I had occassion to do some work on my trailer plug this weekennd. In doing so, during the quality assurance and safety followup check my digital VOM reflected that when the truck (Dodge RAM... :teeth ) lights were off there was no electricity flowing to the trailer, duh. So I got to wondering why all the concern about unplugging cuz I thought the thread started where one backs the trailer into the water. Sure glad to find out it was just being backed into a driveway and that the cord was too short. Thought I was loosing it for a moment!