X2 on JAYCO providing fast info you need for your JAYCO unit.
I see this new style water heater from google search on its model number needs a 10AMP 12VDC circuit to operate and since this is aftermarket it may have a 12VDC drop to the back of the unit where will find the fuse you find the fuse.
You should have the info on this unit provided in a separate folder full of all your appliances that came with your JAYCO unit.
It also might be a direct wire from the battery terminal - Mine has two or three auto reset type circuit breakers for my slides and stablizer jacks direct connected directly to the battery terminals.
Roy and Carolyn
I claim Horse Creek Country in Southern Ill - Momabear is from North Texas
We live in King George VA
RETIRED DOD DOAF DON CONTRACTOR Electronics Tech 42YRS
"We're burning daylight" - John Wayne
2008 STARCRAFT 14RT OFF-ROAD POPUP with PD9260C and three 85AH 12VDC batteries
2010 F150 FX4 5.4 GAS with 3.73 gears - Super Cab - Towing Package - 2KW Honda EU2000i Gen
K9PHT (since 1957) 146.52Mhz
"We always have a PLAN B"