How is generator battery charged on an 82 FC?

[davidkerryedwards]

Ah ha. I've seen what I think is that isolate in the house battery compartment
mounted on
the back wall. There is a heavy cable that is pretty obviously disconnected
from that
isolator. I have no idea why, but this could easily be the cable of which you
speak and
would account for the dead battery. Any idea why someone might disconnect that
cable?
It does seem as though the voltage meter on the generator reads higher when the
main
engine is running.

Kerry
82 Fc 35
Denver
--- In WanderlodgeForum@yahoogroups.com, "freewill2008" wrote:
>
> The genset battery was set up at the factory to charge from the
> convertor or the 3208 alternator. A solid state battery isolator is
> mounted in the battery compartment to prevent the generator battery
> from discharging along with the coach batteries. (Only two of the
> three terminals are used on the isolator because the isoloater was
> not used for the coach batteries.) From the isolater there is a
> cable that runs along the streetside frame rail until it crosses over
> to the generator tray. On its way to the genset, the charge cable
> from the isolator stops at the combiner relay which activates from
> your dash switch. (From the other side of that combiner relay another
> cable runs to the 3208 cranking motor. This is where the power comes
> from to start the genset when you hit the dash switch.)
>
> The factory design was not exactly intuitive. It takes some time with
> the wiring diagrams to realize how their design works. Some coaches
> have been modified in an attempt to "fix" the way BB wired it
> (although it was not broken in the first place). You need to be sure
> the original setup or some viable substitute is in place and working
> or the genset battery will end up dead.
>
> Also, lots of coaches have been upgraded for separate house and
> cranking batteries. If this has been done, charging current for the
> genset might have been overlooked in the re-design.
>
> Bob Griesel '84 FC31 WLII WA