I've determined that the two outermost rear clearance lights have a bad ground, but I think taking down the rear cap headliner may lead to a shattered piece made of unobtainium. Has anyone come up with a way of re-running a ground wire that doesn't require tearing up the inside? I've thought about ganging it to an adjacent lights ground or dropping a ground wire straight down until I found a place to connect it. Any better ideas?

There is a harness that runs to all the clearance lights in both the front
and rear caps. There are plugs at each clearance light. Just remove the
adjacent lights to the ones with the problems, and splice to their grounds.
No drama.
Jim Hupy
Salem, Or
78 GMC ROYALE 403

On Apr 4, 2017 11:35 AM, "Jon Roche" wrote:

> You can usually fish a wire down to tail lights from outer markers.
> Getting wires to the center lights may need inner cap removal.
>
>
> --
> Jon Roche
> 75 palm beach
> St. Cloud, MN
> http://lqqkatjon.blogspot.com/
>
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No place on plastic. If you are working on the front end, remove the
speaker/courtesy light grill, and probe for ground on that harness. In the
back, there is a master ground near the driver's side tail/stop/back up
light assembly that you MIGHT be able to fish to, by removing the light
assembly. What I would try. Might be a ground in the rear speaker grill if
it is an early coach. That is a bit closer to the rear clearance lights.
Jim Hupy

On Apr 5, 2017 11:42 AM, "Randy" wrote:

> So the adjacent light ground trick didn't really work due to a poor ground
> there too. The bulbs are much brighter with 12v going through them! I'll
> have to find a decent ground somewhere.
>
> Jim, how did you ground from outside the vehicle?
> --
> Randy
> 1973 26' Painted Desert
> Ahwatukee (Phoenix) AZ
>
>
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Yeah, removing the rear light might make it much easier. Thanks!

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You should be able to ground to anything metal, fish a wire down or even ground it to the body somewhere.