Our 7-Pin Trailer Wiring Harness is designed to easily connect your trailer's electrical system to your vehicle's brake and taillight wiring system Pin Number: 7; Voltage: 6-24V; Total Length: 224cm / 88., 19; Width: 8cm / 3., 15; Height: 8cm / 3., 15 This trailer wiring harness plugs into existing original equipment wiring on your vehicle Fitment: for Dodge for Ram 1500 2500 3500 Ram 1500 2500 3500 Towing Harness Aazon.co: X AUTOHAUX 7 Pin Trailer Wiring Harness Extension 7 Pin Wiring Extension 7' Custom Wiring Extension Harness: Efficiently extends a 7-way RV blade socket into the truck bed. Maintains power to the rear socket for uninterrupted towing... The wires are also protected by a slit loom sleeve. Description:This trailer wiring harness plugs into existing equipment wiring on your vehicle, and equips it with a standard 7-pin wiring connector for plugging in and towing a trailer. CURT 56070010 Custom Wiring Harness Extension Package Include: 1 x 7 Pin Trailer Wiring Harness with Connectors; 8 x Cable Ties; 4 x Screw; 1 x Product Manual