I actually only fit one socket into the fuz side, the negative female from the ESC. I have another hole alongside which is finished off with an old MK fuel dot bezel. The negative battery lead is passed through this bezel when installing the battery and left dangling. When you want to arm you push it into the socket.

Advantage - no extra plug and socket electrical resistance. Disadvantage - you cant fit an anti sparking resistor across the two sockets.

Malcolm