Here are wiring diagrams of Volvo 960 model years 1993. This is motronic multiport injection system (MFI) wiring diagrams. For USA/Canada Volvo 960 model (B6304F) here. For B6304F/G model here. And below are wiring diagrams keys.
2/1 Headlight relay with bulb failure sensor.
2/2 Foglight relay.
2/3 Regulator DIM-DIP.
2/4 Intermittent wiper relay, windshield wipers.
2/5 Relay, seat belt reminder/ignition key warning.
2/6 Overload relay 151.
2/7 Central lock relay.
2/8 Overdrive relay.
2/10 Power unit ECC.
2/11 Relay, engine cooling fan.
2/12 Relay injectors.
2/13 Relay fuel injection.
2/14 Relay glowplug.
2/15 Relay exhaust temperature sensor.
2/16 Intermittent wiper relay, tailgate wiper.
2/18 Transient protector ABS.
2/38 Timer relay exhaust gas recirculation EGR.
2/45 Relay P-shift lock.
2/46 Relay ignition coil.
2/48 Blocking relay A/C.
3/1 Ignition lock.
3/2 Light switch with rheostat.
3/3 High and low beam switch.
3/4 Cruise control operation.
3/6 Hazard warning flasher switch.
3/7 Foglight switch.
3/8 Switch with timer relay, heated rear window/door mirrors .
3/9 Brake light switch .
3/10 Backup (reversing) light switch .
3/12 Windshield wash/wipe switch .
3/13 Rear window wash/wipe switch .
3/14 Switch, lock button.
3/15 Power window lift switch driver’s door for driver’s door.
3/16 Power window lift switch driver’s door for driver’s side, rear.
3/17 Power window lift switch driver’s door for passenger’s side front.
3/18 Power window lift switch driver’s door for passenger’s side rear.
3/19 Power window lift switch driver’s side rear.
3/20 Power window lift switch passenger’s side front.
3/21 Power window lift switch passenger’s side rear.
3/22 Switch for rear power window lifts.
3/23 Switch for power window lifts, driver’s side.
3/24 Switch for power door mirror, passenger’s side.
3/25 Switch, power sunroof.
3/26 Control module, driver’s seat.
3/27 Control module, passenger’s seat.
3/28 Switch for heated driver’s seat.
3/29 Switch for heated passenger’s seat.
3/31 Door switch driver’s door .
3/32 Door switch passenger’s side front.
3/33 Door switch driver’s side rear.
3/34 Door switch passenger’s side rear.
3/35 Door switch tailgate (5-door) .
3/36 Switch, glove compartment light.
3/37 Horn contacts.
3/38 Switch, brake pedal.
3/39 Switch, clutch pedal.
3/40 Start inhibit switch, automatic transmission.
3/42-1 Switch on transmission.
3/42-2 Oil pressure switch, kickdown valve.
3/43 Switch in gear lever.
3/44 Seat belt lock, left front seat.
3/45 Seat belt lock, right front seat.
3/47 Parking brake switch.
3/50 Throttle position (TP) switch/TP sensor.
3/52 Switch, power antenna.
3/59 Beam width control.
3/63 Mode selector AW30-40/43.
3/66 Idle air control (IAC) switch EGR.
3/71 Gear position sensor.
3/78 Lock unit, tailgate.
4/1 Overheating protector, driver’s seat.
4/2 Overheating protector, passenger’s seat.
4/3 Control module. Cruise control.
4/5 Safety circuit, SRS.
4/6 Control module ECC.
4/9 Sensor unit SRS.
4/10 Control module EZ-K (DI) system.
4/12 Control module Motronic (MFI) system.
4/15 Power stage EZ-K (DI) system.
4/16 Control module ABS.
4/21 Control module TCU.
4/23 Control module LH-jetronic 2.4 (MFI) system.
4/28 Control module timing.
4/29 Control module driver’s seat.
4/38 Power stage Motronic 1 (MFI) system.
4/39 Power stage Motronic 2 (MFI) system.
51 Combined instrument.
5 3 Ambient temperature sensor.
6/1 Windshield wiper motor.
6/2 Washer motor, front.
6/3 Right headlight wiper motor.
6/4 Left headlight wiper motor.
6/5 Central locking motor passenger’s side front.
6/6 Central locking motor passenger’s side rear.
6/7 Central locking motor driver’s side rear.
