin 1 is 140 GL (interior sheet).
54c
0 off
2 slow
GN Green
traced (cable no. read)
Not RHD-specific: circuits should match the car, but harness routing and part positions may differ.
61 positions: terminals joined
31b 53 53a INT 53b
GL Yellow
cable size, mm²:
132 and 136 run to the left cluster; 133 and 137 leave its brake and reversing feeds for the right one (at the cluster, probably; the dots are drawn short of it, for room).
61 Wiper switch
BR Brown
Front lamps on the left, rear lights on the right, the car’s right side at the top, as on the lighting sheet. Each lamp housing has one earth for all its bulbs; the parking lights and the tail-light feeds are on the lighting sheet.
44 and 45 are drawn with the sender symbol (heavy square with a diagonal, not a winding), each with its own earth lead (no cable number). 44 probably earths the oil lamp at low oil pressure; 45 is probably a resistance that falls as the coolant warms.
Windscreen wipers and washer
BL Blue
Fuse 9 (lid: cigar lighter, compartment light, clock): 126 BL enters tail lamp connector 58 and leaves the same pin as 160 GL to ignition switch light 52 and the interior lights.
and run to the rear clusters with no other connector; 77/80 (front) leave 75/78 just before ignition switch connector 58, and 77 then passes front lamp connector 58 (pin 3).
grey inside a part: probably
Rear lamp clusters (3-door Combi Coupé): four bulbs each, probably in the order drawn. No earth lead is printed for them (check R3): each bar goes to earth in grey.
Saab 99 Turbo, model 1979 — Wipers and washers
215 SV 0.75 ← heated window switch 116’s lamp (climate sheet)
Flasher 23 is fed on 49 from fuse 11 (always-live bar). 49a (73 GN) feeds the hazard switch’s +, which feeds the indicator switch’s 54; C (71 GN/VT) works the dash indicator lamp. Its 31 is probably earthed through the mounting (grey).
Fuel level transmitter 46: its third lead, 190 SV (no terminal name printed), is its earth. It meets the pump’s earth 262 at tank earth connector 60 and goes on as 191 SV 2.5 to earth, probably near the tank.
grey inside a part: probably
always-live bar
42 Brake warning switch
59 GN 0.75
Earth: 47’s 4 (179 SV) goes through panel light connector 59 and 52 SV to hazard switch 25’s lamp terminal, which 69 SV earths (signals sheet); the panel lamps (lower left) earth the same way.
traced (cable no. read)
129 SV 1.0
earth point shared with 69, 157, 341 SV
136 VT 1.0
43 Handbrake switch
Supply: 182 BR/VT from fuse 4, branching off the wiper feed 85 BR at stalk switch connector 58. Tachometer: signal 204 GL from service outlet 73 pin 5 (beside 284a), through tachometer connector 60; supply probably 203 from heated window switch 116.
4.0
126 BL 1.0
9
138 BL 1.0
150 GL 0.75
1.5
F9 · 8 A
31 Reversing light switch
188 VT 0.75
128 SV 0.75
48 Cigarette lighter
58 tail lamps
Oil and temperature wires pass engine connector 58, pins 5 and 6 (our own count, top to bottom; check E1); the fuel sender wires pass tail lamp connector 58 (rows 4 and 5) and fuel sender connector 57 (3-pole).
VT White
160 GL 0.75 → ignition switch light 52 (interior sheet)
ignition switch connector 58, row 7
187 VT 0.75
49 Clock
223 SV 0.75 ← corner lamp switch 117’s pilot lamp (lighting sheet)
Accessory feeds
Inside 47 (its own terminal numbers): a + rail from 2 (182) feeds both gauges and the oil (11), low-fuel (12), brake (5) and charge (1) lamps; an earth rail to 4 (179) takes the gauges’ third leads and the main-beam (7) and indicator (6) lamps.
GN Green
127 BL 0.75
27 Rear indicator, left
135 VT 1.0
3
182 BR/VT 0.75 ← fuse 4, off 85 BR at stalk switch connector 58, pin 5 (wipers sheet)
58 SV 0.75
76 BL/VT 1.0
Fuse 3 · 8 A
Charge lamp: 195 RD 0.75 from alternator D+. Main beam: 27 BL/VT from lighting relay 8. Indicator: 71 GN/VT from flasher 23. Brake: 187 VT, then 188 VT to handbrake switch 43 and brake warning switch 42; either earths it.
