I've been testing this for about 16 months now. We have at least 10K offroad miles on this system including various BDR trails and the Rubicon twice. Holding up well!!
We simply installed a Camplux onto our tire carrier using straps.
To feed water from the sandy cats canister to the heater we used the Camplux tubing provided and attached a Colder coupling (HFC22657) onto the other side. This allows the camplux to connect to the Sandy Cats system.
We used a 1 pound propane tank adaptor to heat the Camplux. We store our tank in the spare tire bag behind the tire.
We than attached a Colder bulkhead (HFDC16657) to the camplux body by drilling a hole. Than using the camplux tubing we attached that to the bulkhead.
That's IT!
We will be building a kit for sale soon but this is fairly easy to DIY!