Jeep Liberty Trailer Wiring | etrailer Guaranteed fit Jeep Liberty Trailer Wiring. Lowest price guaranteed. Thousands of customer trailer wiring reviews, expert tips and recommendation. Lowest price guaranteed, easy online ordering at etrailer or call 800-298-8924. Jeep Liberty Vehicle Tow Bar Wiring | etrailer Jeep Liberty Tow Bar Wiring Questions and Answers. Recommended Taillight Wiring Harness for Flat Towing 2012 Jeep Liberty Behind Motorhome; The Hopkins # HM56204 is a plug-and-play wiring harness that contain diodes to prevent feedback into the tow vehicle's wiring system. The harness would use the taillights of your Liberty like a combined system.