This trailer extension cord redirects or connects the electrical systems from the truck or pickup to the hooked-up fifth-wheel trailer and these are the battery power, ground, tail and running lights, left turn/right turn and brake, brake controller output and reverse lights. This is applicable to your RV, trailer, caravans, campers and other towed vehicles. A vehicle trailer extension harness made of heavy duty ABS ergonomic polyvinyl plugs which has a 7 way RV blade sockets end that connects the male plug to the female socket with double-prong terminals.This extension is constructed for vehicles with an existing 7-pin wiring connector or trailer set ups. This trailer extension cord is made of durable wire material of thick pure copper and nickel plated pins, high-grade 10-14 AWG conductor, coated with heavy duty corrosion and abrasion resistant PVC cord and is tested for outdoor use.A flexible 4ft length plug-n-play cable wire, perfect for any towed vehicles with a ready 7 way trailer electrical system.This is a complete power adapter converter manufactured by AA Ignition which comes with a firm grip connectors with spring loaded caps that holds the trailer plug tight while it is connected and also has a pull designed plug end for easy removal. Save time from having malfunctions on equipments and having trouble rewiring, splicing or soldering wiring connections from your pickup to your 5th wheel trailer or vice-versa by purchasing this 7 way trailer plug wiring harness from AA Ignition. Great for: RV Camper Travel Trailers RV Boats Trucks