Left brake light not working
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Mountain Pass
Joined: Nov 2004
Posts: 242
Likes: 54
From: Central Texas
Left brake light not working
My left brake light quit working yesterday. The right one works fine and the running lights on both sides work. Anyone have a suggestion on what to check first? I went ahead and replaced the bulb just to make sure it was good but no luck.
Thanks
wtx66f100
Thanks
wtx66f100
Cargo Master
Joined: Mar 2014
Posts: 2,031
Likes: 72
They joys of wiring in these older vehicles. Since one brake light works, that pretty much eliminates the switch. I would be starting at the tail light and checking connections back from there.
Has your wiring been cut into a bunch, say for trailer lights, etc. If so, I would eye those areas closely.
Also you might want to print out a copy of the wiring diagram and kind of follow the path of the correct circuit/wire.
Ford Truck Technical Drawings and Schematics - Section H - Wiring Diagrams
These diagrams have consumed much of my attention where troubleshooting wiring issues.
Has your wiring been cut into a bunch, say for trailer lights, etc. If so, I would eye those areas closely.
Also you might want to print out a copy of the wiring diagram and kind of follow the path of the correct circuit/wire.
Ford Truck Technical Drawings and Schematics - Section H - Wiring Diagrams
These diagrams have consumed much of my attention where troubleshooting wiring issues.
Thread Starter
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Mountain Pass
Joined: Nov 2004
Posts: 242
Likes: 54
From: Central Texas
Appreciate the help. Right after I posted the question I went out and started at the wiring and just like you suggested there is a trailer wiring harness spliced in and the problem was a bad connection. Fixed the splice and things are good.
Thanks
wtx66f100
Thanks
wtx66f100
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