brodo

Hey everyone I hit the ditch and lost my right taillight in the process, I got a new assembly with new bulbs and a new wiring harness. The taillight and reverse features work however I do not have a brake light on the newly replaced side, leading me to believe it's a ground issue The 3rd brake light also does not light. I've even put in new fuses in my trials and electrical is not my expertise so if anyone knows where I can find the ground or possibly has any better ideas TIA