I finished installing my brake controller very late last Friday, made a 4 hour tow to Watkins Glen without a problem. Used the LCM for brake. I ran a four wire 12 guage to the trunk for power ground and e-brakes. Trailer place recommended using the third brake light as a source which is why I ran the four wire cable, as it was late I thought it would be easier to just grab the signal from the LCM. I also used the Prodigy. What a difference from my Durango and no-name brake controller. The old controller was too much when going slow and not enough when trying to stop quickly when going fast. Also going up hills I would have to downshift in the Durango to hold the lower gear, what a pleasure it was with the X5, I could lift and it would hold the lower gear. A smart transmission is great. I just have to figure out what speed is best for cruising, 70 feels fine, but so does 80...