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Old 05-18-2016, 12:44 PM   #11
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The main reason for the battery disconnect is to remove parasitic loads. This can be stuff that's "always on" like the CO detector and possibly the fridge, as well as for errors like mistakenly leaving an inside light or the radio on.

Landing gear isn't normally an issue because they normally have a switch that you can't "leave on." Same with slides and jacks. Also with the brake switch.
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Old 05-18-2016, 12:48 PM   #12
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Originally Posted by OswegoLion View Post
[[B] So when is battery turned off?
When the battery disconnect is engaged (disconnected) it typically is wired that all parasitic draws (things that consume power all the time) are off. It's OK to have things like the jacks and stabilizers always connected because they only draw current when in use (push a switch) and as such, won't drain the battery.

EDIT: sorry rockfordroo... typing at the same time!
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Old 05-18-2016, 01:19 PM   #13
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Does battery charge with disconnect flipped?

Don't speculate...
Just find out how your rig is set up.

Take a voltmeter and measure your battery voltage with the disconnect switch in the on and off positions.
When your batteries are charging, the voltage will always increase from when it is not charging.

Here is how to do this:
With disconnect in the off position measure the voltage at the battery.
Unplug your trailer/charger.
If the voltage drops, then your batteries are charging with the disconnect in the off position.
If the voltage stays the same, then your batteries do not charge with the disconnect in the off position.
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Old 05-18-2016, 01:47 PM   #14
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Originally Posted by larryandamy View Post
Don't speculate...

Just find out how your rig is set up.



Take a voltmeter and measure your battery voltage with the disconnect switch in the on and off positions.

When your batteries are charging, the voltage will always increase from when it is not charging.



Here is how to do this:

With disconnect in the off position measure the voltage at the battery.

Unplug your trailer/charger.

If the voltage drops, then your batteries are charging with the disconnect in the off position.

If the voltage stays the same, then your batteries do not charge with the disconnect in the off position.


What speculation?
If the battery is disconnected it cannot and will not charge period
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Old 05-18-2016, 03:23 PM   #15
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I have a crusader and with my battery cutoff switch off I can use the auto level control for jacks but not run the slides or anything else. Mine will charge the batteries even with it off. Mines a 2014 model. Just saying!
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Old 05-18-2016, 03:28 PM   #16
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...and the definitive answer is...it all depends, maybe and maybe not!
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Old 05-18-2016, 03:58 PM   #17
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Please show me a wiring diagram that makes it possible.


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Old 05-18-2016, 07:31 PM   #18
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Mine does. Both battery banks will charge and several other circuits are still live with the disconnect activated. And the chassis battery will charge with the chassis disconnect activated. See the attached drawing.
Attached Files
File Type: pdf Pathfinder Electrical.pdf (57.8 KB, 42 views)
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Old 05-18-2016, 09:50 PM   #19
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Quote:
Originally Posted by garythelen View Post
Mine does. Both battery banks will charge and several other circuits are still live with the disconnect activated. And the chassis battery will charge with the chassis disconnect activated. See the attached drawing.
The chassis disconnect is not in question it is a coach battery disconnect issue. The dwg you posted (only sheet 3 of 5 is posted) does show what appears to be an emergency start tie in and inverter power control along with other powered items but I couldn't find coach battery disconnect interface. Maybe I just can't see it or it is on one of the other sheets. And of course you may also be correct.
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Old 05-18-2016, 10:20 PM   #20
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Battery disconnect

Sorry about the orientation of the pdf, but it can be rotated by pressing Control, shift and + at the same time.
Actually the disconnect is shown, it's near the top of the page on the left side, but not labeled as such. It is marked BJ1 on the diagram.
I only included sheet 3 because it showed the power wiring. Sheet 1 and 2 are an overview of the whole motorhome showing where parts are located and the interconnection harnesses, sheet 4 is the front fuse box wiring, and sheet 5 is the parts list.
The battery isolation manager can be viewed here: precisioncircuitsinc.com/product/battery-isolation-manager-control-relay-225amp-continuous/
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