Camper electrical question

Looking for a flush mount receptacle to mount on the side in the bed to plug a camper into. NO, I don't want or need a 4way, 7way, etc. camper plug. All I need is a line to charge the battery in the camper off of a dual battery isolator. The rub is the bigger wire size the better for less loss in resistance. I would like to use a fork lift plug but can't find a flush mount. So, ideas and no I don;t want to use a house outlet either. There has to be a heavy duty 2 prong plug like the cheapies you buy at Radio Shack???

 

Maybe radioshack. Better hurry up before they go out of business. (Which was sad to hear)

 

Jim, maybe the tracker trailer dealer will have what you are looking for. Voltage loss can cause undercharging of you house battery resulting in a premature battery failure from a gradual buildup of lead sulfate. Periodical "topping off" your house battery with an external charger can solve this problem.

 

What? All I was looking for was the plug. I have the charging all in order. I ended up with a flush mount Sierra Trolling Motor Plug with spring loaded flap. Nice plug for anyone doing the same