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Saab 99 LE, model 1974 — Ignition and starting
Saab 99 LE, model 1974 — Fuel injection (D-Jetronic)
20 Ignition switch
2.5
4.0
6 Ballast resistor
checked on the car
226 SV 0.75
lit with the ignition on
119 SV 1.0
227 SV 0.75
118e GN/VT 1.0
22 Fuse box
Headlamp main beams are not fused: they come
straight from lighting relay 8:F (lighting sheet).
(lighting sheet)
→ right headlamp, dipped beam
44a GR 1.0
(lighting sheet)
7 BR/VT 1.0
Relay 21's coil earths through lighting relay 8:31
(lighting sheet).
→ left headlamp, dipped beam
The distributor’s contact breaker points switch the coil’s terminal 1 to earth. The injection’s
trigger contacts are in the distributor too (injection sheet).
Bar 3–4 · parking and tail lights, fed from light switch 10:5
F3 · 8 A
58 GN 0.75
(lighting sheet)
50 GN 1.0
54 GN 0.75
F4 · 8 A
(lighting sheet)
57 BL 0.75
58 ign. switch
(lighting sheet)
53 BL 0.75
(lighting sheet)
terminal 16 feeds the coil’s side of it directly (119e SV 1.0), so the coil gets full voltage for
(it goes with a belt warning lamp).
95e VT 1.0
2
95e VT 1.0 ← fuse 11 (power sheet)
4
acceleration
contacts
195f RD 0.75
85
contact (closed in P and N) energises relay 89, which joins 84a GL 1.5 to 84b GL 1.5 and so
330 SV 0.75
86
21 RD/VT 1.0
(signals sheet)
91 GR 4.0
185 GR 1.5
85
74e GR 6.0
4 Starter
234 RD 2.5 → master relay 101:30/51 (injection sheet)
1 RD 16.0
F10 · 8 A
−
DF
(interior sheet)
95e VT 1.0
(ignition sheet)
→ seat heating element 64, via 58 seat heating
→ inhibitor switch 90:2, reversing lights
BL Blue
BR Brown
GL Yellow
GN Green
traced (cable no. read)
GR Grey
RD Red
SV Black
VT White
ends on diagram
4.0
checked on the car
cable size, mm²:
0.75
1.5
2.5
70 SV 1.0
Thin black lines without a label: leads with no cable number.
BL Blue
BR Brown
GL Yellow
GN Green
GR Grey
RD Red
SV Black
VT White
cable size, mm²:
0.75
2.5
The cold-start valve gets current only while the starter turns (starter line, 231),
44 Oil pressure contact
W
Indicators and hazards
62 GN/VT 0.75 → indicator repeater,
combination instrument 47:6 (instruments sheet)
G
29f GR 0.75
13/28 Front lamp housing, R
112 BL 1.0
32 reversing
11
12
Clock removed: an aftermarket rev counter sits in its place, wired in series
with the coil’s feed at the ballast resistor (ignition sheet), with no feed or
earth of its own. The clock’s feed 13 BL 1.0 (from the lighter, live at all
times) and its earth 105 SV 0.75 are unused on the car and not drawn (check D1).
