I'm not 100% sure what wire you need for your application but I found these guys when I was looking for a way to hook a small back up light bar on my 21 f150 xlt and not wanting to splice into my wiring harness. But after talking to them on the phone it sounds like they can make you a harness...
I went with Toyo at3s in a 275/65/20 and so far so good no experience in the snow or mud yet and aren't much louder then the stock tires. I have a 2.5" level