A shot in the dark: Signal and running light

[Darthbaker]

We almost have our 72 K5 ready for the road....

I have located a few lighting issues that i'm going to start troubleshooting tomorrow. I felt it might be best to see what everyone thought might be the problem on the located issues and work everyone's else ideas if and when mine run out. lol

Keep in mind this K5 is stock and none of the wiring has been hacked on. So with that being said... everything works as it should except for two small issues.

1. Right rear running taillight won't work. Blinkers and Brake work great.
(I'm thinking a ground and since its a super simple harness if it is a wire I should be able to find it easy).... Might be a possible socket ground issue?

2. Right turn signals will not work, side marker & front. Running lights work fine on the Side marker though. (I'm praying it's a ground issue for the front , but might be in the column turn signal switch for the side marker...)

Any other thoughts or insights would be much appreciated. Yay wiring issues