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Old 09-21-2021, 02:28 PM   #1
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Mouse damage! What are my options?

Hi all,

I have a 1988 Excella, which is in reasonable shape, and has had a few mods by the PO over the years.

However, this winter we had some mice get in and they have chewed through several of the wires. Of the ones I can see, they chewed through the 12V wire to the power antenna lift control, which was no biggie to repair.

However, my shore power has started to trip the main breaker. It will run for a short while, but will then trip the breaker in my house.

Obviously, this is not good news. :-(

Is there any simple way to identify where the short might be occurring and then isolate and repair that section? Even if I did that, do I run the risk of finding and fixing one spot now and then finding they have eaten another wire and I have to go through the process again?

Am I into possibly having to re-wire the whole thing?

I am debating a full reno anyways, but was hoping I could avoid having to take the skins off.

Any thoughts or advice would be very welcome.


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Old 09-21-2021, 03:57 PM   #2
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Without putting eyes on the wires, there is no way to tell what's what. An inspection camera might help in this regard.

Best guess: yes, you are going to do more than a little bit of re-wiring.

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Old 09-21-2021, 04:31 PM   #3
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You may have to pull the belly pan. On the 3 Airstreams I have owned the belly pan was full of mouse nests, and that's where they may've chewed the wires.
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Old 09-21-2021, 04:38 PM   #4
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In the trade we separate the concealed sections of the circuits at all the junctions then put a megohmmeter (megger) on each section which basically tests the insulation by putting a high voltage on the conductors. The poor man's method involves separating the sections as described and checking each section for shorts to ground and shorts to neutral with an ohm meter, but this will only expose what is currently shorted and not what is waiting to happen. The even poorer man's method, but perhaps the one with the best outcome, involves removing panels and sections of the trailer for visual inspection. (This is something you want another trade or yourself to do, you don't want electricians tearing apart a trailer, bring them in for the wiring if needed)
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