Ford Mustang (1979 – 1982) – fuse box diagram

Year of production: 1979, 1980, 1981, 1982

Fuse box

Fuse	Ampere Rating [A]	Description
1	5	’79: Not Used ’80-’81: Illumination Lamps, Cluster, Clock, Radio Ash Receptacle, Heater & A/C Controls, PRNDL ’82: Not Used
2	10	Warning Lights, Dual Brake, Oil Pressure, Water Temperature, Seat Belt and Carburetor Throttle Emission Control Solenoid, Carburetor Circuits, Tachometer, Turbo Boost Indicators, Low Fuel Warning
3	—	—
4	20	’79: Not Used ’80-’82: Horn, Cigar Lighter, Clock in Console
5	20	’79: Horn, Cigar Lighter ’80-’82: Not Used
6	20	’79: Not Used ’80-’81: Choke Heater
	5	’82: Instrument Illumination
7	15	Courtesy Lights, Dome, Map, Glove Box, Luggage Compartment, Clock, Radio, Ignition Key Warning Buzzer, Headlight on Warning Buzzer
8	20	’79: Hazard Warning, Stop Light Switch
	15	’80-’82: Exterior Lights, Instrument Illumination
9	—	—
10	15	Radio
11	25	’79: Air Conditioning Clutch, Heated Backlight Relay, Speed Control and Illuminated Entry
	20	’80: Air Conditioning Clutch, Liftgate Wiper Washer, Speed Control, Rear Window de-icer, Trunk Release and Light out Warning ’81-’82: Accessories, Air Conditioning Clutch, Heated Rear Window Relay Coil, Deck Lid Release, Power Window Safety Relay, Speed Control
12	6	Circuit Breaker: Windshield Wiper/Washer System
13	5	’79: Illumination Lamps, Cluster, Clock, Radio Ash Receptacle, Heater & A/C Controls, PRNDL
	20	’80-’81: Stoplamps, Hazard Warning Lamps
	15	’82: Stoplamps, Hazard Warning Lamps, Speed Control
14	30	’79: Heater and Air Conditioning System
	15	’80-’82: Turn Signal and Back-up Lights
15	20	’79: Turn Signal and Back-up Lights
	15	’80-’82: Heater
	30	’80-’82: Air Conditioning System
16	—	—
17	20	’79-’81: Not Used ’82: Circuit Breaker: Power Windows

Circuit Breakers

 

Fuse	Circuit(s) protected	Ampere ratting [A]	Location
1	’79, ’81-’82: Headlight circuit and high beam indicator light	18	Circuit breaker intergral with headlight switch
	’80: Headlight circuit and high beam indicator light	22	Circuit breaker intergral with headlight switch
2	’79: Park, Marker, License and Tail Lights; Transmission Indicator, Headlight on Relay Control	15	Circuit breaker integral with headlight switch
3	’81-’82: Liftgate Wiper and Washer	4,5	On bracket above glove box
4	’81-’82: Power Windows, Door Locks and Seats	20	Attached to starter motor relay

 

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.