2012 Jeep Liberty OE Wiring Harnesses & Stereo Adapters Jeep Liberty 2012, Aftermarket Radio Wiring Harness by Metra®, with OEM Plug. For aftermarket stereo. Metra preassembled wiring harnesses can make your car stereo installation seamless, or at least a lot simpler. Jeep Wiring Diagrams - FreeAutoMechanic Wiring Diagrams › Jeep. If you run into an electrical problem with your jeep, you may want to take a moment and check a few things out for yourself. Before you dive in with a multi-meter, you will want to obtain a free wiring diagram for your specific model may need to locate a specific color wire 2002 Jeep Wrangler | Stereo Wiring Diagram March 30th, 2012 Posted in Jeep Wrangler. 2002 Jeep Wrangler Stereo Wiring Information. Radio Constant 12v+ Wire: Pink/White Radio Switched 12v+ Wire: Pink Radio Ground Wire: Chassis The stereo wiring diagram listed above is provided “as is” without any kind of warranty.