Hi. I have a vintage 18 ft 1960's lifeboat with a cabin I made. Power is from a 1992 50 hp Johnson. ( spare is 15 hp Yam). I would like to install an isolator so there would be no chance one battery could discharge the other while I'm out in the middle of the St-Lawrence. Besides, right now, I only charge my accessories battery when docked. Both batteries are in the cabin. The one for starting is recharged by the motor. I do have a Sure Power 952 isolater but have no idea how to wire it up. Are there any diagrams available ? Or is this the right product ? Thanks for your time and gretings from Northeastern Québec.