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 β 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 | |
Β
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 |
Β
Porsche 924 β fuse box diagram β 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 | β | β |
| 8 | β | β |
| 9 | β | β |
| 10 | 25 | Cooling Fan No.2 |
| 11 | 15 | Cigar Lighter, Hatchback Release, Clock, Fuel Gauge, Glove Box Interior Lights |
| 12 | β | β |
| 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 | β | β |
| 27 | β | β |
| 28 | 25 | Back-Up Light |
| 29 | β | β |
| 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 | β | β |
| 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 | β | |
| D | β | |
| E | β | |
| F | β | |
| G | Foglight | |
| H | Foglight | |
| I | β | |
| 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.