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Old 07-06-2018, 11:34 PM   #1
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Brand: Thor Motor Coach
State: Florida
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THOR #7494
House Battery help 2017 Vegas 25.5

This evening I replaced my house batteries and when installing the second battery one of the battery cables was hot and arced on the metal battery box. It tripped the relay in the battery compartment. I completed the connections and reset the switch and use/store switch doesn't work.

Is there any other relay or fuse that could have tripped?

Thanks
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Old 07-07-2018, 12:20 AM   #2
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THOR #6411
There is a fuse on the relay. It is usually an the very back of the house battery compartment (or at least it is on mine).
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Old 07-07-2018, 04:13 AM   #3
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THOR #8180
So first check the battery output with a meter and make sure you have 12VDC. Trace the voltage along the circuit to the ckt breaker, the fuse and to the relay...the use / store switch is connected to a latching relay. Its possible you fried that relay if all other appears ok.
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Old 07-07-2018, 01:52 PM   #4
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There is a fuse for the use/store latching relay. This sometimes blows with that kind of spike. It will be between the use/store switch and the latching relay. Ours was about a foot from the relay. Some latching relays have the fuse/socket built in.
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