Jonathan Yarden Oct 06, 2021 · 5 min. read
In this article you will find a description of fuses and relays Porsche,
with photos of block diagrams and their locations.
Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.
Year of production: 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991
Type 1
No. | A | Circuits |
1 | 8 | Headlight Low Beam (Left) |
2 | 8 | Headlight Low Beam (Right) |
3 | 8 | Headlight High Beam (Left) |
4 | 8 | Headlight High Beam (Right) |
5 | 16 | Additional High Beams |
6 | 8 | Stoplights, Emergency Flasher, Concealed Headlight Motor |
7 | 8 | Clock, Interior Light, Cigar Lighter, Radio, Trunk Light |
8 | 8 | Turn Indicators, Brake Warning Light |
8 | Stoplights | |
9 | 8 | Back-Up Lights, Rear Wiper, Outside Mirror Motor, Turn Signal Indicator Lights |
10 | 16 | Fresh Air Fan |
16 | Outside Mirror Heating, Control Wire For Rear Window Defogger | |
11 | 8 | Windshield Wipers, Washer Pump |
12 | 8 | License Plate Lights, Luggage Compartment Light, Ashtray Light, Instrument and Switch Lights, Glove Box Light |
13 | 8 | Side Marker (Right) |
14 | 8 | Side Marker (Left), Engine Compartment Light |
15 | 16 | Foglights |
8 | Front Fog Light | |
1 | 8 | Retractable Headlights |
16 | Concealed Headlight Motor | |
8 | Horn | |
2 | 16 | Fuel Pump, Auxiliary Air Valve, Control Pressure Regulator, Frequency Valve (Oxygen Sensor) |
3 | 16 | Radiator Fan, Antenna |
16 | Blower Motor | |
4 | 25 | Rear Window Defogger |
5 | 16 | A/C Condenser Fan |
6 | 25 | A/C Compressor, Fresh Air Fan |
7 | 8 | Rear Fog Light |
8 | 25 | Power Windows |
16 | Power Windows | |
9 | 25 | Pop-Up Roof, Tailgate Unlock Motor |
25 | Blower, Tailgate Unlock Motor | |
Relay | ||
R1 | Bridge (term. 56 – 56b) | |
Headlight Flasher and Low Beam | ||
R2 | Additional High Beams | |
R3 | Horn | |
Blower | ||
R4 | Intermittent Wiper | |
R5 | Turn Signals/Emergency Flasher | |
R6 | Cooling Fan | |
Horn | ||
R7 | Fuel Pump | |
Headlight Washer System | ||
R8 | Air Conditioning System (Blower) | |
Foglights | ||
R9 | Headlight Washer System | |
R10 | Warning Time with Gong (USA) | |
Catalytic Converter Monitoring Control (Japan) | ||
Seat Belt Warning | ||
R11 | Rear Window Defogger and Seat Belts |
Models with an air conditioner have two additional relays underneath the instrument panel next to the center console.
No. | Relay |
1 | Blower |
2 | Air Conditioning System |
Porsche 924 – fuse box diagram – additional relays
No. | Relay |
1 | Radio |
2 | Power Window |
Type 2
No. | A | Protected Component |
1 | 25 | Prop-Up Roof, Hatchback Release |
2 | 25 | Headlight Motor |
3 | 15 | Horns |
4 | 30 | Power Windows |
5 | 15 | Foglights |
6 | 30 | Seat Adjustment |
7 | — | — |
8 | — | — |
9 | — | — |
10 | 25 | Cooling Fan No.2 |
11 | 15 | Cigar Lighter, Hatchback Release, Clock, Fuel Gauge, Glove Box Interior Lights |
12 | — | — |
13 | 30 | Rear Defogger, Heated Mirror |
14 | 30 | Air Fan |
15 | 25 | Cooling Fan No.2 |
16 | 15 | Headlight Motor |
17 | 7,5 | Heating, A/C Compressor Clutch |
18 | 7,5 | Instruments, Roof Control, Hall Pick-Up, Gong |
19 | 15 | Stoplight, Cruise Control |
20 | 7,5 | High Beam (Left) |
21 | 7,5 | High Beam (Right) |
22 | 7,5 | Low Beam (Left) |
23 | 7,5 | Low Beam (Right) |
24 | 30 | Wiper, Heated Wiper Nozzles, Windshield & Headlight, Washer Pump |
25 | 25 | Seat Heating |
26 | — | — |
27 | — | — |
28 | 25 | Back-Up Light |
29 | — | — |
30 | 7,5 | Left Rear Turn Signal & Side Light |
31 | 7,5 | Left Front Turn Signal |
32 | 7,5 | Right Front Turn Signal |
33 | 7,5 | Right Rear Turn Signal & Side Light |
34 | 15 | Fuel Pump, Oxygen Sensor |
35 | — | — |
36 | 7,5 | Radio |
37 | 7,5 | Headlight Motor |
38 | 7,5 | Instrument Illumination |
39 | 7,5 | Radio |
40 | 7,5 | Left Parking & Right License Plate Light |
41 | 7,5 | Right Parking & Left License Plate Light, Engine Compartment Light |
Relay | ||
A | A/C Compressor | |
B | Prop-Up Roof | |
C | — | |
D | — | |
E | — | |
F | — | |
G | Foglight | |
H | Foglight | |
I | — | |
J | Retainer X | |
K | Headlight Washing System | |
L | Gong, Catalytic Converter | |
M | Bridges | |
N | Power Window | |
O | Buzzer | |
P | Intermittent Wipers | |
Q | Cooling Fan | |
R | Air Fan | |
S | Retainer 15 | |
T | Rear Window & Fuse Test Receptacle | |
U | Turn Signal Flasher | |
V | DME |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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