I'm a hopeless doityourselfer. I am riging a 2000 for towing. I plan to tow my classic Benz, a 38 170v Cab A, using a U-Haul dolly to car shows inside a couple of hundred miles. I plan to buy towing lights and cable the 12 volts to the back of the 38. I assume the towing wire clip is behind one of the taillights? Also I hear the MB hitch requires a cut in the bumper access hatch. Do I need a converter to protect the computer?