We tow our 2013 GMC Terrain and don't have any problem. I cut everything off, pull the fuse, then turn the key 2 clicks forward which allows me to put the transmission in neutral, then 1 click backwards, tow 250 miles and start the engine for 5 minutes, run through the gears a couple of time and do it all again. Our lights are independent of the car lights. I think we used Roadmaster Tail Light Wiring Kit, part # RM-155. This wiring kit will have independent bulbs and sockets that are mounted inside the tail lights. This will bypass the towed vehicles electrical system completely.