I have been using US Gear for 4 years. The system works great and I have had no problems with it. the hook up is incorporated with the light wiring so I only have to plug in lights and attach a break away switch. There is nothing to hook up in the car as it has been installed in its permanent position. I did all of the installation myself and it was very easy to do. I will use US Gear in my next motorhome. Don