Mbettez
Newbie
So I’ve searched for my specific issue all over the place hoping not to make another “no lights” thread but nobody seems to have had it and electrical troubleshooting is far from one of my best skills.
On my 2000 Chevy c3500 All 3 brake lights, rear signals, rear markers, and plate lights are all out, yet all front lights work just fine, the third cab brake light I can live without for now but everything else is obviously important.
Using a multimeter and test light I’ve verified there’s no power going to the main 4 wire plug that the whole taillight harness plugs into. All my fuses are 100% working, I’ve got power on both sides of every fuse, and I’ve changed them out for new ones just to be sure, and I swapped out the multifunction switch with a known working unit, to me this sounds like a ground issue im just not quite sure where to look, I’ve followed the harness all the way up to just under the under-hood fuse box where there’s another connection but I can’t seem to see where it goes after that.
Ive also got a 99 Yukon backup daily that I can swap parts out to troubleshoot if need be.
On my 2000 Chevy c3500 All 3 brake lights, rear signals, rear markers, and plate lights are all out, yet all front lights work just fine, the third cab brake light I can live without for now but everything else is obviously important.
Using a multimeter and test light I’ve verified there’s no power going to the main 4 wire plug that the whole taillight harness plugs into. All my fuses are 100% working, I’ve got power on both sides of every fuse, and I’ve changed them out for new ones just to be sure, and I swapped out the multifunction switch with a known working unit, to me this sounds like a ground issue im just not quite sure where to look, I’ve followed the harness all the way up to just under the under-hood fuse box where there’s another connection but I can’t seem to see where it goes after that.
Ive also got a 99 Yukon backup daily that I can swap parts out to troubleshoot if need be.