Coach vs. Generator batteries on FC

[Howard O. Truitt]

Scott,
I have ran down my coach batteries and killed the Gen battery also, had to call
for a jump start. Be interested to see what comes back on your post.
Howard Truitt
Camilla, Ga.
86 PT40
----- Original Message -----
From: Scott Forman
To: WanderlodgeForum@yahoogroups.com
Sent: Sunday, May 28, 2006 4:21 PM
Subject: [WanderlodgeForum] Coach vs. Generator batteries on FC


Hello all,

I have just finished removing my leveling pump from beneath the stair
well in anticipation of receiving a new one. While under there, I
have noticed various battery connections. I am looking for help to
understand it all.

It appears that a cable comes from the generator battery to the
solenoid on the leveling pump. On that same pin, there is also
another battery cable coming from a shunt attached to the back on the
step well right next to the leveling pump. The other side of that
shunt then has a cable that seems to come from the coach battery bank
and there is another solenoid attached here...I am assuming this is
the solenoid activated when you hit the battery boost switch on the
dash to tie coach & gen bats together.

A couple questions:

1) Does this all sound correct?

2) It would appear that the coach and gen bats have a connection to
each other through this shunt whether the dash switch is activated or
not. If this is the case, what happens when that solenoid is
activated?

3) If the coach bats and gen bat are always tied together, couldn't
the coach bats draw down the gen bat in a low voltage situation and
leave me stranded? I was under the impression that if I ever ran my
coach bats down dry camping, it wasn't a big problem as the gen bat
was isolated I could start the gen to charge the bats.

Just trying to understand all this and make sure mine is wired like
it should be. This area doesn't seem to be covered on any of the
blueprints in my blue box.

Thanks
Scott Forman
82 FC35RB
Memphis






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