Today we're gonna be installing Tekonsha's Heavy Duty ModuLite Vehicle Wiring Harness for your 2014 Audi Q7. This wiring harness is gonna provide you with all the necessary lighting that you'll need on your trailer to be DOT compliant in all states. This includes your left turn signal, right turn signal, tail lamps and brake lamps. This way you can be ensured that when you're going on your… see more >