Napa's Part Number = 728216. Cost = $24.95 Ea. They come with red and black wire like the one on the left side of this photo. I used red and black electrical tape to make all the wires coming out the same color in an effort to make them Idiot proof if I need a jump start. I also wraped the splice with tape to help keep moisture out even more than the box does. Was thinking of filling the box with silicon caulk...