3
56b GN 0.75
48 Cigarette lighter (with lamp)
15 number plate
45 Temperature transmitter
its lamp’s own wiring is not shown
C°
130 GL 1.0
80 BL 1.0
9
C°
oil
23 Flasher unit
13 parking light, 28 indicator
earth: probably through the housing
106 SV 0.75
temperature
76 GR 1.0 ← bar 5–8, always live (power sheet)
8 Lighting relay
54 GN 0.75
1
brake
main
beam
2
59 GN 0.75
path (each starts at terminal 30)
lights off
–
30 → 1’s contact (up) → 2’s contact: open
nothing
flash, lights off
2
30 → 1’s contact (up) → 2’s contact → F
main beams
101 GN 0.75
109 SV 0.75
55a BL 0.75
62 GN/VT 0.75
Rear lamp block L
58 brake warning
15 number plate
headlamps on
1
30 → 1’s contact (down) → 3 → 56a or F
dipped or main
headlamps on, stalk pulled
1, 2
2 moves 3 over (56a ↔ F); it stays
dipped ↔ main
97/98 VT: signals sheet
9 Dimmer/flasher stalk
28e/28f RD: signals sheet
32 reversing
114e VT 0.75
14 tail
25a BL/VT: signals sheet
32 RD/VT 0.75 ← fuse 9, via 58 wiper
switch pin 1 (wipers sheet)
earth: probably through the housing
GR Grey
RD Red
SV Black
VT White
ends on diagram
60 inhibitor
reversing
BL Blue
GR Grey
135 SV 0.75
cable size, mm²:
2.5
13/27 Front lamp housing, L
57 BL: lighting sheet
26 SV 1.0 ← hazard repeater 26 (signals sheet)
13 parking light, 27 indicator
earth: probably through the housing
4.0
GR Grey
Main beams come straight from relay 8:F, not fused; dipped beams through fuses 1 and 2 (power sheet).
cable size, mm²:
BR Brown
GL Yellow
RD Red
SV Black
0.75
1.5
Inside 47 (its own terminal numbers): a + rail from 2 feeds both gauges and the oil (11), fuel warning (12), brake (5) and charge (1) lamps; an earth rail to 4 takes the gauges’ other leads
GN Green
RD Red
SV Black
0.75
1.5
2.5
95 VT 1.0
96 VT 1.0
GN Green
VT White
Rear lamp block, L
4.0
55a BL:
lighting sheet
32 reversing
29 Stop light contact
28 RD 1.0 ← fuse 5 (power sheet)
28 RD 1.0
15 number plate
28g RD 1.0
28e RD 1.0
30 stop
60 stop lights
53a BL:
lighting sheet
14 tail
27 indicator
earth: probably through the housing
and the main-beam (7) and indicator (6) lamps. The leads from 9 into the temperature gauge and from 1 into the charge lamp are grey: probably.
VT White
2.5
GL Yellow
Flasher 23 is fed on X from fuse 8 (21 RD/VT; always-live bar 5–8). Its L output, 22 GN, passes through hazard switch 25’s +
terminal to indicator switch 24’s 54 (22e GN); the stalk sends it on R (24b) or L (24a), through 59 indicators, to that side’s front and
rear indicators.
The flasher’s P terminal lights the indicator repeater in the instrument.
Switches are drawn at rest: 24 centre-off; 25 off, its bar touching none of its contacts. Pressed, 25’s bar probably joins the lamp
contact, +, R and L (the dotted marks), so the flasher feeds both sides and repeater lamp 26.
Repeater lamp 26 sits in hazard switch 25. Its earth side also takes 105 SV, the clock’s earth; the clock has been removed (rev
counter instead, check D1) and 105 is unused, so it is not drawn.
Stop light contact 29 closes when the brake pedal is pressed.
Reversing lights: switched by the gear selector’s inhibitor switch 90, closed in R (ignition sheet); on a manual-gearbox car a
reversing light switch takes the place of 60 reversing link.
Lamp housings and rear lamp blocks: no earth lead is drawn; each probably earths through its housing. The parking, tail and
number-plate bulbs are wired on the lighting sheet (open terminals here). In each rear block, tail light 14 and number-plate light 15
are joined inside the block; the link hops over the stop and reversing leads without joining them.
