I had aftermarket roof marker lights installed last June and have had problems with them staying on. Seems like the ground wire keeps getting loose. Anyone have any suggestions for me? I keep having to take back to the dealer...and just want them to be fixed correctly. Obviously just tightening a screw isn't gonna work.
Thanks,
J9

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Is it the GM roof marker light kit installed by the dealer? If so, those are run by one wiring harness that plugs in underneath the main fuse block next to the battery. it sounds like they may need to make sure it's "clicked" into place good. There isn't much to those lights at all. I'm pretty sure the harness consists of 2 wires.

 

Did the dealer or some other shop put them on? Did they supply them or did you?

 

Ya! HummerMike is right, I installed them on my H3 and its as simply as can be. The fuse box is a 2 level box and they plug in to the bottom level. They make it clear in the instructions to make shore it clicks in tight. This could be the issue!