FWIW.
for all your 12v needs just keep it simple and go with a 24v to 12v converter, 27.5amp astrodyne unit runs about $135 or so, if you need more power get another converter, lots of pinz owners run multiple converters, I have 1 converter and 1 battery equalizer with a 20amp tap, as a new bonus I had a alternator rebuilt for 50.5 amps, cost me $150.00 plus another $100.00 in misc. parts for the install, now my batteries top off quickly and I have tons of reserve for a future winch or running my huge 24volt compressor.
Can provide spme pics and lists of needed parts for dong the alternator rebuild just ask.