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Old 01-08-2017, 03:38 PM   #1
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Class A Trail-Lite

My motor home manual states that I have a battery disconnect,what would I be looking for to find it

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Old 01-08-2017, 04:01 PM   #2
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No idea about your specific unit. In general you will find the large lead from the house battery + terminal goes to a large can type relay. That is the disconnect. Most units I have seen have a rocker switch by the door that toggles the relay on or off. The other common place seems to be on the dash somewhere. It might be labeled as storage or something like that.

The easiest way I have found to check the state of the relay is to check the battery with a voltmeter. It needs to be around 12 VDC as it powers the relay. Turn on a light in the house part of the MH. Disconnect the power plug. If the light goes out then the relay is open. Try any switches that are not labeled and you think might be the switch.

I hope that helps.

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Old 01-08-2017, 04:55 PM   #3
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Did it refer to it as a "Battery Disconnect" or to a "12 volt disconnect", there is a difference.
A 12 volt disconnect will by by the front door. a.k.a. Salesman switch
A battery disconnect, if you have one, would most certainly be located in the nattery compartment. Not all MH came with a battery disconnect.
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Old 01-09-2017, 06:18 AM   #4
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I would have thought that if they mention it in the manual they would also say where it is and how to operate it.
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Old 01-09-2017, 07:05 AM   #5
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For most of us the battery disconnect is the 12 V disconnect/salesman's switch.

I take the issue as a semantics question that used to be an issue but no longer seems to be one as society changes.

FWIW if there is a manual disconnect I would look for it the same way. Follow the big wire from the + post on the battery. Some folks put them in the - lead.
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Old 01-09-2017, 01:14 PM   #6
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bevjoe, perhaps we should ask you what your intention would be by using the "battery disconnect" switch?

As you can tell by the responses, there are two switches that might be found in a motorhome that can be considered "battery disconnect" switches. Until you can clarify and somebody with the same or similar coach as yours responds, we are all kind of guessing in our responses.

The most common and I'll go out on a limb to say it's the one that is referred to in your manual, is a switch that disconnects 12v power to the house portion of the coach ...or what some have been referring to as the "salesman's switch."

There also can be a chassis battery disconnect. If you do have this switch (I going to guess you don't), it disconnects the starting (engine) battery so there is no parasitic draw when not in use.

For your house battery disconnect switch (until somebody with the same coach responds), look around the doorway area for a toggle switch, a red rotary switch, or some of the manufactures used the kind of switch pictured below in older RVs.


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