What is this in batt compartment? A battery tender??
On my fairly recently purchased 03 HR Endeavor 38PST, there is this 2" X 2" black box with three wires that go into the relay that feeds the coach and chassis batteries. Is it possible that this is a battery tender for both sets of batteries?
It is wired like one of the commercial websites shows their tenders are wired: one lead goes to left side of solenoid; one to right; and the third wire goes to maybe a ground?
I tried to check the wiring diagram for the Endeavor, and the closest item I can find is a "Isolator delay module" -- but the wiring isn't the same. Anyone out there know exactly what it is?
See pics. Thanks.