2007 Dodge Ram 1500 Trailer Wiring Harness | Advance Auto We currently carry 4 Trailer Wiring Harness products to choose from for your 2007 Dodge Ram 1500, and our inventory prices range from as little as $30 up to $41. On top of low prices, Advance Auto Parts offers 1 different trusted brands of Trailer Wiring Harness products for the 2007 Dodge Ram 1500. 2007 Dodge Ram OE Wiring Harnesses & Stereo Adapters Dodge Ram 1500 / 2500 / 3500 2007, Factory Replacement Wiring Harness by Metra®, with OEM Radio Plug, Fully Pinned. For factory stereo. This high-quality Metra wiring harness is just what you need to replace your defective or aged..