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Old 09-12-2012, 07:51 PM   #1
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campingne
electrical problem dimming lights

Hello
I am having a problem with my lights dimming way down kind with a pulse. I went into my camper to start getting ready for a trip in a couple weeks. I have a 2006 T2075. I had about 6 lights on and my maxxair. I amplugged into my 30 amp plug. After about 30 min the lights started to dim down 50% then back Upto 80% back and forth. I shut off the main breaker and put it back on and the lights stay on 100% for about 10 min and they would dim again. I hope that someone could point me in the right direction.
is this a power supply problem?
thank you chris
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Old 09-12-2012, 10:05 PM   #2
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This sort of points to a converter problem or a battery problem or both.

Do you have a volt meter?

Checking the voltage at the battery with and without the camper disconnect switch turned on tells us a lot.

Then turn on a light and read the voltage with the disconnect on.

Then what is the battery voltage when the converter is plugged into shore power and the battery disconnect is on.

A fully charged battery at rest will be 12.6 to 12.7 volts DC. It may be lower if it is discharged. At rest means not on a changer for at last 8 hours and was fully charged with no load on it.

When the converter is doing something, the battery should be up at 13.25 volts for float mode or 13.65 volt for normal charge. I think yours is a WFCO converter is it not? Some of them may have had a 14.4 volt mode too. Point is if the volts do not rise to at least 13.2 when plugged into shore power, the converter is not doing anything.

See this post at Wannabes just went through this. It may help. Then ask away here on your post for clarifications.

Newbie Question #2: Battery/Electrical Issues

I will be out camping this weekend so it may be a bit to get back to you but others can help too.

Good luck and hope this helps

John
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Old 09-16-2012, 09:51 AM   #3
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because the lights dim down on battey and converter makes me look at a bad connection, like I found at the fuse center, if the battery is charged up.
a volt meter is a must here! are all this dim lights/fan on same fuse?
No meter, try the water pump,If it runs well while lights are dimming power soure is ok and the poor fuse / wire connection for the dimming circut is likely
This was my issue, fuse was hot and a wigggle test made lights flicker.
wayne
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