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Old 04-24-2012, 11:37 AM   #1
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Lights brighten and dim on trailer

On several camping trips now I have noticed my lights dimming and then getting brighter. I first thought it was the park we were in, but it happened while running off of the generator and also at the most recent park we stayed in. Is this the inverter or do I need a surge guard?

2000 F250 7.3 sc lbed 4x4
2007 Keystone 310SRX
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Old 04-24-2012, 11:47 AM   #2
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I assume the lights in your trailer are 12 volt, so first check your battery and then the output of your converter, but it sounds like the converter is going bad.


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Old 04-24-2012, 12:00 PM   #3
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Cheapest things first. Are all the battery connections clean? Include the battery to ground connections.

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Old 04-24-2012, 12:14 PM   #4
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If you have a multistage converter, it will vary the 12VDC output voltage according to the demand on the 12VDC system. Check and let us know what converter you're using.

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Old 04-25-2012, 09:38 AM   #5
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I have a PD 80 amp converter with the charge wizard, it does the same thing. Worried me at first until I realized that it was the converter ramping up the charge rate for a bit. Just guessing here but I think with older batteries you might see more of this than with newer batts.
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