Here's a quick checklist:
1. Is the car AWD,4WD or RWD? - These are not meant to towed on a dolly.
2. Does the dolly have brakes? - required in most states due to the weight of the car + dolly. Surge brakes on the dolly are far easier to deal with as nothing needs to be done to the coach.
3. Do the dolly wheels swivel during turns? - If they do, you do not need to leave the car steering unlocked.
As to lights, I'd use the separate light bar mounted on the roof or back of the car.
Roger & Mary
2014 Tiffin Phaeton 36GH
2012 Honda Fit toad