You can't "tap into" the vehicle's wiring harness to run an electric winch, it draws too much current. My winch came with a #8 cable and 50 amp circuit breaker to be connected to the battery positive post and a shorter cable to be connected to the vehicle ground (connect it to a good solid ground like the frame or trailer hitch, not just sheet metal). It's not that hard to do, just be careful when you route the cable to keep it away from anything hot or anything that moves. I installed a heavy duty socket next to the trailer wiring connection on the truck and a matching plug on a pigtail connected to the winch. An advantage of using the vehicle battery is that you can leave the engine running for a little extra voltage (I don't but I've seen others do it, just like jump starting a car).Originally posted by jtexas:<br /><br />If it's just that you're nervous about tapping into your vehicle wiring harness (I would be too since I know little to nothing about that), I'd think about running a couple wires from the boat battery. That or else I bet somebody on iboats can tell you exactly how to do it.
That winch will draw way more current than the trailer socket can provide. You can use the trailer socket to charge an extra battery but not to operate the winch.Originally posted by gstanton:<br /> .... Also, if your truck is already wired for towing a travel trailer, you could use a seven pin plug and tap into the 12 volts that is coming back to the connector to power your winch. I'm not sure which pin is the 12 volt pin, but your owners guide should have it. It's purpose is to charge the travel trailer's on board battery as you travel.