Battery isolator problem I think...

[JBK]

The batteries for the coach drained from running the furnace and the engine won't start. When I hit the key, it turned over once and then nothing. The tach is registering around 4K and moves with load like a turn signal turned on. (This really has me stumped.)
Isn't there an isolator that is supposed to keep this from happening or do I have to manually move the switch in the battery box?
What is the talk of a button located in the glove box?

Also, the genset fuel pump doesn't come on when I try to start it. If I jump the pump, it works. Is there a relay or fuse I should be looking at?

JB

[JBK]

No reply on either of my questions?
JB

[bobchevy89]

JBK check the grounds on the engine battery I had something simuler on mine .check all ground cables on the moho, batt to engine engine to frame frame to body.when all are disembled and cleaned all systems work better ,lights get brighter. batt gets full charge. works for me..
Bob

[bibbs]

JB
I had the same thing happen on my Argosy,good clean grounds are important,in my case the isolation switch wasnt opening and thus draining both bateries. to test; disconect engine battery,put an ohm meter accros the switch[big red wires]should show no continuity when key is off [open] reconect battery and should be same reading. infinite with key on [closed]
I dont know where your isolation switch is located mine is inside the front engine compartment door,in a black plastic box,left hand side.
hope this helps

Bibbs