Hello all.
The following has occurred a second time on my Breakaway. Maybe someone has a thought as to the cause.

Upon shutting the engine off I discover I have no domestic 12V power. If I simply turn the ignition back on I have domestic 12V, but the source of power is my chassis batteries. (I know this by monitoring my chassis batteries discharging.) Turning the ignition off results again in no domestic 12V.

After some time passing I can turn the ignition off and properly have domestic 12V from my domestic batteries.

I imagine I should be looking for a solenoid but don't know where to look.

Thanks for your thoughts

there are a pair of starter type solenoids either in the driver side or passenger side battery compartment. The switch the domestic power to the engine power for charging while running and then isolate the two when engine off. you should have a wiring diagram but sometimes the location gets changed during production. john

Either:

or ?:

The solenoids John is referring to are located in the battery compartment on the driver's side in our coach. They are mounted on the wall just left of the batteries .

Your coach could be different . Ours also had a house battery kill switch on the wall next to the co-pilot.

My pictures show the only two electrical devices in the battery compartments. I thought the solenoids may be located around the battery compartments' corners - in the main engine bay. However, I don't see anything in the engine bay.

At the foot of the bed is my domestic 12V main solenoid and underneath that is I believe the "Aux. Start" (normally open) solenoid manually activated at the dash for the domestic batteries to assist the chassis batteries to start the engine.

I bypassed and did away with my the Domestic solenoid . My 12v house power stays on unless I turn off my manual battery switch to the house batteries . I still have the auxiliary start solenoid and the solenoid that charges the house batteries .

Does yours have a house master electric kill switch just for the house 12v ? Ours was on the wall by the co-pilot.

Does yours have a house master electric kill switch just for the house 12v ?

Yes, it's the gold-colored LARGE solenoid in the above picture, located at the foot of the bed. The wires, on top, are out of the picture.

Sure wish I could locate the solenoid that is activated by the ignition. I imagine it would be normally open, continuous duty?

The house solenoid should have power constantly from the house batteries . There should be a switch to activate it and then put power to the load terminal . Either the solenoid is not getting power from the house batteries or it isn't passing power to the load terminal . If you have power to the house solenoid from the house batteries , then you either don't have power from the switch that actives it or the solenoid is not working . A bad or burnt connection inside the solenoid can cause the problem , or a loss of ground to the solenoid .

It is still a good idea to locate the solenoid activated by the ignition that charges the house batteries while driving . The more learned about the coach , the easier it is to work on . The "charging" solenoid will have to tie into the house batteries and coach batteries or alternator . Tracing the heavy battery cables should find it . It should be normally open .

Update : We are communicating through PM and soon text to resolve this problem . When it's figured out the results will be posted for future reference .

As with all intermittent electrical problems only time will tell if the problem has been resolved.

We surmised my master 12V solenoid is probably the culprit. Harold doesn't use one in his coach, rather simply a disconnect at the batteries. At my solenoid I will simply move the lead over to the constant hot post.

quote:

Originally posted by Pirate19:
Either:

the picture you listed as either is circuit breaker for one of the heavy duty power lines. Mine were 80 amp.

Great to know. That is the only device on my 12V domestic battery lead ahead of my master solenoid.

Being a "breaker", I imagine it resets itself when the draw is under the maximum amperage, unlike a fuse, correct?

It may not reset itself . If it trips , that one probably requires pushing the red button in to reset .

It would be easy to check voltage on the two sides to determine if it is tripped .