[misterdf]

Hi all:
My Tundra has the factory trailer package with the seven pin wiring connector. My new trailer is equipped with disk brakes and a hydraulic "surge" system. The wiring harness on the trailer has a 5 pin connector. The 5th pin is the for the "free backing" solenoid, which disables the surge. I've been told that on most 7 pin connectors, the center pin is connected to the back up lights. Does anyone know if that's true for the Tundra? I have a 5 pin to 7 pin pigtail that will allow all to work correctly providing the center pin of the Tundra connector is wired to the back up lights. I just can't see where the center wire of the truck connector goes.