Interior coach lights dim and flicker ???

Had the same thing happen to me a few months back.
2 of my 4 6v house batteries were bad.

Get a guy out to check the batteries or pull them yourself and have them checked.
Replace the bad ones, see if problem goes away.

If issue is unresolved, look at the inverter for repair or replacment.

Had the same thing happen to me a few months back.
2 of my 4 6v house batteries were bad.

Get a guy out to check the batteries or pull them yourself and have them checked.
Replace the bad ones, see if problem goes away.

If issue is unresolved, look at the inverter for repair or replacment.

Ours was doing that, had to replace converter, and it cured it.

You may have a battery disconnect switch, usually in the electrical equipment bay. Make sure that is turned on. Even if you are plugged into outside power, if that switch is off you are drawing off the batteries only. I forgot to turn mine on once, noticed lights dimming over 2-3 days and thought my batteries were shot. Once the switch was turned on, all was fine. Check it!

Do you have an inverter or converter?? Yes, flickering lights with a converter can easily happen, not so much with an inverter.

At first blush I would lean towards a loose/corroded terminal since it's the simplest problem and you had that issue once before.

Bobchambe wrote:
I would get a voltage meter and check the output voltage from your converter.
Should be around 13.5 volts on a 12 volt system.
Are the lights doing the same thing with the engine running?
When my converter went, the lights would work fine when I started the engine, and go dim when I turned it off.

That's what mine does when the engine is on the lights are fine when the engine is off they go dim. Although right now they are bright as can be and the engine is off.

I would get a voltage meter and check the output voltage from your converter.
Should be around 13.5 volts on a 12 volt system.
Are the lights doing the same thing with the engine running?
When my converter went, the lights would work fine when I started the engine, and go dim when I turned it off.

If your battery is doing the shorted cell routine that will load down your converter/charger unit and make it do strange things...

The only two shorted cell batteries I have run across here usually ended up only showing 5-6VDC at the terminals... I guess it does different on which cell or cells are shorted out. Most cases for the shorted cell was boiling out my battery fluids over time and not catching it in time...

Hopefully the on-board converter/charger will be OK but I would get the bad battery out of the circuit right away. You may be flirting with doing more damage to the converter/charger unit trying to make your bad battery good again...

Roy Ken

wildmanbaker wrote:
If you have 6 volt batteries, check the voltage at each battery. If they are both near the same, put a battery charger on them. 10 volts is virtually a dead battery. If you leave them in this state, they will sulfate, and loose some reserve. If they come up in voltage, the converter is bad, as stated before, and needs to be replaced. Converters do not last forever, or even close. I have found that "PowerMax" is about the most dependable brand right now. I have used and tried most of the other brands, but this one seems to be about the most durable.

I have two twelve batteries

New development when nothing is on battery life goes up when lights are turned on the battery volt goes down does this mean the converter is charging and the batteries are not holding that would be happy times for me ??