Brake lights stay on !
 

Hello guys,
I have a 2015 Defender 110, and my brake lights stay on all the time when the night lights are on — and when the night lights are off, the brake lights don’t work at all. I’ve checked the switches and the trailer plug; everything seems fine.
Has anyone ever experienced this issue? Or does anyone have an idea what could be causing the problem?
Thanks for your help.

Bad ground. Tail and brake lights will have a ground source behind the covers on right and left side of rear door. Remove covers and check wiring there.