1974-1978 Ford Mustang Fuse Box Diagram
| No. | A | Description |
|---|---|---|
| 1 | 4 | '74-'75: Cluster, heater or air conditioner control, radio, ash tray, and clock lights '76-'78: Instrument panel lamps |
| 2 | 7.5 | Oil, brakes, belts indicator lights, seat belt module, buzzer, throttle solenoid positioner, emission control solenoid ('76-'78) |
| 3 | 6 | Circuit breaker: Windshield wiper motor |
| 4 | 15 | Windshield washer pump, door ajar, park brake ('74-'75), headlight indicator lights ('74-'75), heater backlite control indicator light, anti-theft module, fuel monitor indicating lamp ('76-'78) |
| 5 | 7.5 | Radio/tape player |
| 6 | 20 | Horn, cigar lighter |
| 7 | 15 | Dome light, glove box, map, trunk, door, instrument panel, courtesy, headlights indicator lights. Key, headlight warning buzzer, clock feed, anti-theft trigger, horn feed and seat belt module |
| 8 | 15 | Stop and emergency warning lights |
| 9 | 15 | Heater |
| 30 | '74-'77: Air conditioner | |
| 35 | '78: Air conditioner | |
| 11 | 15 | '74-'75: Back-up lights '76-'78: Back-up lamps and turn signal lamp |
Circuit Breakers
| No. | Description | A | Location |
|---|---|---|---|
| 1 | '74-'76: Headlight circuit and high beam indicator light ('76-'78) | 18 | Circuit breaker intergral with headlight switch |
| 2 | '74-'75: Marker, license, tail lights, shift quadrant indicator light and headlights "ON" warning relay '76-'78: Tail, park, license plate, side marker and automatic shift indicator lamps |
15 | Circuit breaker integral with headlight switch |