'85FC31 Security Light issue... update!

[Ralph L. Fullenwider]

Hello JR:

We are having snow flurries in Oklahoma today and it is BRRRRR! Ok, so not
as cold as the frozen North but still brrrr.

One important thing to note here is the old axiom of "little power moves
big power." The A/C units and electric heaters are picked by heavy duty
relays that is controlled by 12 vdc. The landing lights relays are
controlled by 12 vdc. So now the 120 VAC circuits are removed from the
equation so lets think "control voltage" and that control voltage being 12
vdc we need to start narrowing down to which part of the dc control system
goes haywire when it's button is pushed. There are 2 load centers that
control the front and rear landing lights. Both are on the drivers side,
one in the rear load center and the other in the front load center.

Some a questions
1. Is the summer/winter switch in the winter position?
2. Are the three selector switches over the drivers head off or on?
3. With the Coach in reverse and the back up light switch on the dash to
on, do the halogen back up lights work?
4. Do the front driving lights come on?
5. do both the front and rear landing lights not work? and have you tried
them separately and do you hear a loud "click" when the landing light
switch is switched to on?

There is no single "source" of power for each of these systems but there
may be a single 12vdc control voltage source for the 4 or 5 relays that
come into play.

Since the digitell works during the outage, we can pretty much eliminate
the 12vdc filter unit under the sofa, that is the long tall white unit
usually near the back. ALL 12vdc going to the electronics, ie: radios, cb,
clocks, times, report center in Galley go through this filter unit.

I know this is long winded but process of elimination can be arduous. Check
the open contact relay in the left front load center, (drivers side small
overhead compartment near the bath wall, in the Salon) to be sure nothing
as laying across the exposed contacts.

There are 2 large circuit breakers at the base of the steering column, I am
not talking about the Master 12 vdc cut off switch.

All this is off the top, sorry, I need to g out to my Coach and get the
prints and will do so in a bit.

I am thinking there is one control wire that is bare, has a connector
touching or perhaps a shorted relay coil going to ground when switched.

Safe travels,

Ralph and Charolette Fullenwider
84FC35 "Ruff Diamond"
Duncan, Oklahoma

At 03:43 PM 1/31/2008 +0000, you wrote:
>Ernie:
>
>Thanks for the advice and if Ralph is reading this, would you happen
>to be down near Fort Myers, FL anytime soon? Beautiful weather were
>having this time of year!!
>
>JR Torrico
>'85FC31' "The Short Bus"
>N Fort Myers, FL
>
>--- In WanderlodgeForum@yahoogroups.com, erniecarpet@... wrote:
> >
> > This sounds like a problem that needs Ralph.
> >
> > Ernie Ekberg
> > 83PT40
> > Weatherford, Tx
>
>