geoboy wrote:
You have a propane leak alarm and a carbon monoxide alarm that are always active unless you shut the power off to the camper, they will drain your batteries.
That is correct, although they will do so very slowly; a few days should not cause a problem if these are the only consumers. But then the TE says in the original post:
paul_arc wrote:
On the plug I installed on the truck, I did NOT wire the 8 gauge 12v wire to the battery.
Somewhere, +12V must be connected. It could be a defective isolator, among other things. I wonder what the voltages of the truck and camper batteries are at he beginning and after a few days.