ok so im putting my new apes together and trying to extend out the wiring for my start button/kill switch. in the wiring harness there are 2 black wires that are the same colors. iver gone down about 5 inchs on the wires and they are both black with a little dot along them what are they and how do i tell them apart? im just soddering in new wire myself and id rather not get my lines backwards. this is on a 07 vn2000 lt classic.