I have a car radio/CD player at home that I was considering installing in the pup. I don't boondock at all so the CD player would run off shore power. Instead of hardwiring it to the pup I thought about installing a standard plug on the end, since there is an outlet inside the pup near my proposed installation area. Can this be done easily? I'm no electrician but I thought adding a standard plug to a car radio wouldn't be difficult.