Join Date: Jun 2008
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rear running light problem
Need some help even after searching for a couple of hours on here..Hooked up to the sandrail trailer and 3 miles into pulling it my truck and trailer right, rear running lights stopped working. Next day I checked all fuses under the hood with volt meter (continuity test) and all are good. So far I:
-Tested right rear bulbs with volt meter and all tested ok but they are blackish?
-Swapped out the working left, rear light assembly (circuit board/3 bulb holder) with right rear assembly but still no luck?
-The truck 7 pin is working as it should. Power, directional, etc...
-The 3057 bulbs have 2 filaments in them and the outer filaments that should light when running lights are on don't. However, they will flash when I set my alarm so the bulbs are physically working?
This truck is a dessert truck and has seen the rain for about a total of 5 hours since I had it. The only thing I can think of checking is the snap connector that plugs into the circuit board for 12 Volts behind the light? I don't expect to find any cut wires but I'll theck? I also have been having a problem with a OD lockout box that I tried to install but it is throwing a code and putting it into limp mode so I hope I don't have an ECM,TPIM issue? Also, this same trailer blue a fuse on my wife's SUV last summer with the same symptoms but I thought I fixed it by replacing a fuse and repairing a broken side marker light on the trailer?? Sorry for the long post and thanks all!
2018 Tradesman 2500 4x4 3.42 gears auto, stock truck