If the batteries accept water, make sure water covers the plates. Use only distilled water. You'll need a Volt Ohm meter (VOM).
1. Locate the Converter/charger.
2. Determine the VAC entering the converter. This should be 120 VAC.
3. Determine the VDC leaving the charger (anywhere between 14.1 and 13.4 VDC).
4. If the above voltage readings are good, move to the batteries.
5. Check the VDC across the battery terminals. 6.6 VDC for a 6 volt battery and 12.6 VDC for a 12 volt battery.
6. If #5 is good you'll need to make sure the batteries are fully charged. Remove the batteries from the coach and take them to the local auto parts store. Ask them to do a load test. This will tell you if the batteries have a dead cell or a just completely worn out.
As to where the converter is located, that is specific to your coach. Many times it is in the compartment that has the shore power cord.
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