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Old 07-11-2019, 07:09 AM   #3
Dornon13
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Join Date: Oct 2018
Location: TULLAHOMA TN
Posts: 9
Re: Strange brake light issue

I am using a volt meter. I am using the same ground to measure the voltage and try to light the bulb. The technique has worked for other lights in the truck.

The light tests fine and comes on if I use a dedicated battery or if I use a different circuit in the truck ( front signals). Also the light works with the turn signal on as I mentioned and doesn't even use the ground. Then when I touch the ground to it, lights up brighter. I should note the brake switch is removed from it's bracket so it stays on.

I have tried to eliminate as many variables as possible by removing the housing from the equation. I am pressing the bulb against the 2 pin spring contact and using a bare wire to ground the side of the bulb directly to the battery negative.

The light should come on, I really don't understand. Lol
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