HI their, I have a question? I have a 2005 Murray lawn Tractor 12.5HP. I want to run a wire through the positive battery terminal and through a switch and to switch my front lights grounded. I want to switch the front lights on and off even with engine off or running. I want it to be a option like a car. My question is will the positive wire melt eventuely or will it work? Please respond to me thank you.