Service Procedure

DIRECT TO JUNCTION BOX SERVICE PROCEDURE (SANTA FE OR VERACRUZ):

1. Using a 10 mm socket, remove the negative (-) battery cable and secure it away from the negative battery post.

CAUTION:
Failure to disconnect from the battery may cause damage to the new replacement tow hitch control module.

2. Carefully disconnect the two tow hitch harness connectors located on the driver's side, behind the rear wheel next to the muffler.

IMPORTANT:
If no connector is present skip to the Direct to Battery Service Procedure.

NOTE:
Connections may be separated by pressing on the locking tabs and carefully pulling apart.

3. Carefully cut and remove the 4 cable ties securing the tow hitch harness to the individual anchor points.

NOTE:
Do not remove the anchors.

4. Remove the tow hitch control module and harness by grasping the module by the hand and gently rotating it back and forth until the adhesive separates from the bumper reinforcement.

NOTE:
Removed modules/harnesses MUST be returned to the WTC. Parts return notices will be generated from the WTC for all replaced parts.

NOTE:
DO NOT Damage the module.

NOTE:
DO NOT CUT the attached wire harness or connectors.

5. Completely clean and remove all remaining adhesive tape from the top of the rear bumper reinforcement.

NOTE:
Anchor points - if the tow hitch harness anchor points are still present skip to step 7.

6. Locate the anchor points from step 3. Clean area. Install new anchor points by pressing firmly in position. Using a heat gun, apply heat to each of the anchor points for 5 minutes to cure the adhesive.

NOTE:
The new module can be identified by the external fuse holder.

NOTE:
Anchor orientation

7. Insert matching connectors on the replacement tow hitch harness into the vehicle connectors. Press firmly into place until the locking tabs engage. Secure the tow hitch harness to the anchor points installed in step 6.

8. Route the wiring harness above the exhaust muffler, and bring the tow hitch control module to the center of the bumper.

9. Use one (1) cable tie and cable anchor to support the wire harness.

10. Secure the tow hitch control module above the ledge of the bumper by removing the adhesive backing and pressing firmly.

11. Route the tow hitch harness down along the bumper support bracket and secure into place with cable ties.

12. Remove the dust cover and carefully push the 4-pin flat trailer connector through the connector mounting bracket from under the vehicle until it snaps into place.

13. Reconnect the battery terminal.

DIRECT TO BATTERY SERVICE PROCEDURE (SANTA FE ONLY):

2. Raise the liftgate and remove the wiring harness access cover from the interior trim panel located on the left side of the vehicle.

3. Using a 10 mm socket, remove the three fasteners securing the left tail light assembly to the vehicle. Carefully pull the tail light assembly away from the body and lay the assembly inside the vehicle. Do not allow the assembly to hang.

NOTE:
Repeat steps 2-3 on the right side of the vehicle.

4. Cut the original trailer hitch wiring harness wires 2 inches away from the Scotch Lock.

5. Seal original harness wires by placing one of the short heat shrink tubes over the end of each of the cut wires, total of 4 wires. Pinch ends and heat the shrink tube with a heat gun to seal the tube to the wire. Repeat for all wires cut (Brown, Yellow, Blue w/black stripe, and Green.

NOTE:
The end of the shrink tube extending past the end of the wire should seal flat to keep moisture out.

6. Remove the ring terminal from the heat shield.

7. Cut the red wire towards the battery side near the heat wrap.

CAUTION:
Disconnect battery cable prior to cutting red wire.

8. Remove the tow hitch control module and wiring harness that is attached to the bumper structure by gently rotating back and forth until the adhesive breaks away.

NOTE:
Removed modules/harnesses MUST be returned to the WTC. Parts return notices will be generated from the WTC for all replaced parts.

NOTE:
DO NOT Damage the module.

NOTE:
DO NOT CUT the attached wire harness or connectors.

9. Completely clean and remove all remaining adhesive tape from the top of the rear bumper reinforcement.

10. Secure the tow hitch control module above the ledge of the bumper by removing the adhesive backing and pressing firmly.

NOTE:
The new module can be identified by two (2) white dots as shown in the picture.

11. Connect the power lead to the harness. Strip approximately 0.3 in of the insulation from the end of the red wire cut in Step 7. Insert the stripped wire into the butt connector located on the red power input wire on the trailer harness module. Making sure the wire end is properly seated, make a crimp connection using a tool designed for insulated splices.

CAUTION:
An improper splice will lead to intermittent operation of the harness or potential electrical system damage.

12. Apply heat directly to the splice, working from the center out to the edges, using a hot air gun or other heat source, until the tubing shrinks and the adhesive flows.

13. Position the ring terminal on the tow hitch harness black wire over the heat shield nut that was previously removed in step 6.

14. Using a fish wire, route the brown, yellow & blue/black wire from the control module up from under the body, behind the bumper and into the left (driver's) tail light opening. Route the Green wire from the tow hitch harness module behind the bumper brackets, up through the body and into the right (passenger) tail light opening.

15. Attach the tow hitch wiring harness to the wiring cut in the step 4. Splice the tow hitch harness wires as listed in the chart above, using the grease-filled wire taps provided.

CAUTION:
Using non-grease filled connectors could lead to possible corrosion and light/harness malfunction.

16. To properly secure the wire tap, open the cover completely and lay the original wire completely into the exposed channel. Insert the tow hitch harness wire into the opening up to the stop. With both wires properly positioned inside the wire tap, use a pair of blunt nose pliers to seat the blade and pierce each wire in the wire tap. With the blade secured, close the cover of the wire tap, to lock it into place.

CAUTION:
Failure to properly secure the wire tap will lead to intermittent operation of the harness and potential electrical system damage.

17. Route the tow hitch harness down along the bumper support bracket and secure into place with cable ties.

18. Remove the dust cover and carefully push the 4-pin flat tow hitch connector through the connector mounting bracket from under the vehicle until it snaps into place.

19. Reconnect the battery terminal.