Feature 1 DOUBLE PRONG CONSTRUCTION: This trailer 7 pin wiring harness uses excellent double prongs instead of inferior single prongs, solid brass wire is strong and durable, brass terminals ensure a solid connection, ready to be spliced into existing trailer wiring 2 WIDE APPLICATION: 7 pin trailer extension can be used to attach tail lights, brake lights, backup lights and turn signals 3 SECURE AND SAFE: Dual prong brass terminals ensure a secure connection every time. No more dangerous flashing lights or malfunctioning equipment with this 7 way trailer harness kit 4 CORROSION RESISTANT PVC: This trailer light plug is made of a kink free PVC sheath that is waterproof, corrosion resistant and durable 5 UPGRADE REPLACEMENT: This 7 pin trailer harness is interchangeable with virtually any 7 way RV connector, upgrading old corroded 7 way plugs on your RV, camper, trailer, dining car, and other tractors, making all your wires kept in orderItem Type: 7 Way Trailer CordMaterial: PVC and brassNumber of Pins: 7 PinCore Wire Square: 2x10AWG, 1x12AWG and 4x14AWGMain Function: Connect and conduct electrical signals between the tractor and the towed vehicleApplication Range: Commercial vehicle, trailer, RV, car, ship, etc. Package List1 x 7 Way Trailer CordNotePlease allow tiny size error due to manual measurement. Please take the real one as standard.