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Old 09-19-2021, 09:30 AM   #1
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Join Date: Aug 2021
Location: Napa
Posts: 14
Fan electrical issue

My '97 SMB came with a melted piece of plastic where an oscillating fan used to be. I removed the melted plastic plate and found the two wires were burnt along with the upholstery fabric behind it. They were capped off with electrical tape by prev owner. I replaced the old tape with new and cut the wires above the fray which sparked. Any opinions as to where this wire might originate from or if it has a dedicated fuse? I'm not equipped to remove the entire wall. There is a 12V outlet that I pulled out to see if it was piggybacked, but it wasn't. Not feeling comfortable with the live wires laying in there (taped the ends).
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Old 09-19-2021, 01:24 PM   #2
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Posts: 3,800
It's highly unlikely that those wires are still energized since the short should have blown the fuse. If they were unfused, I would assume they would have continued to burn until something worse happened. You can tell for sure by removing the tape and checking with a voltmeter.

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Old 09-20-2021, 12:05 PM   #3
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So the general sportsmobile electrical lay out is two 30-amp circuits, one for the passenger side, and one for the driver side. The driver side also covers the front overhead area. The water pump, ceiling lights and some individual equipment have dedicated fuses for them off of it. Refrigerators, Heaters and radio circuits generally are fused at fuse box. The fans generally don't so the fuse protection would go back to the 30-amp circuit fusebox.

If the cutting the wire caused a spark, I suspect it is still energized. Also I would expect that you would have reported other devices not working. These power wires generally run behind the side wall to roof rail trim. Sportsmobile generally uses the crappy piggy back taps off of those wires. It would also be possible they transitioned off of the 12 volt socket you said was close,

If you do not track it back to the source, I would split the zip wire, and tape off the individual sides, or preferred use glue lined heat shrink to terminate.

This of course is their general wiring practice, no guarantees yours is wired this way, or hasn't been changed by the previous owner.

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Old 09-20-2021, 12:12 PM   #4
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Thank you Greg!
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burn, fan, live wire

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