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Old 05-15-2018, 08:25 PM   #1
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need 12 volt help

I was installing a 12 volt power jack found out the frame is 12 volt energized any thoughts on where to start also it only happens when I am plugged into shore power
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Old 05-15-2018, 09:00 PM   #2
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Be sure all grounds and neutrals fasten to the frame are clean. Also check if you have a open ground to shore power. Both are very common problems.
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Old 05-15-2018, 09:09 PM   #3
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What do you mean when you say the frame is “12 volt energized”?

What are you measuring and how are you measuring it?
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Old 05-15-2018, 09:15 PM   #4
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Also check all grounds and neutral at main breaker panel. I had one very loose neutral and one not so tight ground from factory.
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Old 05-15-2018, 09:37 PM   #5
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with shore power connected I used a 12 volt test light clamped to ground and touched tip to frame and light came on so frame is hot or as I said energized I disconnected shore power and frame is no longer hot with test light
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Old 05-16-2018, 10:33 AM   #6
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What did you have the test light lead connected to??
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Old 05-16-2018, 10:39 AM   #7
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What "ground" did you clamp it to? The green wire on a 3-prong plug? An earth ground?

You have not determined that the frame has +12VDC on it, you have determined that there is a voltage difference between the frame and whatever you clamped the test light to.

Do you own a multimeter?
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Old 05-16-2018, 12:23 PM   #8
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If you're seeing 12 volts between the neg (gnd) terminal of your battery and the trailer's frame, then you almost for sure have a bad connection where the battery's ground wire is attached to the frame. It's usually a bolt with a star washer about 3' away from the battery just under the body.

I've had that happen on 3 different trailers. In one case, the star washer didn't bite through the paint on the frame, on another it didn't even have a washer, and I think the 3rd was just corroded.
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Old 05-16-2018, 07:01 PM   #9
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well after 8 hours of testing found the converter to be bad and big thanks to Progressive Dynamics for helping me to field test converter so its under warranty and a new one on the way thanks to every one who helped with suggestions don't hurt to clean grounds they sure needed it
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