So here is my issue- would love some advice.

When I use my right tail light, my radio cuts out. When I press the brake, the radio cuts out for a brief moment, then seems to amplify while I press the brake. When I let off the brake, the radio cuts out for a brief second again.

When I use my right blinker, the radio cuts in and out in accordance with the blinker.

I have checked the light bulbs, they are fine. I have switch around the tail lights to double check those were good, and when they were switched around in the garage, the problem persisted on the right rear side.

I can not figure out where the tail lights are grounded to check that ground.

I am too much of a novice to know if this is a radio problem or a tail light problem. I would guess a bad ground within the lighting circuit.

I have checked the fuse as well.



Does anyone have any ideas? Does anyone know where the tail lights on 2017 JKU are grounded?

 

You prolly have a bad ground on the pigtail for the hard top power. Back drivers side. I assume you have a hardtop. The radios go into a low power mode when the hard top is removed. It can be defeated by putting a fuse in the black ground plug and the one next to it using a fuse. It sounds like your issue is related to those wires which for some reason affect the radio. That is where i would look. Again i am assuming you have a hard top and radio with amp and sub.