I was going to say tank heater, as in holding tank heater(s). But I'm not sure (have never had tank heaters) that a lowly 5 amp fuse sounds right. I kinda wouldn't think the CO detector would be on the same circuit anyway,,, but who knows!
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03 Itasca Sunova, Workhorse P32 with the 8.1 and 4L85-E
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