dash earth
BL Blue
BR Brown
95f VT 1.0
60 reversing
link
58 reversing
traced (cable no. read)
27 indicator
coil to the contacts it moves
faded blade: its other position
car’s right side at top
95f VT 1.0 ← inhibitor switch 90:4,
closed in R (ignition sheet)
62 GN/VT 0.75 ← flasher unit 23:P (signals sheet)
earth: probably through the housing
traced (cable no. read)
REAR
2
Brake and reversing lights
57 BL 0.75 ← fuse 4 (power sheet)
GN Green
1
18 Instrument panel
lights (two)
18
136 SV 0.75
43 Handbrake contact
53a BL 0.75
45 SV 1.0 → battery − strap,
earth (power sheet)
GL Yellow
24ae BL/VT 1.0
L
17 Switch light
30 stop
pull: earths S (main/dipped, or flash)
BR Brown
L
R
23a BL/VT 1.0
133 GN 0.75
115 GL 0.75
lights
4
107 SV 0.75
coils
BL Blue
24be RD/VT 1.0
23b RD/VT 1.0
110 GN 0.75
108 SV 0.75
drawn at rest: lights off, stalk released
state
2
32 RD/VT 0.75
42 Brake warning contact
8 Lighting relay: what it does
6
114 VT 0.75
147 SV 0.75
141 VT 0.75
5
41 BL/VT 0.75
41 BL/VT 0.75 ← lighting relay 8:F,
main beams (lighting sheet)
8:31 to the headlamp wipers: not fitted on this car
Every pull of the stalk moves 3 over, a flash with the lights off too, and 3 stays there until the next pull.
27 indicator, 23a BL/VT: signals sheet
R
54
25b RD/VT 1.0
90 SV 0.75 ← ignition switch relay 21:85,
its coil (power sheet)
1.5
22e GN 1.0
L
18
indicator
7
0.75
+
59 indicators
31
cable size, mm²:
22 GN 1.0
15 number plate
earth: probably through the housing
P
59 GN 0.75 ← fuse 3, via 58 tail lights (lighting sheet)
86
Cable key: number · colour · mm²
24 Indicator switch
16 Rheostat switch, panel illumination
charge
On this car a relay has been cut into 61 RD between
the alternator and this lamp (not drawn); what it
switches is still to be checked.
1
53 BL 0.75
fuel
gauge
58 tail lights
13 Parking light L
56b GN:
lighting sheet
57 front
indicator R
19 Glove compartment and heater control light
102 GN 0.75
39 GL 0.75
42b VT 1.0
61 RD 0.75
61 RD 0.75 → alternator D+ (power sheet)
53 BL 0.75 ← fuse 4 (power sheet)
26 Hazard repeater lamp
25 Hazard warning switch
59 GN 0.75 → rheostat 16,
panel lighting (instruments sheet)
56a
14 tail
32 reversing
X
80 BL 1.0 ← fuse 7, via 58 interior feed (interior sheet)
B
low fuel
50 GN 1.0 → bar 3–4: fuses 3 and 4 (power sheet)
54 GN 0.75 ← fuse 3 (power sheet)
21 RD/VT 1.0
47 Combination instrument
earth: probably through the housing
57 BL 0.75
54b GN:
lighting sheet
26 SV 1.0 → dash earth
(instruments sheet)
30 stop
30 stop
44b GL 1.5 ← fuse 1 (power sheet)
44a GR 1.0 ← fuse 2 (power sheet)
26 SV 1.0
21 RD/VT 1.0 ← fuse 8 (power sheet)
58 GN: lighting sheet
headlamps (4–5 and 8–3): probably
F
28 indicator
B its earth, W the low-fuel
lamp’s lead, G the gauge’s
14 tail
98 VT: signals sheet
44a GR 1.0
Rear lamp block, R
car’s right side at top
54b GN 0.75
5
LH
100 Thermostat contact
99 Cold-start valve
← starter line, live only while cranking: probably joins
at 60 starter signal (ignition sheet; check E1)
Terminal marks in light grey: probably. Cylinder numbers: probably.
23be RD/VT 1.0
46 SV 1.0
B
30f BR 0.75
29e GR 0.75
46 Fuel level
transmitter
28 indicator
28f RD: signals sheet
141e VT 0.75
Throttle switch: the full-load contact (14) probably closes only near full throttle.
