I'm doing a little guessing as the older drawings are not really as good as we might like? It kind of gets like they have been printed too many times!! A little fuzzy, so look close before trusting it too far?
The switch to disconnect the coach battery (I think) will be number 4 on this drawing.
Then I feel like number three is the AUX/Boost Or whatever they called it that day!!
Click these drawings to get a better view!
I think no 3 sends power down to the mode solenoid when. That power goes through the coil of the solenoid and then to ground it gets from the solenoid mounting screws!
When it gets power on the blue wire, the contacts close and coach battery on the big lug on the left is connected to the chassis battery on the right big lug.
Two big. normal looking battery cables!
This wire LR also gets power when we have the ignition on, so two ways or times when the solenoid operates!! Push the button or start the engine!
At one time they may have had tape at the ends to mark them with this code? The tape tends to come off or lost!
Then the battery disconnect has wires from a switch. I think that is no. 4 on this drawing? But check that!
That switch can be rocked to engage or rocked the other way to disengage the relay it connects to that really then makes the connections to the battery.
I don't spot it on the drawings for your RV but they are almost always together and look just like the drawing shows. Maybe a panel outside behind the drivers door and a label saying solenoid and relay here? Good chance they are in behind a fuse or breaker panel there, so that they are a pin to get at but you may peak in an see them?
Solenoid is a silver metal can and relay is black plastic looking stuff (bakelight?)
Two different parts doing different things but they need each other, just I find it easier to look at each as separate. My mind won't handle it all at once!
On the disconnect, the switch sends power down the purple line to either engage/close the disconnect or the other disengages/opens the relay.
When this relay is closed, power comes from the coach batteries at left, goes through the relay to most of the RV and a line going to the generator starter solenoid to make it turns when trying to start!
A couple tricks that may help?
The solenoid is big and you can often here it thump if close and somebody pushes the switch! Or if you have chassis battery on the right side and short it to the small center post, you should here it thump to connect!
That thump means it is moving but if the contacts are burned too bad, they may not pass the current!
But I'm thinking the generator problem is in the battery disconnect part! If that relay doesn't close, the generator starter gets nothing!
This relay "latches" with a magnet gizmo, so it stays open or closed until it gets power on either LG or LH to move it the other way!
But if you can get a meter probe or wire in far enough to get on the right side of the relay, there should be no battery if open and then 12Volts when it closes. Those two black wires shown below right take power to the fuses/breakers for most of the inside lights, fans, pump in the RV!
If the inside lights work, that says this relay is closed, so if the generator still has nothing, start chasing that battery cable to the generator?
Hope not too much and blow your mind! I stumbled a lot getting this straight over time!
Linear Mode
