Fuse for Headlight J3600

Area for General NON-Jeep related chat. Topics are typically not moderated, but must fall within the Use Guidelines.
Post Reply

Topic author
bernie loeffler
Posts: 9
Joined: Fri May 27, 2016 10:30 pm

Fuse for Headlight J3600

Post by bernie loeffler »

Does anyone know where the fuse for the headlights might be on a 1970 J3600?
Thanks
Bernie
User avatar

Yeller
Posts: 1521
Joined: Thu Apr 01, 2021 7:54 am
Location: Rogers County Oklahoma

Re: Fuse for Headlight J3600

Post by Yeller »

No fuse box, all inline fuses. Sure the dimmer switch and headlight switch work? Those are the big culprits to dysfunctional head lights, especially the dimmer switch.
The bus I ride is so short it is a yellow Smart Car full of squirrels, monkeys and clowns.

1970 J2500 Resto Mod
https://www.fsjnetwork.com/forum/viewt ... 12&t=21395

1974 Bronco “Broncno”
https://classicbroncos.com/forums/threa ... st-3411909
User avatar

tgreese
Posts: 7118
Joined: Fri Jun 08, 2012 6:31 am
Location: Medford MA USA

Re: Fuse for Headlight J3600

Post by tgreese »

I'm told there is a circuit breaker in the headlight switch. No fuse for the lights. No fuse panel. Agree, the dimmer switch is a common failure. Trace the wiring with your multimeter.
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS/PDB, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination A/Ts, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
Dual Everything: '15 Chryco Jeep Cherokee KL Trailhawk, ECO Green
Blockchain the vote.

letank
Posts: 4009
Joined: Wed Oct 03, 2012 9:16 pm
Location: SF bay area

Re: Fuse for Headlight J3600

Post by letank »

same switch from 63 forward until 78, with small changes from 79 till 85, with circuit breaker that fails after a while, the switch will get warm, warmer, really warm... then off

https://www.bjsoffroad.com/Headlamp-Swi ... p_439.html
Michel
74 wag (349 Kmiles... parked, next step is a rust free body)
85 Gwag (229 Kmiles... the running test lab)

Herk
Posts: 274
Joined: Mon Mar 25, 2013 8:14 pm
Location: Boise

Re: Fuse for Headlight J3600

Post by Herk »

Switch is a standard General Motors part which contains a self-resetting thermal circuit breaker. The idea was that should there be a short in the headlight wiring, the lights would go out, but come back on automatically. This was viewed as a safety feature and most cars still use circuit breakers to protect the main lighting circuits. The problem with a fuse is, once it's gone, it's gone and you're in the dark.

If you have no power to the lights, look at the dimmer switch and main light switch as suggested. If you have never replaced a headlight switch, there is a button on the bottom that releases the knob, then the bezel nut.

Topic author
bernie loeffler
Posts: 9
Joined: Fri May 27, 2016 10:30 pm

Re: Fuse for Headlight J3600

Post by bernie loeffler »

Thanks All,
I already put in a new light switch, and you're right, the old one was very hot. I tested all the lights, and the wiring for continuity. When I tested the Dimmer switch, the wires leading to the switch were OK and the dimmer switch failed. I put in a new switch and the lights work. Thanks!!
Post Reply