6/8 Central locking motor tailgate.
6/9 Power window lift motor driver’s door.
6/10 Power window lift motor driver’s side rear.
6/11 Power window lift motor passenger’s side front.
6/12 Power window lift motor passenger’s side rear.
6/13 Power door mirror, driver’s side.
6/14 Power door mirror, passenger’s side.
6/15 Motor, power sunroof.
6/16 Motor driver’s seat backrest.
6/17 Motor up-down, front edge of driver’s seat.
6/18 Motor up-down, rear edge of driver’s seat.
6/19 Motor fore-aft driver’s seat.
6/24 Cruise control vacuum pump.
6/25 Starter motor.
6/27 Servo motor throttle control.
6/28 Cabin fan motor.
6/29 Engine cooling fan.
6/30 Wiper motor, tailgate.
6/31 Fuel pump.
6/32 Tailgate wiper motor.
6/33-1 Fuel level sensor.
6/33-2 Fuel primer pump.
6/34 Power antenna.
6/35 Parking heater.
6/36 Central locking motor driver’s side front.
6/38 Actuator, left.
6/39 Actuator, right.
7/1 Bulb failure sensor, rear.
7/4 Brake fluid level sensor.
7/5 Washer fluid level sensor.
7/6 Oil pressure sensor.
7/7 Engine coolant temperature (???) sensor.
7/9 Engine coolant temperature (???) sensor, ECC.
7/10 Cabin temperature sensor.
7/11 Ambient temperature sensor.
7/12 Solar sensor.
7/15 Heated oxygen sensor (H02S) .
7/16 Engine coolant temperature (???) sensor, fuel/ignition system.
7/17 Mass air flow (???) sensor.
7/21 Camshaft position (CMP) sensor.
7/22 Engine speed (RPM) sensor.
7/23 Knock sensor (KS), rear.
7/24 Knock sensor (KS), front.
7/25 Impulse sensor.
7/26 Pressure sensor, EGR.
7/28 Engine coolant temperature (???) diesel.
7/30 Pressure sensor for charge pressure, turbodiesel.
7/31 Sensor ABS left front.
7/32 Sensor ABS right front.
7/33 Sensor speedometer and ABS.
7/34 Thermoelement three-way catalytic converter (TWC) .
7/36 Exhaust temperature sensor.
7/37 Temperature sensor EGR.
7/38 Eow-speed pressure sensor, engine cooling fan.
7/40 High-speed pressure sensor, engine cooling fan.
7/41 High-speed sensor, A/C.
7/47 PTC-resistor air pre-heating.
7/53 Low-pressure sensor A/C.
7/54 Throttle position (TP) sensor.
7/69 Ambient temperature sensor.
7/73 Engine coolant level sensor.
7/74 Oil temperature sensor AW30-40/43.
7/76 Temperature sensor TCU.
8/1 Operating solenoid, overdrive.
8/2 Operating solenoids, ECC.
8/3 Solenoid coupling, A/C.
8/5 Idle air control (IAC) valve.
8/6-11 Injection valves.
8/13 Fuel valve, diesel.
8/14 Solenoid valve, overload protector.
8/15 Hydraulic unit ABS.
8/17 Converter, EGR.
8/24 3-way valve EGR.
8/28 Turbo control valve.
8/30 Steering wheel module SRS.
8/31 Passenger module SRS.
8/33 Igniter, seat belt tensioner, driver’s side.
8/34 Igniter, seat belt tensioner, passenger’s side.
8/36 Solenoid P-shift lock.
9/1 Cigar lighter.
9/2 Heated rear window.
9/3 Heater element driver’s seat backrest.
9/4 Heater element passenger’s seat backrest.
9/5 Heater element driver’s seat cushion.
9/6 Heater element passenger’s seat cushion.
10/1 Left front light.
10/2 Right front light.
10/5 Left front foglight.
10/6 Right front foglight.
10/9 Left parking light and front turn signal.
10/10 Right parking light and front turn signal.
10/11 Left parking light, front.
10/12 Right parking light, front.
10/13 Left turn signal front.
10/14 Right turn signal front.
10/15 Left turn signal side repeater (not USA/CDN) .
10/16 Right turn signal side repeater (not USA/CDN) .
10/17 Right tail light.
10/18 Left tail light.
10/19 Extra brake light.
10/20 Left number plate light.
