Tail lamp wiring

Working on a 57 Studebaker Commander. I had no left tail lamp. Reworked both tail lamps with new wires plus replaced the crossover wiring. Now the left tail lamp is brighter than the right, with the brakes applied, it reverses to the right side brighter than the left. Any ideas guys?

 

that sounds like a ground problem.

 

Bulb sockets wired backwards,
Crossover crossed
1157 in backwards
Bad ground

 

Try running a designated ground wire from each of your lights to a good known ground as fender bolts are a poor subs***ute.

 

X 2 with Hemi Vicky

 

Guys, I flipped the left tail lamp socket 180 degrees. I now have it all...tail lamps, brake and turn signals. Thx for the feedback.