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Old 08-31-2012, 06:29 PM   #1
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Battery disconnect

I have a "90" fleetwood jamboree and the main battery has a power disconnect on it. What would the reason be? Anybody know?
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Old 08-31-2012, 06:48 PM   #2
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Probably to keep the battery charged. May have a large parasitic load. I isolate my batteries if I expect to keep the unit in storage greater than a week. JM2...
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Old 08-31-2012, 06:48 PM   #3
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Parasitic loads. Your radio, engine computer, CO detector, etc. draw small amounts of power even when off. Without a battery disconnect, sitting for a few weeks, as most MH do, would draw the battery down.
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Old 08-31-2012, 07:43 PM   #4
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Thanks. On the subject of batteries, something is drawing the secondary down the last 2 days all of a sudden. Everything I can think of is off. I even shut the switch for gen/direct connect off thinking it was something in the gen doing it. Another question is, what would the auxiliary start button be for? If primary dies the secondary will start the rv? I'm an rv newbie so I am going to probably have lots of questions soon. All the help is appreciated. Thanks!
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Old 08-31-2012, 07:48 PM   #5
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The auxiliary start button will connect your chassis battery(s) to the house battery(s) to 'jump start' the engine. It is a spring loaded switch, only connecting the two systems while being held down. (The switch is actually wired to a heavy duty solenoid that actually connects the two systems)
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Old 09-01-2012, 06:48 AM   #6
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Check your storage bays and see if you left a light on.
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Old 09-01-2012, 07:27 AM   #7
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Quote:
Originally Posted by mgscott4 View Post
Check your storage bays and see if you left a light on.
x2, I had the same problem and found a storage bay light on that I did not know I had. I checked after dark and found it behind some stacked items.
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Old 09-01-2012, 07:46 AM   #8
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Also if you have an outside entertainment system with a Jensen radio, check to make sure it is not left on Jensen radios are notorious for just coming on at their will, as mine does, and that will run your batteries down for sure
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Old 09-01-2012, 02:12 PM   #9
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Thanks guys! Will have to check when I get home from work.
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Old 09-03-2012, 03:08 PM   #10
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I pulled my negative cables off and ran my meter between batt negative and cables and have 12v going through, if I remember right that means I have a short right? I hear a solenoid on my lp tank clicking when I connect the cables back, is that normal?
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Old 09-03-2012, 03:38 PM   #11
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Doesn't mean a short, just that 12 v is flowing. Parasitic loads from CO, LP gas detector, etc. You'll need to trace the cables from the batteries. The positive should go to a solenoid that controls power to the rest of the RV. Sounds like that solenoid could be bad or dirty contacts.
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Old 09-03-2012, 04:55 PM   #12
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Ok, I did an amp draw and I was pulling 0.54 and I disconnected the relay on the lp tank and now 0.00. So I assume I have to trace back the circuit to see what's energizing the relay. I compared it to main battery which is 0,01 so I assume I did it right. I am fairly decent with electronics but sometimes my brain doesn't work. Lol
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Old 09-03-2012, 06:37 PM   #13
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Sounds like you found it.

It could have something to do with the Carbon monoxide monitor in the coach. They are mounted low, net to the floor.
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Old 09-05-2012, 02:53 PM   #14
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Sounds like you found it.

It could have something to do with the Carbon monoxide monitor in the coach. They are mounted low, net to the floor.
Exactly what it is, the alarm keeps going off no matter what. I pull the lead off of the relay on the tank which I found out is a cutoff if the alarm goes off it shuts the gas off for you. So with the alarm off the monitor still sending message to the cutoff. Looking into buying a new one, not very cheap though. I can always buy one at lowes or home depot but I would defeat the safety issue.
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