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Trailer Wiring Harness for Towed Vehicles Installation - 2003 Jeep Liberty

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How to Install a Trailer Wiring Harness for Towed Vehicles on a 2003 Jeep Liberty


Today on our 2003 Jeep Liberty well be installing the Trailer Mate custom tail light wiring kit, part number TM781104. Our first step will be to remove the drivers side tail light assembly. There are two fasteners securing the taillight assembly so well go ahead and remove those and sit them aside. Then well gently pry the tail light assembly free from the body of the vehicle being careful not to break the alignment tabs underneath. Next well go ahead and unlock the red locking tab and then press on the connector lock and remove the manufacturers wiring from the tail light assembly. Now we can take the Trailer Mate wiring and plug in line with the manufacturers.

Well go ahead and take the matching plugs and make our connections with the manufacturers wire and then into the back of the tail light assembly making sure you re-lock the red locking tabs. Next well take the passenger side connectors and wiring and feed it down between the bumper fuchsia and the body, or sheet metal, of the vehicle. Pulling any extra wire underneath. Now well take the four pole wire and go ahead and feed it underneath the vehicle in the same way. Next well take the white wire with the pre-attached ring terminal, this will be the ground wire, and attach it to the body of the vehicle using the self-tapping screw provided with our install kit.

Now with our wires fed underneath well go ahead and reinstall the drivers side tail light assembly. Next well go ahead and remove the passenger side tail light assembly, again removing the two fasteners and prying the tail light assembly free. Well go ahead and unlock the red locking tab, pressing the connector lock and remove the assembly and sit it aside. Next well get underneath the vehicle and start routing our wires over to the passenger side. Using the black zip ties supplied in our install kit to secure our wiring.

Now with the wires routed over to the passenger side well go ahead and feed it up from underneath behind the passenger side tail light assembly. Now with our wires fed up behind the passenger side tail light assembly well go ahead and take one of the black zip ties and secure the Trailer Mate wiring to the manufacturers wiring. Now we can go ahead and make connection with the manufacturers wiring and then plug into the back of the tail light assembly. As you can see on the passenger side here the manufacturers wire connector is broken so well go ahead and use another one of our zip ties to secure the wiring to the tail light assembly. Well cut off the excess from our zip tie and then reinstall the tail light assembly.

Now were ready to go ahead and route the four pole wire to the front of the vehicle. Keep in mind when routing your wires stay away from excessive heat such as exhaust or moving components such as steering and suspension. Here in the front where we dont have access to secure the wiring with zip ties well use several half inch metal loom clamp, part number A0500, and self-tapping screws. Next well go ahead and remove a couple of the manufacturers fasteners so to make it easier to route and secure our wiring here at the front of the vehicle. As you can see we have some extra wire so well go ahead and secure it with some black zip ties here to the sub-frame of the vehicle. Now well go ahead and reinstall the manufacturers fasteners and thatll complete the installation of our Trailer Mate custom tail light wiring kit, part number TM781104, on our 2003 Jeep Liberty.







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