I am at my final stage of my winch installation on my P1000 and need to tap into a 12 volt accessory wire. Where is the easiest place to tap into one? Picture or color of wire would be appreciated if possible. I also want to confirm that is okay to run heavy black wire back to battery as stated in my installation guide. I think I recall members stating that it should go to a ground on engine or frame. I have read a lot and could be mixing something up though. As always, thanks for the input!