Third brake light has no power
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Third brake light has no power
hey guys i have a 1992 f350 4x4 crew cab and my third brake light doesnt work. i replaced the bulb and it still didnt work so i decided to test the terminals with both a 12v tester and a standard voltmeter..nothing. Anyone know what could be causing this ? i have my dome light power wires cut trying to fix an issue with them could that be causing this ?
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i will check that tomorrow part of the reason i havent is cuz i couldnt figure out how to turn it on in the first place lol Thanks
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Joined: Oct 2009
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From: Ohio
If it doesn't come on with turning the dome lights on, and the bulb is good...it's likely a ground issue. Moisture seeps in from around the seal when it cracks and corrodes. I had that happen with my 1989.
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So i tried rotating the **** to the left and it wouldnt roatate at all. With the hesdlight on rotating it to the right dims the dash lights and to the left. Brightens them up
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Fleet Owner
Joined: Oct 2005
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From: Kentucky
I agree with Texasguy, the high mount brake lamp for F-series trucks was not available until 1994. But you do have a wiring issue for the cargo lamp function.
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yea its a cargo light. But ok i figured it was something like that. So when the dome/interior lights are on that should be to ? Makes sence cuz none of my interior lights have worked since i bought the truck... i cut the wires where they come up under the dash to the switch and directly applied 12v to the light and only got a very dim light So i think theres an issue between there and where the lights are
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Downthet
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Mar 9, 2017 09:49 PM