driver side tail light dimmer than pass side?

[resq302]

Ok, I just noticed something very weird with our 69 GTX vert.  I thought it was only with our 70 challenger convertible but obviously that is not the case.  The problem is that the driver side tail light is dimmer than what the pass. side is.   Both vehicles have the correct bulbs in place.  All of the grounds are nice and clean where they make contact and the only thing I can think of is that inside reflective housing is not as bright or clean as the pass side. 

My charger does not seem to exhibit this problem.  Is it just our cars or has anyone else noticed this issue with Mopars?

[GreenMachine]

Take a jumper wire and clip both taillight housings together, that way you know FOR SURE they have the same ground. If they are still different then a bad ground isn't your problem.

[resq302]

Great idea!