FRONT
59 fuel sender
30e BR 0.75
29 GR 0.75
4
58 dimmer
59 cold start
pin 2
through its thermostat contact, which opens when warm.
4.0
Saab 99 LE, model 1974 — Indicators, hazards, brake and reversing lights
58 fuel gauge
P
10 Light switch
3
upper 11 main, lower 12 dipped
233 BL 0.75
41 Horn contact
off · parking (4–5) ·
S
231 GL 0.75
and the pump relay’s coil; the control unit runs the pump through the pump relay (219).
grey inside a part: probably
8
45 SV 1.0
1.5
pin 1
The master relay switches on with the ignition (181) and feeds the control unit (216, 224)
traced (cable no. read)
71 SV 1.0
25b RD/VT: signals sheet
1
185 GR 1.5 ← fuse 8 (power sheet)
59 cold start: where on the starter line it sits is still to be checked (check E1).
Rear lamp block R
2
185 GR 1.5
30/51
86
C°
182 SV 0.75
a part with its name (7 Distributor).
HT lead (no number)
earth: probably through the housing
3
86
A cable is labelled with its colour and size (7 BR/VT 1.0),
30 BR 0.75
30
181 GN/VT 0.75
181 GN/VT 0.75 ← ignition feed joint
by the coil (ignition sheet)
230 GR 0.75
85
75 RD 1.0 ← ignition switch 20:X (power sheet)
11/12 Headlamp L
87
in the boot, left
13 Parking light R
142 GR 1.5 ← bar 5–8,
always live (power sheet)
186 GR 1.5
87
103 Fuel pump
4-door saloon (this car)
44 GR 1.5 → bar 1–2:
fuses 1 and 2 (power sheet)
187 SV 1.5
30/51
234 RD 2.5 ← starter 30, battery + (power sheet)
31 SV 0.75
42a BL 1.5
in the distributor (ignition sheet)
224 GR 0.75
84e GL 1.5 ← ignition switch 20:50, via 58 ign. switch (power sheet)
REAR
41 BL/VT 0.75 → main-beam indicator,
combination instrument 47:7
(instruments sheet)
21
15
84h GL 0.75
Saab 99 LE, model 1974 — Instruments, warning lamps and panel lighting
11/12 Headlamp R
221 GN 0.75
232 SV 0.75
30: battery +, alternator, master relay
(power sheet)
On this car a relay has been cut into 61 RD (not drawn);
what it switches is still to be checked.
44b GL 1.5
12
96 Pressure sensor
85
Single horn, switched to earth by the
horn contact in the steering wheel.
46 SV 1.0 → battery − strap,
earth (power sheet)
212 BL 0.75
102 Fuel pump relay
40 Horn
28 indicator, 23be RD/VT: signals sheet
22
30
58 GN 0.75 ← fuse 3 (power sheet)
upper 11 main, lower 12 dipped
10
itself instead.
57 starter line
60 starter signal
probably on to 59 cold start: start signal
218 GL 0.75 and cold-start valve 231 GL 0.75
(injection sheet; check E1)
222 RD 0.75
whether it has relay 89 is check F1. A car without the relay has a short jumper (84c GL 1.5)
84f GL 1.5
Headlamp wipers (their own 3 A fuse, fed from bar 9–11): not fitted on this car.
