follow the wires from the immobilizer box, all wires are typically black. follow them to wires that arent black, and cut and join the wires they join to. Color for color. So if there are 4 black wires, leading to 2 red wires and 2 green wires. Cut the 4 black wires and join them so the 2 green wires join again and so that the 2 red wires join again.