Xantrex Generator Auto Start

[mbulriss]

Charlie,

Since no one has responded, I'll give it a shot. After looking it up, I see
that your Xantrex auto start box has wiring conncetions for the start, stop and
preheat functions, among others. My guess is you are going to need Bosch relays
that these three wires will feed in the overhead and then splice the output side
of the Bosch relay into the appropriate wires coming off the backside of the
genset switch for each function. I have not looked at the back side of that
switch, but I note that the front stop side also powers the preheat function, so
you may only need two Bosch relays and trigger one with both the preheat and
stop wires.

That's where I would start.

If you are not familiar with Bosch relays, there are plenty of diagrams on the
net showing how they work. Basically they have power in/power out, and you will
use the wiring inputs from the Xantrex to trigger the power to the circuit you
need energized (e.g. the wires coming off the genset switch for each of the 3
functions, since you are trying to use the existing switch wiring).

The Bosch relays are commonly used to provide a shorter power path to
electronics rather than enduring a significant lose of current by having a long
run from the battery to an on/off switch, and then to the device being powered.
As such they have been used to brighten headlights on the older Birds by
reducing long wiring runs. On my drag car, I used a Bosch relay to reduce the
power run from the battery to the electric fuel pump to about one foot of
wiring, and then using a dash switch to energize the Bosch relay. The short run
provided better power to the fuel pump, thereby eliminating a fuel flow problem
that had developed under heavy load.

Hope this helps. I'll double check this with electrical guru Bill Schreurs
tomorrow when I see him, since he stopped by my little town tonight.

Mike Bulriss - I run an electronics mfg company but HATE electric work
1991 WB40 "Texas Minivan"
San Antonio, TX


--- In WanderlodgeForum@yahoogroups.com, "chaaur2" wrote:
>
> Wiring connections at the start switch to make it work
>
> --- In WanderlodgeForum@yahoogroups.com, "mbulriss" <mbulriss@> wrote:
> >
> > Charlie,
> >
> > I'm not clear if you are asking about wire runs to reach a gen start switch,
or wiring connections at the start switch to make it work?
> >
> > Assuming (danger, I know) that you are talking wiring runs, and that your
Xantrex is in the rear bay on the passenger side right above the battery bank,
like on my 91, wouldn't it be easier to run the wire to the gen start switch in
the bedroom rather than to the front overhead? On my 91, the rear gen start
switch is almost directly above the Inverter/Charger. That would be the
shortest wiring run.
> >
> > Close?
> >
> > Mike Bulriss
> > 1991 WB40 "Texas Minivan"
> > San Antonio, TX
> >
> > --- In WanderlodgeForum@yahoogroups.com, "chaaur2" wrote:
> > >
> > > I have a Xantrex Freedom SW 3012 Inverter/Charger installed in my 93 WB, I
am attempting to install the auto start for the generator using the remote start
switch that is located in the overhead. Any help with the wiring would be
appreciated.
> > >
> > > Thanks
> > > Charlie
> > > St. Albans, WV
> > > 93 WB
> > >
> >
>