2007 Toyota Tundra Trailer Wire Harness and Connector Equip cars, trucks & SUVs with 2007 Toyota Tundra Trailer Wire Harness and Connector from AutoZone. Get Yours Today! We have the best products at the right price. 2007 Toyota Tundra Hitch Wiring | Harnesses, Adapters Toyota Tundra 2007, Towing Wiring Harness by CURT®. This provides all you need to connect a trailer to the tow vehicle. Generous length allows plenty of wire.