Thanks to everyone for your input. I've seen the orange wire broke in half before. Now I've heard the two wires in the orange insulation can actually be broken with no visually way to detect the break. So I am going to put the multi meter on it and check the leads to see what the continuity is and the resistance. I also have one more problem. My direction/temperature readout on my rearview mirror is not working. Everyone had great input on the tow/haul problem and made my life much easier. Hopefully someone has ran into my second problem also. Thanks to all of you.