I think there is a misunderstanding, I have scotty electric downriggers on my boat, with two marinco style plugs, and they are wired with heavy gauge wire. I want to get an adapter that will plug into the marinco outlet that will let me plug in regular 12 volt adapters, I sleep on my boat and want to be able to plug in my CPAP machine which draws less amps than the downriggers 30 amp circuit setup.