2002 Toyota Tundra Trailer Wiring | etrailer Call 800-298-8924 to get Expert Service ordering a Trailer Wiring for your 2002 Toyota Tundra. Complete installation instructions and lifetime technical support on all Trailer Wiring purchases. Lowest price guarantee on accessories for your Toyota Tundra and the fastest shipping available. etrailer | Trailer Wiring Harness Installation - 2002 Click to view2:34All right today on this 2002 Toyota Tundra were going to install part number 118378 from Tow Ready. All right, the first thing we need to do is go ahead and install a fuse holder by the battery.Author: etrailerViews: 18K Trailer wiring harness issue 2002 Tundra | Toyota Tundra I put a receiver hitch 2002 Tundra limited and purchased a four pin flat wiring harness (part # 08921-34850) from the Toyota dealership. It plugs in right under the bumper, however when I tested it, there was no power. I checked the fuse boxes, but didn’t find anything related to a trailer.. Trailer Wiring Harness Installation - 2002 Toyota Tundra How to Install a Trailer Wiring Harness on a 2002 Toyota Tundra. Today on this 2002 Toyota Tundra we're going to install part number C55378. This is the CURT t-connector wiring harness with the 4-pole flat trailer connector.5/5(44)Category: Custom Fit Vehicle WiringBrand: Curt etrailer | Trailer Wiring Harness Installation - 2002 Click to view4:37Today on this 2002 Toyota Tundra we're going to install part number C55378. This is the CURT t-connector wiring harness with the 4-pole flat trailer connector. Our first stop is underneath the hood.Author: etrailerViews: 8 2002 Toyota Tundra Hitch Wiring | Harnesses, Adapters Toyota Tundra 2002, Professional™ Inline to Trailer Wiring Harness Connector by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for..