Connor, I have an e-mail from Terry with that info that I'll forward.
Terry, I think there's something to be said for having the switch outside the engine compartment! A guy I worked with had a 34' Viking with twin diesels that caught fire while underway, evidently due to an electrical problem. His automatic fire extinguisher went off, putting out the fire and also killing the engines. When he opened the hatch to turn off the battery switch, the fire re-ignited!
The boat sank just a couple of miles offshore!
Denny