The easiest way out that I can think of is to buy a trailer light interface,plug it in your harness,and then run your wires from the interface to your taillights.Yellow should be turn for one side,and green the other. I can never remember which is which,so I always have to test with a light. The other choice would involve rerouting the wires from the brake light switch up through the column and sending the power out through the turn signal wiring,but this only works if your ts switch is wired to be used this way. If not you end up with power going out to the front lights also,not just the rear. Hope this helps, Hank