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Dave22's avatar
Dave22
Explorer
Jul 19, 2015

battery charging

Coachmen freelander.
My engine does not charge the coach batteries. What do I look for?
  • As the post above says find the isolator. If you have a starting boost switch up front, listen for the click when you press it. That's the solenoid you're looking for.
  • Trace the large-gauge wire from the alternator B+ terminal. It will go to a battery isolator.

    It could be a DIODE-BASED isolator or SOLENOID-BASED isolator. You need to verify charging voltage to it from the alternator and charge voltage out to the coach (house) battery bank.