Reverse lights come on when brake is pressed

Has anybody experienced their reverse lights and backup camera coming on when brake pedal is pressed I recently installed a tuner right before it started happening idk if that has anything to do with it

 

Did the added tuner require a reverse circuit input tap?

 

Remove the tuner and see what happens.

 

Nope just plugged right into the OBDII port

 

I swapped everything back to stock and still happening I’ve unplugged the battery and let it sit for a few hours too

 

Check under the rear bumper, towing harness wires. They might be chaffed.

 

You have a grounding issue. Are both brake lights bright or are they dim or is one bright and the other dim?

 

All bright as if I was in reverse while holding the brakes

 

All wires seem to be okay and in tact no scrapes on wire loom

 

Look inside the towing connector for rust on the pins.

 

Can you pull the camera fuse and see what happens. You have either the reverse circuit or camera circuit grounding when the brake lights come on. You didn't monkey with any wires anywhere else?

 

Camera fuse?

 

Goes with the radio.

 

I haven’t messed with any wires recently and when I do they get tucked away neatly with heat shrink and such. Idk if the fuse would do much as the radio still works perfectly fine if it is on the same fuse but I’ll check in the am

 

Another location the wires might be frayed and touching is at each rear lamp assembly and/or harness.

 

That’s what I’m starting to think it is. It’s no longer doing with my brakes it’s doing it with my left turn signal

 

Do you have an add a fuse installed on that circuit?

I had something similar happen with my windshield wipers because said add a fuse was installed backwards. I used the added fuse for a 12 volt outlet in the back and for some reason the fuse blew on the windshield wipers yet would turn on automagically when something was plugged into my new 12 volt outlet. Smh...

 

A wise old Service Manager once told me, "All stupid / weird electrical problems are a bad ground." He was almost always right.