maillemaker wrote:
The momentary switch is for temporary tying system together for emergency start.
The dual function is for charging the batteries.
Yes, I understood that much previously. But I thought there was some special or separate circuit for ganging the batteries together for charging vs. for boost.
If I understand correctly now, both ways the batteries are ganged together the exact same way.
The only difference is how the solenoid is switched on.
In the Dual position, the solenoid is only energized if the ignition is on. This way the batteries will not be ganged together if the engine is off, so your chassis battery cannot be depleted by running house things.
In the Momentary position, the solenoid is energized from the house bank, whether the ignition is on or off.
But in either case, the effect is to gang both batteries together. The only difference is which power source energizes the solenoid.
Does that sound correct?
Steve
Yep - the momentary switch is powered by the house battery
