All driver side lights dimmer than passenger side !?!?

[Racer57]

Except for my headlights which have the relay setup,,,,,,,,,,,, my brake, turn and clearance lights are slighty dimmer on the driver side. I'm assuming its an grounding issue but where is the ground that effects all of these on one side ? 

[Rich G]

I believe everything gounds through the body on the light housings. You can run a wire from a know good ground to the light housing and see if it gets brighter then you know it's a ground issue. I had to run a wire from the marker light housing to the tail light housing to get them to work. To much paint I guess but they work now.

[tman]

Question is: Did this occur after installing the relay kit or was it that way before?

[Chryco Psycho]

firewall grounds good ?
there is no separate wire to the left & right park lights or rear park lights so they all have to be getting the same voltage . but alal the grounds bad on the left side