i have an 06 ram and the rear brake lights are not working all the other lights on the truck work even the brake light over the cab, bulbs are good any idea what could be the issue

 

check the brake lights with a multi meter. also if you have spliced anything for a trailer check to see if it damaged the wiring. also under the hood there is a relay. while its probably not the cause it can be.
just a few things to check. good luck
keep us posted.