58 GN 0.75
25
94 Throttle switch
Relay 89 is drawn as the factory wired the 1974 automatic. This car is a 1973 chassis, so
58 horn
car’s right side at top
8
50
Saab 99 LE, model 1974 — Lighting circuit
FRONT
24
C°
across the two pins of 57 starter line; a 1973 automatic may run the starter line through switch 90
spare: connected to nothing; probably the empty holder on this car
61 RD 0.75 ← charge warning lamp,
combination instrument 47:1 (instruments sheet)
23
101 Master relay
→ radiator fan relay 38:86, coil
F12 · 8 A
38 SV 1.5 ← radiator fan 37,
via 59 radiator fan (climate sheet)
7
95 Temperature
sensor I
4 Starter
→ washer motor 63
D+
3 Voltage regulator
45 SV 1.0 ← left headlamp earth
(lighting sheet)
coolant
16
67 RD 1.0
72 RD 1.0
D+
93 GL 1.0
22
17
idle
84e GL 1.5
→ wiper switch 61:54, via 58 wiper switch;
32 RD/VT on to combination instrument 47:2 (instruments sheet)
(climate sheet)
2 Alternator
73 GL 1.0
46 SV 1.0 ← right headlamp earth
(lighting sheet)
battery − strap
B+
D−
DF
13
full load
234 RD 2.5
(climate sheet)
21
97 Temperature
sensor II
→ heater fan switch 35:4
49 SV 1.0
D−
(wipers sheet)
20 BL 2.5
74 GR 6.0
12 V 60 Ah
89 GL 0.75
148 RD 0.75
F11 · 8 A
1 Battery
(wipers sheet)
20
28f RD 0.75
30
+
→ flasher unit 23:X
→ fuel pump relay 102:30/51
92 VT 4.0
87
16, 50: ignition sheet
→ interior lights, via 58 interior feed;
80 BL on to cigarette lighter 48 (instruments sheet)
(injection sheet)
14 BR 1.0
19
intake air
Bar 9–11 · live with ignition on, fed from relay 21
F9 · 8 A
18
97 VT 1.0
90 SV 0.75
90 SV 0.75 → lighting relay 8:31,
then earth (lighting sheet)
17
24a BL/VT 1.0
30/51
16
216 GR 0.75
F8 · 8 A
1
14
30/51
24b RD/VT 1.0
86
47
Start inhibitor relay
84a GL 1.5
21 Ignition switch relay
→ stop light contact 29
→ radiator fan relay 38:30/51
(interior sheet)
15
89
(climate sheet)
64 GL 1.0
14
9
Relay 89 and switch 90 let the starter turn only in P or N: with the ignition on, switch 90’s start
→ tail light 14, left, via 58 tail lights
84b GL 1.5
F7 · 8 A
13
213 BR 0.75
3
119e SV 1.0
76 GR 1.0 → light switch 10:4 (lighting sheet)
5e BR/VT 0.75
36 GR 1.5
76 GR 1.0
12
217 VT 0.75
95f VT 1.0 → reversing lights, via 60 inhibitor reversing (signals sheet)
87
F6 · 8 A
11
214 RD 0.75
20
142 GR 1.5
142 GR 1.5 → lighting relay 8:30 (lighting sheet)
10
98 Trigger contacts
60 inhibitor start
(signals sheet)
9
220 BR 0.75
closes the starter line.
28 RD 1.0
8
209 GL 0.75
Seat-belt warning contact 88 on the gear selector: probably not fitted
Bar 5–8 · always live, fed from the alternator B+ (battery)
F5 · 8 A
7
203 RD/VT 0.75
cylinder 4
Switch 90’s wires: check E2.
195h GL 0.75
4 GR 1.5
6
206 BR/VT 0.75
light switch
→ front parking light 13, left
5
211 SV 0.75
and reversing
→ tail light 14, right, via 58 tail lights;
59 GN on to the panel lighting (instruments sheet)
4
204 GN/VT 0.75
Switch 90 is drawn in P: start contact closed, reversing contact open (it closes in R).
1
90 Start inhibitor
starting.
