Thank you for responding so quickly!
I have the 4 pin trailer plug as well, i was actually referring to the taillight brake splice connector (three pin) wereas the spice connector has 6. I was assuming in order to get brake lights I would need to get at that harness. Is the brake signal on the turn indicator harness (lower plug?). I haven't been able to get at the yet.
Any advise on getting those panels in the rear off? I removed the two trim plugs from the lift gate bottom but it isn't obvious on how to get started pulling that off.