Where is the ground for the rear tail lights/signals?

[blizz]

Passenger. Two weeks ago it was the drivers side.

 

[SunlitComet]

they both use the same ground point but are splice together first. Maybe check the splice for integrity. It should be within about a foot of the connector harness for those rear lights. and if not done already inspect all the wiring and plugs in that are for damage, evidence of previous repair or modification work.

 

[blizz]

It's odd. I'll fix one side and the other will go out. I've got 5 or 6 of those circuit boards layin around so I'll replace one and it'll work for a bit then the other side will flake out.

 

[blizz]

It was the boards. Again.