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Old 08-13-2012, 12:13 PM   #1
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Question Battery Draining & Fuse Blowing


I have a Grey Wolf 21RR Toy Hauler, we have used it for 2 trips and both times we blow the fuse that is for the last two ceiling lights, outside light, and door/steps light. Both times we were not in the camper when it happened. The second time I know the lights were turned off. Not sure what's going on?

Second issue is the battery is dead every time we use or visit the camper. It always recharges when we plug it into the tow vehicle but seems to me it shouldn't drain each time we unplug. Before we store we turn off all breakers and switches. Any ideas would be appreciated!

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Old 08-13-2012, 12:36 PM   #2
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First off, plugging into the tow vehicle will not "recharge that battery." It would take a week with an alternator to recharge a dead deep discharge battery. See attached PDF on alternators and deep discharge batteries.

1) The fact a fuse is blowing means you have a short somewhere in that circuit.
2) The fact that it does not do it immediately means it is intermittent and is most likely a "rub" that has worn away the insulation.
3) The fact that it blows even when the lights are off means it is between the fuse and the main switch.

You will need to locate the rub and tape it off.
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Old 08-13-2012, 01:33 PM   #3
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As far as the battery going dead you have small parasitic draws that the breakers have nothing to do with. the breakers are for 110 v.
Co detector is ALWAYS on 1 amp
Propane detector is ALWAYS on 1 amp
Radio light is always on . <1 amp

You need to take cables off of battery or install a battery disconnect switch.
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Old 08-13-2012, 08:55 PM   #4
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Thanks everyone. Found out from the manufacturer that they made an error when drilling the holes for the side door contacts it was only for toy haulers made during a certain time period, that's what's causing the fuse to blow.

The battery now makes sense, the sensor's hadn't occurred to me.
2012 - Grey Wolf 21RR Toy Hauler
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battery, fuse, drain

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