10/21 Right number plate light.
10/22 Roof light.
10/24 Trunk light.
10/25 Roof light, load area (5-door) .
10/26 Reading light, left rear.
10/27 Reading light, right rear.
10/29 Glove compartment light.
10/30 Door open warning light driver’s door.
10/31 Door open warning light passengers door.
10/32 Door open warning light driver’s door.
10/33 Door open warning light passenger’s door.
10/34 Warning light, rear seat belts.
10/35 Switch lighting, sunroof switch.
10/36 Control panel lighting.
10/37 Cigar lighter illumination.
10/38 Ashtray illumination, rear.
10/39 Seat heater switch illumination.
10/40 Gear selector illumination.
10/43 Right brake light.
10/44 Right parking light rear.
10/45 Right parking / tail light.
10/46 Right rear foglight.
10/47 Light, right rear turn signal.
10/48 Right backup (reversing) light.
10/50 Left brake light.
10/51 Left parking light, rear.
10/52 Left parking / tail light.
10/53 Left rear foglight.
10/54 Lamp left rear turn signal.
10/55 Left backup (reversing) light.
10/64 Right high beam.
10/65 Right extra high beam.
10/66 Right low beam.
10/68 Left high beam.
10/69 Left extra high beam.
10/70 Left low beam.
10/72 Ashtray illumination, front.
10/74 Indicator light exhaust temperature.
10/75 Indicator light charge pressure, turbodiesel.
10/76 Indicator light diesel preheating.
10/77 Indicator light SRS.
10/78 Indicator light seat belt.
10/79 Indicator light overdrive (auto.)/gear change indicator .
10/80 Indicator light overdrive (man.) .
10/81 Indicator light engine coolant level .
10/82 Indicator light ABS .
10/83 Indicator light parking brake .
10/84 Indicator light brake warning .
10/85 Indicator light high beam .
10/86 Indicator light oil pressure .
10/87 Indicator light charging .
10/88 Indicator light bulb failure sensor .
10/89 Indicator light rear foglights.
10/90 Indicator light washer fluid level sensor .
10/91 Service indicator .
10/92 Indicator light trailer .
10/93 Indicator light Malfunction Indicator Lamp (MIL) .
10/94 Indicator light right turn signal .
10/95 Indicator light left turn signal .
10/96 Instrument lighting .
10/114 Vanity mirror light, right side .
10/115 Vanity mirror light, left side.
10/116 Spare fuse illumination.
11/41 Fuse, combined instrument.
15/1 Positive terminal.
15/2 30-rail in relay unit.
15/4 151-rail in relay unit.
15/6 Fuse-protected 30-rail in relay unit.
15/9 X-rail in relay unit.
16/3 Loudspeaker right front door.
16/4 Loudspeaker left front door.
16/5 Loudspeaker right rear door.
16/6 Loudspeaker left rear door.
16/7 Loudspeaker instrument panel right side.
16/8 Loudspeaker instrument panel left side.
16/10 Horn 1.
16/11 Horn 2.
16/17 Loudspeaker rear parcel shelf left side.
16/18 Loudspeaker rear parcel shelf right side.
17/1 Service socket for starter motor operation.
17/8 Service socket: clamp 1, cyl. 1 (engine) .
17/11 OBD diagnostic socket.
18/1 Bridge connector 1.
18/2 Bridge connector 2.
19/1 Engine coolant temperature (???) sensor.
19/2 Engine speed (RPM) sensor.
19/5 Fuel level sensor.
20/1 Ignition coil.
20/3-8 Spark plugs.
20/15 Series resistance.
31/1 Ground connector right front wing.
31/2 Ground connector left front wing.
31/3 Ground connector body.
31/4 Ground connector engine.
31/5 Ground connector for heated rear window (4-door) .
31/6 Ground connector left A-post.
31/9 Ground connector at parking brake lever.
31/10 Ground connector right A-post.
31/11 Ground connector left tail light cluster.
31/12 Ground connector right tail light cluster.
31/13 Ground connector in trunk.
31/14 Ground connector at relay unit.
31/16 Ground connector at windshield wiper motor.
31/17 Ground connector at power sunroof motor.
31/18 Ground connector at centre console.
31/26 Ground connector generator.
31/28 Ground connector at overdrive operating solenoid.
31/30 Ground connector A/C solenoid coupling.
