A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. We only sell parts from trusted brands like so that you can find quality parts you can count on. We'll go ahead and loosen up the nut on the positive side of the battery and add the ring terminal on the wiring harness in-line. Full transcript: Today on our 2001 Toy0ta Tundra, we'll be installing the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, part number C55378. This will keep any dirt and debris out of the 4-flat when not in use, as well as securing it to the hitch. Now that that's done, we can go ahead and put our battery clamp back down, holding the battery back in place.
Now for the 4-flat, we'll route it down here to the center of the hitch area. We're going to go ahead and loosen up the bracket that holds the battery in place so we can slide it over enough to give us a little more working room to gain access to the factory plug. We'll then take the end of our new wiring harness and simply plug it into it, again, making sure that the locking tab clicks into place so that the connection is secure. We'll also use a few zip-ties to help secure any excess wiring up here. Once that goes through, we'll take the end cap and put it back over the end of our 4-flat. This custom original equipment vehicle-to-trailer wiring connector provides a 4-way flat connector socket and comes with a circuit-protected converter.
We'll take the ground on the test light and touch the open prong on the 4-flat, which is the white wire, and we'll have someone run through the light functions. Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Trailer Wiring Kit stock in-person! No matter the situation, Advance Auto Parts has the Trailer Wiring Kit product you desperately need. We'll go ahead and use a few zip-ties to secure up any excess wiring. Next we'll need to install the 10 amp fuse that comes with the kit in the fuse holder. This is the wiring that we'll be tying in the new Curt T-Connector wiring harness to. All that's left to do is to to run through and make sure that our new 4-flat wiring is working properly,so we'll take our test light here at the rear of the vehicle.
As you can see here, everything is working just fine. We'll go ahead and use a little bit of rubbing alcohol to clean the surface first, before we attach the 2-sided tape to the box, and then attach the box to the frame of the vehicle. We'll then tighten the nut back down. We'll go ahead and plug in our connection from the new wiring harness to the factory wiring harness, making sure that we hear the locking tab click into place. Now we need to move up to underneath the hood where we'll take the other piece of wiring harness. They come with dust covers to keep your connector clean when not in use and feature a one-year limited warranty to give you peace of mind.
We'll begin here underneath the rear of the vehicle, over here on the drivers side. Again, this plug has a cap built into it already to protect it from dirt and debris. You'll see that there's a large gray plug right here that actually has an end cap in it. To unplug this, we'll simply push in on the locking tab and gently pull downward. We'll simply push in on the locking tab and remove the dust cap.
This will allow us to protect the box, as well as give us a good flat area to secure the box using the 2-sided tape. On top of low prices, Advance Auto Parts offers 3 different trusted brands of Trailer Wiring Kit products for the 2001 Toyota Tundra. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle's electrical system, to readily accept a custom wiring connector. Now for the box and the 4-flat end of the wiring harness, we're going to route it up here through the frame. We'll then take the cover for the 4-flat, put it on the end of the 4-flat, and then loop it through the safety chain hole on the hitch. Or you may just be struggling to keep it highway-approved.
We'll touch the brown wire for the running lights, the yellow wire for the left turn, the green wire for the right turn, and the yellow or the green wire for the brake signal. . With that, that will conclude our installation of the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, part number C55378, on our 2001 Toy0ta Tundra. We'll then put the cap on the fuse holder. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector.
Most vehicles do not come ready to tow. The one that has a fuse holder in it will need to be tied in with the battery. We'll then need to route the other end with the ring terminal up to the positive side of the battery. . . .