The rear door wiring assembly is an electrical set of wires that transmits signal and electrical power to the rear left and right doors of your vehicle. This consists of wires, connectors and relay which is responsible for the electrical function of the door including the power windows, locks and speakers. Overtime, door cables will wear due to everyday use of back passengers or regularly opening and closing the door. If your rear door power windows, locks or speakers aren't working or it is intermittently not working there might be a problem with your door wiring harness. Compatible with the Following Vehicles: 2004-2008 Ram 1500 2004-2009 Ram 2500 2004-2010 Ram 3500 2008-2010 Ram 4500 2008-2010 Ram 5500 Replacement part number: 56051694AA, 56051931AA, 56051931AB, 645-506 This is a compatible replacement part manufactured by AA Ignition. This rear door wiring harness is NOT a genuine OEM part. Brand names and their associated vehicle models and part numbers are used in this listing only to identify the vehicles this wiring harness assembly fits.