Your coach has a three-position rocker switch on the instrument panel labeled "Merge." With the rocker switch in the center position, the coach and engine start batteries are isolated, with the converter/charger charging only the house batteries and the alternator charging only the engine start batteries. With this switch pushed in at the top or bottom, the batteries will be interconnected through an electric solenoid located on the electrical terminal panel at the right rear corner of the coach. When merged, either the converter charger or the alternator will charge both the house and the engine start batteries. The solenoid has a limited life and we recommend replacement annually.
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Hopefully this helps.
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