I've had my 2000 270 for one season now and I need a new water heater. I bought a Force 10 6 gallon to replace the Atwood ehm6. The Force model has the heat exchanger to run off the engine cooling (raw water-cooled). Before I get into plumbing, what do I need to do on the electrical side to run it off of DC while underway? Right now there's just the AC switch on the main panel.
On a side note, after reading through my documentation, I realize how little I understand my boat's electrical system. Example, I don't understand why my refrigerator, an a/c appliance, can run under DC but my microwave can't. But that's a topic for another day. Any info much appreciated.