How to Wire an Electric Winch | etrailer How to Wire an Electric Winch. Electric winches require power from a battery to be operational. With proper wiring, power can be provided to the winch through a vehicle battery or through a separate, auxiliary battery that powers the winch only. Related searches for traveller winch wiring diagram traveler winches websitetraveller 2500 winch wiring diagramtraveller winch 4500 wiring instructionstraveller winch installation instructionstraveller wireless winch diagramtraveler 2500 lb winch wiringtraveller wireless remote control diagramwho makes traveller winches