Hi, just purchase a 2004 34' Georgetown 325DS and a Tow Master dolly to tow my Nissan Cube. I'm taking my RV in on Friday to have it wired for the electric brakes on my dolly. My question is, I was told that I had to have extra lights on my car when towing and that I needed to get those magnetic lights that stick on the top of the car. How exactly do they work? Do I now have to take my car somewhere and have wiring ran so those lights would work?