Foretravel Owners' Forum For owners and Fans of Foretravel Motorcoaches September 13, 2025 ...

Don,
Relays are tripping and self-resetting due to a current overload.  Relay is doing what it is supposed to.  My guess is while working under the sink you inadvertently shorted a power lead for something - that's where I would look for the problem.  I would use the salesman switch to stop it while looking.

I would guess that that is the switch that you are calling the salesman switch. Is that correct?

Yes.
This is just a guess but it sounds like there is power back feeding.  Here's what I would do next.  With the salesman switch off, go to the 12 volt panel under the bed and see if there is 12 volts there (I imagine there is if the lights still come on).  If so, pull all the fuses and see what side (ie. main side or circuit side) is supplying the 12 volts.  I'm thinking at least one circuit will be hot and in it will contain a connection to power that shouldn't be there.  While you have all the fuses pulled, go back and turn on the salesman switch and see if the main side of the fuse panel becomes hot (as it should).  Bear in mind that this is all based on how my coach is wired - Foretravel is pretty consistent thorough the years but you never know.

Some model coaches have a high amperage mechanical switch with a handle, in stairwell to disconnect much but not all 12-volt circuits. Fridge & detectors stay powered all the time.

Some models have a high amperage solenoid in the bay, with a small momentary switch near the stairs that does the same job. It is very important to only use a momentary switch as the expensive large high amperage BigBoy latching relay uses a push-on, push-off circuit and a steady on, will burn out relay control.
http://www.dodgenmobiletech.com/sites/default/files/Intellitec%20Big%20Boy%20200%20Amp%20Battery%20Disconnect.pdf

As far as I know, that master switch to turn all 12 coach systems off except detectors and the fridge. hmmm...

Following our wiring diagram, our mechanical door master switch has large diameter cables from & to bay wall 90-amp circuit breakers, one of which has a mechanical reset through water bay hole. Switch is working ok if it turns on & off the bay cable terminal.

When the stairwell disconnect switch is open, the dash radio 'memory' circuit is still powered through a breaker on the big panel in front of the co-pilot seat or on the bay wall behind fiberglass cover. Other dash radio wires are off when stairwell switch is open. If the dash radio power harness has a 'short' from off and on wires, when stairwell switch is open, this short will try to power all off circuits through the memory breaker, thus overloading the memory wire and its breaker.  Maybe this was your problem.