0.75
+
14 Tail light, left
179 SV 0.75 → panel light connector 59 (lower left), then 52 → 69 → earth
19
cable size, mm²:
30 Brake light, left
141 SV 1.0
53 GN 0.75
54 SV 0.75
55 GN 0.75
60 SV 0.75
SV Black
131 Loudspeaker, left
342 BR/VT 0.75
42 BL from fuse 1 (lighting sheet)
17
RD Red
132 RD 1.0
4
188 VT 0.75
GL Yellow
132 RD 1.0
59 panel light connector
61 GN 0.75
BR Brown
−
32 Reversing light, left
always-live bar
51 GN 0.75
GR Grey
131 RD 1.0
12
left speaker connector 59
343 GN/VT 0.75
brake and reversing
light connector 58
110 Tachometer
179 SV 0.75 ← 47 terminal 4 (above)
BL Blue
Rear lamp cluster, left
29 Brake light switch
Fuse 12 · 5 A
52 SV 0.75 → hazard switch 25’s lamp terminal
→ 69 SV 0.75 → earth (signals sheet)
left and right as on this car (check I1)
+
77 BL/VT 1.0
360 SV 0.75
D+
Panel lighting (sidelights on; dimmed by 16)
17 Switch lights (two; which switches: check D18)
18 Instrument panel light (two)
19 Glove compartment and heater control lights
(drawn as one lamp; one bulb or two: check D18)
−
344 RD/VT 0.75
32 Reversing light, right
27 Front indicator, left
195 RD 0.75
345 BL/VT 0.75
30 Brake light, right
137 VT 0.75
in the front lamp housing with parking light 13
X
44 GN from fuse 2 (lighting sheet)
133 RD 0.75
brake
ignition switch connector 58
340 RD 0.75
14 Tail light, right
204 GL 0.75 ← service outlet 73, pin 5, beside 284a (ignition sheet)
charge
341 SV 0.75
20 Ignition switch
X: live with key on
ignition switch
connector 58
361 SV 1.0 → washer pump 63 (wipers sheet)
tachometer connector 60
28 Rear indicator, right
car’s right side at top
170 SV 0.75
on its own (check I3)
M
169 SV 0.75
171 SV 0.75
156 BR 0.75
361 SV 1.0 ← right front lamp housing (lighting sheet)
13 SV 0.75 ← lighting relay 8:31 (lighting sheet)
92 SV 1.0 → earth joint 158 (power sheet)
59 belt contacts
Heated rear window
100 SV 0.75 → relay 102:31 (ignition sheet)
F8 · 16 A
156 BR 0.75
212 SV 0.75 → earth joint 158 (power sheet)
95a RD 0.75
69 Seat contact, passenger’s seat
123
Headlight wipers
58 door switches
33 SV 0.75 ← ignition switch relay 21:85 (power sheet)
210 RD 2.5
8
116 Heated window switch
closes when sat on (check I3)
67 Headlight wiper relay
65 Fuse holder
M
Bar 3–6
87
94 BR 0.75
66 Headlight wiper motor
always-live bar
87a
3A
59 belt lamp
ignition on, unfused
95 RD 0.75
85
97 BR 0.75
98 GL 0.75
88a
95b RD 0.75
30
88
54 Door switches
probably closed with a door open
85
151 BR 0.75
99 SV 0.75
113 Heated window relay
87
86
72 Seat belt warning lamp
157 SV 0.75
123
M
66 Headlight wiper motor
86
215 SV 0.75 → lighter 48’s earth,
then 129 SV to earth (radio sheet)
213 BL 0.75
96 GR 0.75
214 BL 0.75 ← fuse 5, with 140 GL at brake and reversing light connector 58 (interior sheet)
150 GL 0.75
115 Heated rear window
the lamp’s own lead, printed 150 GL like the fuse 5
203 BR 0.75 → tachometer 110 (instruments sheet)
feed but not joined to it; earths on 157 SV (check I4)
58 door switches, row 5
earth point shared with 69, 129, 341 SV
211 GL 2.5
100a SV 0.75
99a SV 0.75
BL Blue
BR Brown
GL Yellow
GN Green
GR Grey
RD Red
SV Black
VT White
cable size, mm²:
0.75
1.5
traced (cable no. read)
grey inside a part: probably
2
switch position line and its number
2.5
4.0
Wipers run from fuse 4 on the ignition-on bar: 85 BR to the switch (53a), 85a BR to motor terminal 4 and 85b BR to relay 83’s 15. Relay and pump earth at joint 158 (83 SV, 92 SV).
Relay 83: at rest the changeover joins 88 (switch 31b) to 88a (motor park, 62:2); energised, it puts 15 (+) on 88. A block (timer, probably) drives the coil. 85 takes 91 GL (54c) and 91a GL (pump): washing probably wipes too.
Motor 62: 87 GN (3) and 86 RD (5), through stalk switch connector 58, feed the fast and slow brushes (probably 53b, 53); the third (common) brush is earthed to the housing. The line from M to the top wall is probably the drive, not a wire.
The park changeover on 2 (88a) rests on 1 (earth), which shorts the rotor to stop it, and swings to 4 (85a BR, +). 89 SV loops from 1 to the housing corner; 90 BL leaves there for joint 158.