3
205 BL/VT 0.75
Ballast resistor 6 lowers the coil’s voltage while the engine runs. While cranking, starter
→ front parking light 13, right
cylinder 3
2
98 VT 0.75
44b GL 1.5
cylinder 1
1
219 SV 0.75
F1 · 8 A
F2 · 8 A
50 GN 1.0 ← light switch 10:5,
parking and tail lights (lighting sheet)
cylinder 2
earth
point
Bar 1–2 · dipped beams, fed from lighting relay 8:56a
44 GR 1.5
44 GR 1.5 ← lighting relay 8:56a,
dipped beams (lighting sheet)
Injectors
1
58 ign. switch
Pins 2 and 25 are not used.
218 GL 0.75
54bf GN 0.75 → gear indicator light 91 (ignition sheet)
Cables 201–224 each run to the pin with the same last two digits (201 to pin 1, 224 to pin 24).
93
Rev counter: aftermarket, in the dashboard where the clock was (check D1), wired in series with the coil’s feed.
The ignition feed 118e, 181 and 195g meet at a joint by the coil; the rev counter’s black lead takes the current
to the meter and its brown lead brings it back to the resistor, the only lead on that end. If a lead comes off with
the engine running, it stops; while cranking, 119e still feeds the coil straight from the starter.
rev counter
92 Control unit
118e GN/VT 1.0 ← ignition switch 20:15, via 58 ign. switch (power sheet)
223 GL 0.75
1.5
5 Ignition coil
215 GN 0.75
0.75
7 Distributor
210 VT 0.75
VT White
208 BR 0.75
SV Black
118e GN/VT 1.0 → joint by the coil, rev counter (ignition sheet)
1
75 RD 1.0
4e GR 1.5
5 BR/VT 0.75
RD Red
228 SV 0.75
54bf GN 0.75 ← ignition switch 20:15 (power sheet)
15
75 RD 1.0 → light switch 10:8 (lighting sheet)
4
GR Grey
181 GN/VT 0.75 → master relay 101:86, coil (injection sheet)
traced (cable no. read)
58 ign. switch
84e GL 1.5 → start inhibitor relay 89:30/51,
via 57 starter line (ignition sheet)
3
GN Green
cable size, mm²:
15
118 GN/VT 1.0
2
GL Yellow
235 SV 0.75
50
BR Brown
195g GN/VT 0.75
X
84 GL 1.5
30
BL Blue
54bf GN 0.75
207 RD 0.75
30 battery; 50 start;
15, 54 and X probably live with the key on.
contacts not drawn
54
229 SV 0.75
91 Gear indicator light
201 BL 0.75
Saab 99 LE, model 1974 — Power distribution
25a BL/VT 1.0
Supply: 32 RD/VT from fuse 9, shared with the wiper feed at 58 wiper switch, pin 1. Instrument earth (47:4) goes through the lighter body (109 SV) and on by 108 SV to the dash earth.
Brake lamp (47:5): brake warning contact 42 and handbrake contact 43 are in parallel on it, either earths it; 115 GL probably joins 114 VT on the instrument side of 58 brake warning.
4.0
Relay 8 changes over between main and dipped each time stalk 9 earths its terminal S (headlamps on);
Contacts as drawn: brake warning contact 42 open; handbrake contact 43 closed (plunger out: handbrake on, probably).
with the headlamps off, the same pull flashes the main beams.
The headlamps need the ignition on (light switch 10:8 is fed from ignition switch 20:X); parking and tail lights and the flash do not.
56b and 55a, from the number-plate lights, end on the diagram: where they go is not known.
traced (cable no. read)
Panel lighting (lit with the tail lights from fuse 3, dimmed by rheostat 16): 101 GN feeds switch light 17 and, by 110 and 133 GN, the two panel lights 18;
grey inside a part: probably
102 GN feeds glove compartment light 19. The panel lights earth at switch light 17’s earth side and on by 107 SV; light 19 earths by 106 SV through the lighter.
Choke warning lamp and choke contact: probably not fitted on this injection car (injection cars have a spare switch where the choke control would be); their feed 146 BR would leave pin 1 of 58 wiper switch (wipers sheet).
