From all the literature I've read, all you need to do is make up a 3-conductor cable (2-hot, one ground)(use at least #10ga. wire for the 'hots') with the appropriate male ends, and plug it into both generators and connect the ground wire to both. They have seperate female jacks for the connectors to be inserted into, plus a ground screw for the green wire ground. You don't use the regular outlets for paralleling them. The generators will synchronize themselves, but you MUST make your connections BEFORE starting either one. There are junction/outlet boxes made that have the necessary wires/plugs, and either a 30 or 50 amp rv-type receptacle for direct connection of the coach. Should be relatively simple to make your own outlet box should you decide to do so.