3rd brake light

Hello, strange concern, is there a trailer hitch and wiring harness on this Jeep, perhaps? Is the third brake light LED or plain bulbs? I'd probably be inspecting the circuit for power and ground and see what happens at the sockets if conventional bulbs when the brake pedal is applied. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops