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Old 11-18-2023, 06:12 PM   #1
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Brand: Thor Motor Coach
State: Ontario
Posts: 8
THOR #29142
Mystery Switch

We have a '13 Tuscany 45 LT. In the rear bathroom, back wall , next to toilet is a toggle switch that illuminates red when on. Nobody seems to know what it is. I thought an engine preheater, or possibly a black, grey or freshwater heater. Any idea?

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Old 11-18-2023, 09:01 PM   #2
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Brand: Entegra
Model: Accolade 37TS
State: South Dakota
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THOR #1469
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Originally Posted by Mike n Marty View Post
We have a '13 Tuscany 45 LT. In the rear bathroom, back wall , next to toilet is a toggle switch that illuminates red when on. Nobody seems to know what it is. I thought an engine preheater, or possibly a black, grey or freshwater heater. Any idea?
If Iím not mistaken, from previous posts, that is your engine block heater. I could be wrong so you may want to search the forum because it has been discussed before.
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Old 11-19-2023, 12:42 PM   #3
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Brand: Thor Motor Coach
State: Missouri
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Absolutely engine block heater

Check your panel for amp draw with the switch on and off.

If you don’t see about 900 watts draw, your element is burnt-out or not connected.
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