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Trailer Wiring Harness Installation - 2013 Hyundai Santa Fe

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How to Install a Trailer Wiring Harness on a 2013 Hyundai Santa Fe


Today on our 2013 Hyundai Santa Fe, we'll be installing the Tow Ready, T-One Vehicle Wiring Harness, Part Number 118571. First, we'll open up the rear cargo door then we'll remove the two fasteners securing driver's side tail light housing. Next, we'll go ahead and remove the tail light housing by pulling backward towards the rear of the vehicle, popping it free from its alignment pins and fasteners underneath then we'll go ahead and press in the locking tab for the connector and remove the wiring from the tail light assembly. Next, we'll remove the rear bumper cover fastener securing here underneath the tail light assembly. We'll remove this so that we can pull out on it giving us more access to feeding our wires from underneath up into the tail light assembly area. Now, we have the driver's side tail light assembly remove, we'll go ahead and repeat the same process in the passenger side.

Next because the converter box will be hidden behind the bumper cover, we're going to go ahead and attach the long length of black wire which will be our power wire up to the battery from the converter box. So we'll take the short black wire from the converter box using the yellow butt connector securing to the power wire and then strip back the end of our power wire to the battery, attach it to the butt connector securing the long length of wire to the short power wire that goes to the converter box, this will be black to black. Note: At this time, I'll go ahead and wrap up this connection point with some black electrical tape just to keep dirt, dust and debris, and moisture, meandering the connection point. Next, we'll get underneath the vehicle. Now, remove the underbody trim panels.

There's one on each side. Here on the driver's side, they'll be four fasteners that we need to be removed and on the passenger's side, they'll be three fasteners. These are the push fasteners, so we'll screw the centers out and then remove the entire fastener. Now, we can go ahead and pop the underbody trim panel free and set it aside for installation later. Now, we'll go ahead and take a piece of air tubing or a piece of wire, or a pole wire feed it down from the tail light assembly underneath the vehicle.

Here, we can take the yellow and brown wire connector using some black electrical tape and attach it to the pole wire then we'll pull it up behind the tail light assembly. Now, with our wire behind the tail light assembly, we'll go ahead and remove the pole wire and connect the yellow and brown wire to the manufacturer's wiring -- the other end, plugging in the back of the tail light assembly. Note: Don't forget to reinstall the fastener for the bumper cover. Now, we'll go ahead and reinstall the driver's side tail light assembly. Next, we'll get back underneath the vehicle and take the white wire from our converter box with a pre-attached ring terminal and secure it to the body or frame of the vehicle.

Using a self-tapping screw, we can secure here directly underneath the tail light assembly, near the rear bumper. We can then go ahead and secure it underneath using the zip tie provided with the install kit. Now with that done, we'll go ahead and start routing the red and green wire connector over to the passenger side. We'll feed it up behind the bumper frame and over to the passenger side then use our pole wire once again to feed up behind the passenger side tail light assembly. Next, we'll take our 4-pole wire, following the same route and feed it over to the center of the hitch. Once again, we'll use our zip tie to secure it in place. Now, we'll go ahead and cut off the excess from the zip ties to clean up our install look. Our next step, we'll be routing our power wire to the engine compartment. Remember when routing your wires, just stay away from excessive heat such as the exhaust or moving components such as steering or suspension. As we go over the rear suspension, we'll be using the quarter inch metal loom clamp, Part Number A0250 and a self-tapping screw. Once again, we'll use our black zip ties to secure our wiring as we go. Now, once we've got it up to the bottom of the engine compartment, we'll use our pole wire, feed it up through the engine compartment, attach our power wire and pull it into position, at the top of the engine bay. Now, we're done underneath. We'll go ahead and cut off any excess from the zip ties to clean up our install look. At this time, we can also reinstall the underbody trim panel. Now with our vehicle lowered, we'll go ahead and reinstall the passenger tail light assembly. We'll go ahead and plug it in to the tail light assembly and then reinstall it. With that done, we'll go ahead and close the rear cargo door. Moving to the engine bay, we'll take our power wire and secure it to the manufacturer's wiring using the zip tie provided with our install kit then we'll route it over to the positive battery terminal. Next, we'll go ahead and cut off any excess from our power wire as we'll need to install an in-line fuse holder. We'll go ahead and cut off the excess and strip back the wire. Then we'll go ahead and prepare our fuse holder, by cutting in half, stripping back both ends, adding a butt connector and then a ring terminal. Now, we'll take the butt connector and add it to the power wire and secure it. Once again, we'll go ahead and wrap up this connection with some black electrical tape. Now with that done, we'll go ahead and take the ring terminal, feed it through the positive battery terminal cover and up to the positive battery terminal post. Here, we can go ahead and remove the nut, add the ring terminal and then re-secure the nut. We'll go ahead and close the cover and then we can add our fuse to the fuse holder. Once we install the cap on to the fuse holder, this will complete the install of our Tow Ready, T-One Vehicle Wiring Harness, Part Number 118571 on our 2013 Hyundai Santa Fe.


Info for this part was:

Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Nicholas E
Test Fit:
Nicholas E
Employee David F
Test Fit:
David F
Employee Chris R
Video by:
Chris R

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