wrote in message
...
I hate to be simplistic or take the fun out of anyone's project,
but...

In the time it would take to read this thread, you could visit
http://www.go2marine.com/category.do?no=14018

Get a professional on the phone and order the right thing. If it were
my time and money I'd spend it paying an expert rather than on
becoming an expert myself.

AsianDoll


What "thing"?

I didn't see any air-conditioning systems or heaters that run on 12 volts
there.

Eisboch