2012 Jeep Liberty Trailer Wiring | etrailer Call 800-298-8924 to get Expert Service ordering a Trailer Wiring for your 2012 Jeep Liberty. Complete installation instructions and lifetime technical support on all Trailer Wiring purchases. Lowest price guarantee on accessories for your Jeep Liberty and the fastest shipping available. 2012 Jeep Liberty Hitch Wiring | Harnesses, Adapters Jeep Liberty 2012, Plug-In Simple!® Towing Wiring Harness with 4-Flat Connector by Hopkins®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers..