My6mejias

Hello, I belief you are one of the forum members that has a hilo that's closest in year as mine (I have a 1989 Voyager Classic). Under the front couch there's an outlet which has 2 things plugged in to it; one is the converter, and I am trying to figure out what is the other wire plugged in there, It exits downward thru the floor by the fresh water tank. But I'm not able to see where it heads to underneath outside. If it's possible; can you please take a look and see if your hilo also has such an outlet under the couch. And would you know what that mystery plug is powering? Thank you so much for your help.
Angel.