Saab 99 LE, model 1974 — Wipers and washers
Saab 99 LE, model 1974 — Heater fan and radiator fan
Saab 99 LE, model 1974 — Interior lights and seat heating
Seat heating
Interior lights
Fed from fuse 7 (always live). Lamps 50, 51 and 52 return through dome light 50’s switch: on (to earth), off (as drawn) or door (to the door line).
Each door contact 54 and switch 53 earth that door line in parallel: an open door, or 53 closed, lights them while 50’s switch is at door.
32 RD/VT 0.75 → combination instrument 47:2,
its supply (instruments sheet)
93e GL 1.0
93 GL 1.0 ← fuse 11 (power sheet)
choke warning lamp’s feed 146 BR:
probably not fitted (instruments sheet)
14 BR 1.0 ← fuse 9 (power sheet)
94 SV 1.0
60 seat feed
59 seat heater
14e BR 1.0
1
54
56 Trunk light contact
55 Trunk light
61 Wiper switch
58 seat heating
62 Two-speed wiper motor
93f GL 0.75
31b
123 BL 0.75
80 BL 1.0 → cigarette lighter 48
(instruments sheet)
at the left hinge; switches 55 on its earth side
65 GL 0.75
64 GL 1.0 ← fuse 7 (power sheet)
51 Dome light, forward (at the mirror)
16e GN 1.0
53b
20 BL 2.5
2
slow
5
M
15 RD 1.0
15e RD 1.0
53
3
20 BL 2.5 ← fuse 10
(power sheet)
same earth point as
120 SV 0.75 from switch 53
64 Seat heating element with thermostat
fas
t+
wa
r
Radiator fan
Heater fan
53a
4
washer
1
18 BL 1.0
18e BL 1.0
37e SV 1.5
66be SV 0.75
57 heater fan
59 radiator fan
S
52 Ignition switch light
37 GN 1.5
pin 2
87
30/51
36 GR 1.5
S: not used (headlamp wipers not fitted)
row 1
33 GL 2.5
+
36 GR 1.5 ← fuse 6
(power sheet)
8
35 Heater fan switch
pin 1
85
86
148 RD 0.75
148 RD 0.75 ← fuse 9
(power sheet)
series resistor (slow speed)
row 2
88e SV 0.75
2
66e BL 0.75
drawn off: the bar
touches no contact
5
38e SV 1.5
35 GR 1.0
60 interior switch
row 3
66 SV 0.75
150 SV 1.0
138 SV 2.5
38 SV 1.5
39 Thermostat contact
the same earth point as the heater fan motor’s
138 SV (climate sheet)
C°
149 SV 0.75
53 Interior lighting switch
open when cold, as drawn;
closes when the coolant is hot
36 Heater fan motor
122 SV 0.75
the same earth point as the wiper motor’s
175 SV (wipers sheet)
58 door contacts
38 SV 1.5 → battery − strap, earth
(power sheet)
63 Washer motor
122b SV 0.75
120 SV 0.75
37 Radiator fan motor
175 SV 1.0
89 GL 0.75 ← fuse 9
(power sheet)
66ae SV 0.75
6
6
58 wiper switch
54 Door contacts
65e GL 0.75
Which seat or seats it heats, and whether there is a switch: check I2.
38 Radiator fan relay
66g SV 0.75
17e GR 1.0
switch: on (earth) / off (as drawn) / door
Fed with the ignition on (fuse 11). The thermostat is inside the
element, drawn closed (it is closed while cold, probably).
17 GR 1.0
50 Dome light, middle
4
she
fast
4
66f SV 0.75
16 GN 1.0
121 GR 0.75
3
58 interior feed
65f SV 0.75
C°
122a SV 0.75
which two are the
rear doors: check I1
same earth point as 94 SV 1.0
88 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
2.5
4.0
(seat heating)
Fuse 9 (ignition on) feeds the wipers through 14 BR to 58 wiper switch, pin 1 (pins numbered from the top: our count), and the washer motor through 89 GL. The washer motor is switched to earth by the wiper switch: 88 SV, pin 6, 88e SV.
