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Old 07-02-2018, 07:39 PM   #1
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Brand: Thor Motor Coach
State: Arizona
Posts: 10
Un-locatable Fuse

All, I am having an issue with no power to the rear stabilizing jacks. I called Thor customer service and they sent me a nice wiring layout diagram. I have attached it. The fuse I am looking for is marked BB on the diagram and is a red, 15 amp type II fuse. Thor told me that BB means it's in the bedroom, but I'll be damned if I can find it and I've looked everywhere. Coach is a 2018 Quantum RC25 on an E-450 Chassis. Can anybody tell me where this additional fuse could be? In the diagram it is listed in the 12 volt breaker box.

Thanks!
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File Type: pdf 20185 Quantum RC25 Electrical LayoutTEE2539-11.pdf (154.2 KB, 38 views)
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Old 07-02-2018, 08:27 PM   #2
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Model: Hurricane 31S
State: California
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Originally Posted by AZ Derrick View Post
All, I am having an issue with no power to the rear stabilizing jacks. I called Thor customer service and they sent me a nice wiring layout diagram. I have attached it. The fuse I am looking for is marked BB on the diagram and is a red, 15 amp type II fuse. Thor told me that BB means it's in the bedroom, but I'll be damned if I can find it and I've looked everywhere. Coach is a 2018 Quantum RC25 on an E-450 Chassis. Can anybody tell me where this additional fuse could be? In the diagram it is listed in the 12 volt breaker box.

Thanks!
in the converter box right side next to the 120 circuit breakers is 12v fuses
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Old 07-02-2018, 08:35 PM   #3
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That's not it. There is another breaker box somewhere in the coach. I've got Thor on the phone and they are working on it.
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Old 07-02-2018, 08:50 PM   #4
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Originally Posted by AZ Derrick View Post
That's not it. There is another breaker box somewhere in the coach. I've got Thor on the phone and they are working on it.
they also install their own fuse box and put it down by the drivers left foot almost out of reach
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Old 07-03-2018, 09:26 AM   #5
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Model: ACE 32.1
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Look for something like this. It's a 12V manual circuit breaker, some call it a fuse, under your bed. The drawing lists it as a breaker. Look for a popped pin, color could be one of several, on the side.Click image for larger version

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Old 07-03-2018, 12:09 PM   #6
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Brand: Thor Motor Coach
Model: Four Winds 28z
State: Florida
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Un-locatable Fuse

I have exactly that switch in my bathroom it is a circuit breaker for my chassis batteries. Mine is located next to my sink on the back wall. I had no idea what it was either in could not see that button on the side. Thanks for giving me the name of that switch


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Old 07-23-2018, 10:27 AM   #7
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ever find that elusive breaker? not that mine would have it in the same place !
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Old 07-23-2018, 01:57 PM   #8
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Yes, its under the mattress, against the wall.
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