Quote Originally Posted by PanMan_VA View Post
It is just a jumper from ground on one battery to the positive lead on the other battery in the male part of the plug as far as I can tell. It is a Marinco 12/24 volt plug.

I got everything wired this evening and it works ok. I don't have a clip on amp meter so I can't determine the current draw when I get the boat in the water.
I got one if we can ever get together. Should be about 45 amps.