YOU DONT NEED TO PULL ANY WIRES OUT OF THE HARNESS...... odds are youll damage it, especially if youve never done it before. just take any piece of wire, strip it and put it in the empty slot above the yellow black wire. you can use crazy glue to make sure the wire wont come loose. then take the other side of the wire and ground it. (you can use the black wire in the harness as a ground)