You might check the relay that switches between the jeep and the RV. I think they are located in the area of the taillights. Maybe swap the left and right relay??Bad wire on flat tow harness. After months of no problems, my left blinker stopped working when connected to the tow harness and RV. I've verified power from RV to my blue ox connector which is spliced into the original RV side of the tow harness. At the fuse connector junction box, I no longer have power on the red left blinker wire. Is there anyway to remove the wires from the jeep side connector piece or from the fuse junction box. I have no good way of testing the wire individually other than direct power on the connector pin does not show up on the fuse box side.