TJ Taillight problems

[BarrysJeep]

So I am having problems with my drivers side rear taillight. When i turn the key to on, but not started it works fine, stays on, blinks properly, reverse light works,everything. But as soon as i start driving and use my left turn signal the entire light stops working, no brake light, turn signal or reverse. It just shuts off. I've checked the fuses and replaced the bulbs. I am not good at wiring/ electrical so it throws me off. Any idea's?

 

[Jerry Bransford]

Could be the electrical ground connection between the taillight housing and tub provided by its 3 mounting bolts has become intermittent. Remove the red lens cover and work the three hex head bolts inside in/out a few times to clean up the connection and retighten them securely. No guarantees but... Oh this can also be caused by having installed tail light "protectors" which can cause the same grounding issue.