31/31 Ground connector rail in relay unit.
31/32 Ground connector on engine (power ground) .
31/33 Ground connector on engine (signal ground) .
31/34 Ground connector tailgate connector.
31/35 Ground connector, antenna.
31/42 Ground connector rail via door switch, left front.
31/56 Ground connector gear selector sensor.
31/64 Ground connector engine cooling fan.
C1 Connector 53-pin Instrument panel harness – Door sill harness .
C2 Connector 53-pin Instr. panel harness – Left wheel housing harness .
C3 Connector 53-pin Instr. panel harness – Right wheel housing harness.
C5 Connector left A-post, 2-pin .
C6 Connector at relay unit, 4-pin.
C7 Connector at steering column, 8-pin.
C8 Connector 4-pin (accessories) .
C9 Connector at centre console 24-pin.
?12 Connector at relay unit, 2-pin.
C13 Connector at relay unit, 4-pin.
?14 Connector at relay unit, 2-pin.
C15 Connector at transmission, 4-pin.
C20 Connector under gear lever carrier, 2-pin.
C21 Connector left B-post, 4-pin.
C22 Connector at trunk, 6-pin.
C23 Connector at tailgate, 2-pin (5-door) .
C25 Connector trunk, 2-pin.
C27 Connector trunk, 1-pin.
C31 Connector at passenger seat, 2-pin.
C32 Connector at driver’s seat, 2-pin.
C33 Connector under driver’s seat, 2-pin.
C34 Connector under passenger’s seat, 2-pin.
C36 Connector under passenger’s seat, 2-pin.
C37 Connector under driver’s seat, 2-pin.
C39 Connector at driver’s seat, 4-pin.
C40 Connector at passenger’s seat, 4-pin.
C41 Connector under driver’s seat, 6-pin.
C42 Connector under driver’s seat, 2-pin.
C50 Connector 8-pin Left wheel housing harness – Engine wiring harness .
C51 Connector 8-pin Left wheel housing harness – Engine wiring harness .
C54 Connector 8-pin Right wheel housing harness – Engine wiring harness .
C55 Connector 8-pin Right wheel housing harness – Engine wiring harness .
C57 Connector at right suspension tower, 3-pin .
C61 Connector at right A-post, 8-pin .
C63 Connector at left headlight, 3-pin .
C64 Connector at right headlight, 3-pin .
C71 Connector 3-pin Left wheel housing harness – Engine wiring harness .
C72 Connector driver’s door, 2-pin.
C73 Connector passenger’s door, 2-pin.
C74 Connector rear door, driver’s side, 2-pin .
C75 Connector rear door, passenger’s side, 2-pin .
C79 Connector driver’s door, 4-pin .
C91 Connector at relay unit, 2-pin.
C93 Connector left rear wheel housing, 4-pin .
C98 Connector at power antenna, 4-pin .
?102 Connector at relay unit, 2-pin .
?105 Connector for bridge coupling, 2-pin .
C111 Connector to temperature sensor, 2-pin .
C121 Coupling reel, steering wheel, SRS .
C122 Connector at trunk/tailgate, 2-pin .
? 123 Connector for bridge coupling, 2-pin .
C124 Connector at left wheel housing, 2-pin .
C128 Connector at AW30-40/43, 8-pin .
C129 Connector at AW30-40/43, 8-pin .
C130 Connector at AW30-40/43, 4-pin .
C131 Connector at left suspension tower, 53-pin .
C132 Connector 8-pin Left wheel housing harness – Engine wiring harness .
C134 Connector at left engine anchorage, 1-pin .
C139 Connector at gear selector, 4-pin .
? 143 Connector at A-post passenger’s side, 24-pin .
C144 Connector at A-post driver’s side, 24-pin .
? 145 Connector, 8-pin Left wheel housing harness – Engine wiring harness .
C149 Connector at B-post passenger’s side, 11-pin .
C150 Connector at B-post driver’s side, 11-pin .
C151 Connector at relay unit, 2-pin.
D2 Connector alarm, 8-pin at steering column.
D3 Connector alarm, 4-pin at steering column.
D4 Connector alarm, 2-pin in engine compartment, left front.
D5 Connector towing hook, 10-pin (not USA/CDN) .
D6 Connector ambient temperature sensor, 2-pin ahead of left front wheel .
D7 Connector ambient temperature sensor, 6-pin.