rv furnace blower motor

It's more likely a classic sign of a bad battery with the converter switching back and forth trying to charge it.

Rhythmic dimming of the lights is a classic symptom of a failing converter. I would check all battery connections (that means take them apart and clean them, not just eyeball em) and if it still does it, plan on a new converter. Soon.

I would start with a new battery.

Change the batt

darsben1 wrote:
The Lights going dim could be a sign of a bad ground either at the battery or the 12 volt panel or If on battery could be a large load coming on line causing the dimming if running off battery
Where you running off battery or on shore power?

Yes, #1 check all your battery connections for clean and secure. DON'T forget where the ground wire connects to the frame.

If battery is in good shape, and ground connections are solid, likely your converter/charger is going bad. If it is WFCO, most likely going bad, replace with a Progressive Dynamics unit of the same or slightly larger size and be done with it.

please check my last edit

The propane furnace blower motor is also a 12VDC item... Sounds like alot of items are losing 12VDC for whatever reason...

Roy Ken

we were hooked up to shore power, had the battery tested and the gentleman said it was border line

The Lights going dim could be a sign of a bad ground either at the battery or the 12 volt panel or If on battery could be a large load coming on line causing the dimming if running off battery
Where you running off battery or on shore power?