BMW 7 E23 (1977 – 1987) – fuse box diagram
Years: 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987
Fuse Box (up to 1982)
| Fuse | Ampere rating [A] | Description |
| 1 | 15 | Fuel Delivery/Evaporative Control Idle Speed Control |
| 2 | 8 | Headlights (RH Low Beam) |
| 3 | 8 | Headlights (LH Low Beam) |
| 4 | 25 | Cigar Lighters |
| 5 | 8 | Active Check Control Auto-Charging Flashlight Central Locking Gauges Glove Box Light Heated Door Lock Ignition Key Warning/Seatbelt Warning Interior Lights Lights: Turn/Hazard Warning On-Board Computer Radio/Power Antenna Trunk Light |
| 6 | 8 | Active Check Control Backup Lights/Transmission Range Lights Brake Lining Warning Cruise Control Dash Lights Gauges Idle Speed Control Interior Lights Power Mirrors Power Windows Seatbelt Warning Speedometer Warning Indicators |
| 7 | 8 | Headlights (LH, RH High Beams) |
| 8 | 8 | Headlights (LH, RH High Beams) |
| 9 | 8 | Active Check Control Dash Lights Lights: Front Park/Tail/Underhood Lights: Rear Marker/License |
| 10 | 8 | Active Check Control Lights: Front Park/Tail |
| 11 | 16 | Active Check Control Horns Lights: Turn/Hazard Warning Wiper/Washer |
| 12 | 8 | Active Check Control Radio/Power Antenna Stoplights/Cruise Control Warning Indicators |
| 13 | 25 | Rear Defogger/Sunroof |
| 14 | 25 | Automatic Heater-Air Conditioner Auxiliary Fan Vacuum Pump |
| 15 | 8 | Fog Lights (RH) |
| 16 | 8 | Fog Lights (LH) |
| 17 | 25 | Auxiliary Fan |
| Relay | ||
| R1 | Fuel Pump Relay | |
| R2 | Auxiliary Fan Relay (Speed 1) | |
| R3 | Low Beam Check Relay | |
| R4 | Purge Valve Relay | |
| R5 | High Beam Relay | |
| R6 | Horn Relay | |
| R7 | Low Beam Relay | |
| R8 | Fog Light Relay | |
| R9 | Unloader Relay | |
| Ampere ratting [A] | Protected circuits | |
| Auxiliary Fan Fuses(2) | 25 | Auxiliary Fan |
Under Dash, Left Of Console
| Ampere ratting [A] | Protected circuits | |
| Power Window Circuit Breaker | 25 | Power Windows |
| Ampere ratting [A] | Protected circuits | |
| In-Line Radio | 25 | Radio |
Fuse Box (from 1982)
| Fuse | Ampere rating [A] | Description |
| 1 | 15 | Headlights (Left High Beam, Right Low Beam) |
| 2 | 15 | Headlights (Right High Beam, Left Low Beam) |
| 3 | 15 | Auxiliary Fan 91° C (196° F) |
| 4 | 15 | Lights: Turn/Hazard Warning |
| 5 | 30 | Wiper/Washer, Windshield Washer Jet Heaters |
| 6 | 7,5 | Active Check Control, Stop Lights/Cruise Control/Map Light |
| 7 | 15 | Horn |
| 8 | — | — |
| 9 | 15 | Back Up Lights, Fuel Control (Engine Electrical Equipment) |
| 10 | 7,5 | Active Check Control, Brake Lining Warning, On-Board Computer, Seatbelt Warning, Service Interval Indicator, Speedometer/Gauges/Warning Indicators |
| 11 | 15 | Fuel Delivery (Main and Auxiliary Fuel Pump) |
| 12 | 7,5 | Active Check Control, On-Board Computer, Radio (Radio In-Line Fuse), Warning Indicators |
| 13 | 7,5 | Headlights (Left Low Beam) |
| 14 | 7,5 | Headlights (Right Low Beam) |
| 15 | — | — |
| 16 | 30 | Auxiliary Fan, Vacuum Pump, Heater/Air Conditioning |
| 17 | 15 | Heater/Air Conditioning, Interior Lights, Power Mirrors, Power Windows, Seatbelt Warning, Stop Lights/Cruise Control, Windshield Washer Jet Heaters |
| 18 | 30 | Auxiliary fan 99° C (210° F) |
| 19 | 30 | Sunroof, Heated Seats |
| 20 | 30 | Hear Defogger |
| 21 | 7,5 | Active Check Control, Auto-Charging Flashlight, Gauges, Glove Box Light, interior Lights, On-Board Computer, Radio, Service Interval Indicator, Trunk Lights, Seat Belt Buzzer, Memory, Clock |
| 22 | 7,5 | Active Check Control, Lights: Front Park/Tail |
| 23 | 7,5 | Active Check Control, Rear Defogger, Lights: Front Park/Tail Underhood, Lights: Visor/Dash, Lights: Rear Marker, Lights: Turn/Hazard Warning, Engine Compartment Light, License Plate Lights |
| 24 | 15 | Lights: Turn/Hazard Warning, Open Door Buzzer |
| 25 | — | — |
| 26 | 30 | Power Seats, Power Windows |
| 27 | 30 | Central Locking, Heated Door Lock, On-Board Computer, Burglar Alarm |
| 28 | 30 | Cigar Lighter, Power Antenna (Radio In-Line Fuse) |
| 29 | 7,5 | Fog Lights (Left Fog Light) |
| 30 | 7,5 | Fog Lights (Right Fog Light) |
| 32 | 30 | Accessory Fuse (Not Used) |
| 33 | 30 | Accessory Fuse (Not Used) |
| Relay | ||
| R1 | Fuel Pump Relay | |
| R2 | Wiper Control Unit | |
| R3 | Low Beam Check Relay | |
| R4 | Low Beam Relay | |
| R5 | High Beam Relay | |
| R6 | Horn Relay | |
| R7 | Auxiliary Fan Relay (Speed 1) | |
| R8 | Fog Light Relay | |
| R9 | Unloader Relay (Rear Window Defogger, Power Sliding Roof, Heated Seat) | |
| R10 | Auxiliary Fan Relay (Speed 2) | |
| R11 | Unloader Relay (Heater Blower) | |
| R12 | Oxygen Sensor Heater Relay | |
| Ampere ratting [A] | Protected circuits | |
| Power Window Circuit Breaker | 25 | Power Windows |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.