I used to put lights on my karmann ghia and on my 65 mustang. I would cut the ends off on the wires and at the farthest end of the loop, twist the two together and then at the front end, hook the wires to the + & - on my speaker amp and the lights would fade and dim to the music. Worked great and I would follow the local VFD when they were doing Santa handing out candy and I would be the music.