Wiper motor 62: 16 GN on 3 feeds the fast brush and 15 RD on 5 the slow one; the third brush is on the housing, earthed by 175 SV. The bar from M to the housing’s corner is probably the drive, not a wire.
Parking: the motor’s change-over 2, joined to 5 outside the motor, rests on 1 (18 BL to the switch’s 31b) and swings to 4 (17 GR to 53a). Switched off, 61 feeds 53a and earths 31b, so away from park the motor probably runs on slow through 4, and at park 1 earths the slow brush
and brakes it.
Switch 61 is drawn at rest (off): its lever joins 54 to 53a and the earthed pivot to 31b. Grey dashed lines: its other positions, probably slow (54 to 53), fast (54 to 53b) and fast with the washer (54 to the upper 53b finger, and the washer terminal earthed).
traced (cable no. read)
BL Blue
BR Brown
GL Yellow
GN Green
Radiator fan: relay 38 (drawn at rest, contact open) takes its coil feed from fuse 9, live with the ignition on, and its contact feed from fuse 6, always live.
GR Grey
RD Red
SV Black
VT White
Thermostat contact 39 earths the coil when the coolant is hot, so the fan runs only with the ignition on. 37 GN becomes 37e SV beyond radiator fan connector 59,
cable size, mm²:
0.75
1.5
2.5
61’s washer terminal: its number is not known; ‘washer’ is our name for it. The contact tied to 61’s housing (earth) is not named.
18e BL runs under the switch and up its right side into 31b, crossing 88e SV.
switch position line (the lever’s other positions)
Headlamp wipers: not fitted on this car; switch 61’s S, which would switch their relay, has nothing on it.
Saab 99 LE, model 1974: wiring redrawn
so both of the motor’s own leads are black; its 38e side is earthed twice, by 38 SV to the battery − strap and by 150 SV to an earth of its own.
Heater fan: fuse 10, live with the ignition on, feeds switch 35. Probably position 1 is slow (4 to 6: 35 GR through the series resistor) and position 2 fast
traced (cable no. read)
grey inside a part: probably
4.0
(4 to 8 and 6: 33 GL straight to the motor). The series resistor has no number of its own; it sits on the motor side of heater fan connector 57, between rows 2 and 1.
short dashes inside a switch: its other positions
The motor returns through row 3 and 138 SV to the earth point it shares with the wiper motor.
grey dashes inside a relay: the coil moving its blade
Thin black lines without a label: leads with no cable number.
Wires: 187 traced, 3 end on the diagram, 2 checked on the car. Left off: 15 cables of parts not fitted or probably not fitted, and the 84c GL 1.5 jumper, which only a car without start inhibitor relay 89 has. Colour codes are Swedish (GL gul = yellow, SV svart = black, VT vit = white). Generated 04 October 2026.
BL Blue
BR Brown
GL Yellow
GN Green
The door line is one line: 66be, 66ae and 66g SV 0.75 from dome light 50; 66 and 122 SV 0.75 on switch 53’s pivot; 122b and 122a SV 0.75 beyond 58 door contacts.
GR Grey
RD Red
SV Black
VT White
Door contacts 54 and trunk light contact 56 are drawn closed: plunger out, with the door or lid open (probably).
Which two door contacts are the rear doors is still to be checked (check I1).
cable size, mm²:
0.75
traced (cable no. read)
1.5
2.5
4.0
64 GL 1.0 (fuse 7 to the interior lights) is a cable, not part 64, the seat heating element.
Seat heating: its return 94 SV 1.0 is drawn to an earth of its own here, but it shares one earth point with 120 SV 0.75 from switch 53.
Thin black lines without a label: leads with no cable number.