I'm going to be putting a marine speaker under the hood of my car behind the grille I want to run a kill switch into the cabin so I can only turn it on when needed I'm looking for something that will not cause me any resistance or quality loss problems I'm not real sure how to wire something like this until I see the switch but I'm guessing you only run the (+) to the switch and leave the (-) one whole wire and no i am not turning my car into an icecream truck........ its for the drive in movies Thanks and have an awesome day