Pipeman wrote:
I made up a longer set of wires and attach them to the macerator wires with alligator clips. I hook them up to my 12 volt batteries in the trailer and pump into the 35 gallon black water tote that I have or into the house when at home. When dry camping I usually have the gennys running and at home the 5er is hooked up to a 30 amp plug to keep batteries charged. Simple.
Simple ! Elegant !
I would use at least 14 gauge wire, 12 would be better. Also, for heavy DC loads like that, install a set of Anderson PowerPole 45A connectors close to the batter bank with a 30A inline fuse. Couple of bucks on eBay.