Switch 61: lever at rest (0), a dashed line through the pivot for each notch (1 intermittent, 2 slow, 3 fast). White slots insulate the lever’s arms: its 31b and 53a sides join apart. Pulling (4) adds S and 54c to the 53a group.
The park link from the lever (up, over and down) stops short of 53 (grey: probably joined; park, braking and interval need it). P–Q, between the 54c and S lines, is drawn closed, which would run the washer at fast: probably open (check D10).
All of switch 61’s wires pass stalk switch connector 58 (pins 2–8, our own count; drawn in two parts). 96 GR probably starts at S and passes pin 3; 182 BR/VT (instruments) leaves 85 on the fuse side of pin 5.
Headlight wipers: unfused tap 94 BR from bar 3–6, a 3 A glass fuse in holder 65, relay 67. Outside 67, 100a SV joins 85 to 87, so 100 SV earths the coil.
Relay 67: 88 is + from the 3 A fuse; 95a RD takes it to upper plug row 2 (probably) and 95b RD on to lower row 2 (the park switches); 88a switches 98 GL to the upper motor’s diode (row 1). Rows of 123 are our own count, from the top.
97 BR runs from upper plug row 3 to lower plug row 1. Both motors run together (check E10), so the upper motor must pass the start feed on: probably a link from row 1 to row 3 inside it (not drawn).
Not RHD-specific: circuits should match the car, but harness routing and part positions may differ. Light-grey terminal labels are probable: on 61 31b, 54c, INT, 53, 53b; on 83 INT; on 58 pin 3.
Saab 99 Turbo, model 1979: wiring diagram
BL Blue
BR Brown
GL Yellow
GN Green
Radiator fan: relay 38 (drawn at rest, contact open) is fed from fuse 7 on the always-live bar. Motor 37 has no earth of its own: 112 SV takes it through radiator fan connector 59 to the
BL Blue
BR Brown
GL Yellow
GN Green
Seat heating: fuse 5 (ignition-on bar) feeds 140 GL 1.0 through brake and reversing light connector 58, seat heating feed connector 60 and
GR Grey
RD Red
SV Black
VT White
central earth star. Thermostat switch 39 earths the relay coil through 115 SV and the left headlamp’s earth, 28 SV, so the drawing lets the fan run after the engine is switched off. 114a is drawn BL;
GR Grey
RD Red
SV Black
VT White
seat heater connector 59 to seat heating element 64: two elements in series with a thermostat between them, drawn open (probably its warm state: it closes when cold).
it may be SV (black) on the car: check E14. Heater fan: fuse 6 is on the ignition-on bar. Switch 35 rests on its unwired terminal (probably off); its short-dashed lines are its other positions: 8 feeds
cable size, mm²:
0.75
1.5
2.5
4.0
traced (cable no. read)
grey inside a part: probably
short dashes inside a switch: its other positions
Wires: 190 traced, 7 not traced yet, 10 checked on the car. Colour codes are Swedish (GL gul = yellow, SV svart = black, VT vit = white). Generated 27 September 2026.
the motor directly; 6 goes through resistor 74, whose far lead lands on heater fan connector 57’s corner (probably row 1; drawn grey). The motor returns through 57 row 3 on 107 SV to joint 158.
Heated rear window: fuse 8 (always live) feeds relay 113 (at rest, open); switch 116, drawn off, energises it through 213 BL. 113:85 also takes the earths 13 SV (relay 8) and 33 SV (relay 21);
Its return, 141 SV 1.0, shares seat heater connector 59 (141 SV on one pin, 140 GL on the other) but is drawn straight to its earth, which 168 SV from switch 53 shares.
cable size, mm²:
0.75
traced (cable no. read)
212 SV carries all three to earth joint 158. 116’s right terminal takes the feed 214 BL from fuse 5 on the ignition-on bar, joined to 140 GL at brake and reversing light connector 58 (check D14),
and passes it on 203 to the tachometer; its lamp is probably the “on” indicator and earths on 215 SV through lighter 48. Combi Coupé: the heated window is in the tailgate (probably about 200 W);
its feed 211 passes door switch connector 58 (row 5) and may also pass number-plate connector 59 (check R5). Not RHD-specific: circuits should match the car, but harness routing and part positions may differ.
grey inside a part: probably
1.5
2.5
4.0
Fuse 5 also feeds the seat belt warning (150 GL), heated window switch 116 (214 BL; check D14; climate sheet) and the Turbo’s high-speed fuel boost
(380 GL to speed transmitter, component 140; 380a GL to throttle switch 137; ignition sheet).
Door switch connector 58, rows counted top to bottom: 169 and 171 on row 1 (170 probably too: its join is hidden in the frame), 156 on row 2; row 3 is empty; 261, 211 and 123 use rows 4 to 6 (other sheets).
Thin black lines without a label: leads with no cable number. Not RHD-specific: circuits should match the car, but harness routing and part positions may differ.