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01-31-2019, 01:00 PM
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#1
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Junior Member
Winnebago Owners Club
Join Date: Sep 2012
Posts: 15
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Battery disconnect. 2010 Vista 26P
The latching relay that connects the battery to the engine (not sure if it's called 'chassis' or 'coach') will not stay 'on'. The only rv repair guy here is lost. Where is this relay located and can the battery be connected to the engine side so I can start it? Then, until I can get it to a dealer, I'll just disconnect the battery to keep it from draining.
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Paul and Sandy Rybak, Topton, NC 2010 Winnebago Vista, 26P
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01-31-2019, 03:31 PM
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#3
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Senior Member
Join Date: Jul 2014
Posts: 35,439
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Quote:
Originally Posted by Paul03
The latching relay that connects the battery to the engine (not sure if it's called 'chassis' or 'coach') will not stay 'on'. The only rv repair guy here is lost. Where is this relay located and can the battery be connected to the engine side so I can start it? Then, until I can get it to a dealer, I'll just disconnect the battery to keep it from draining.
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Yes you can connect the two cables together to bypass it.
If it clunks when you hit the switch, you should be able to find it.
The 2 small terminals on the solenoid, marked " I " and " S ", get + to " I " and - to " S " for working one way, and the opposite polarity, for the other way. 
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01-31-2019, 04:22 PM
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#4
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Senior Member
Join Date: Jun 2018
Location: Los Angeles area
Posts: 1,416
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Quote:
Originally Posted by Paul03
The latching relay that connects the battery to the engine (not sure if it's called 'chassis' or 'coach') will not stay 'on'. The only rv repair guy here is lost. Where is this relay located and can the battery be connected to the engine side so I can start it? Then, until I can get it to a dealer, I'll just disconnect the battery to keep it from draining.
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"Chassis", "coach" and "engine" battery are all common terms for the battery that runs the motive parts of a motor home. "House" seems to the the term used for the residential battery.
You can find those latching relays on ebay and amazon, or in the parts bin at any RV store. I've seen them with and without fuse holders on the side.
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Semi-retired technogeek...electronics / computer / 2-way / ham radio... WA6ILQ (45+years)
1985 Fleetwood 32' Southwind (Chev P30/454/TH400), dubbed "Lazarus" by friends... I resurrected it from the dead...
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01-31-2019, 04:27 PM
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#5
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Senior Member
Join Date: Jul 2014
Posts: 35,439
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Quote:
Originally Posted by AnotherMike
"Chassis", "coach" and "engine" battery are all common terms for the battery that runs the motive parts of a motor home. "House" seems to the the term used for the residential battery.
You can find those latching relays on ebay and amazon, or in the parts bin at any RV store. I've seen them with and without fuse holders on the side.
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Coach battery is synonymous with House battery. It runs things inside the coach.
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01-31-2019, 05:37 PM
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#6
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Senior Member
Join Date: Apr 2017
Posts: 436
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The disconnect relay is a fairly common component. I'd expect any 'RV' repairman worth a salt to be able to diagnose and repair or replace. Good luck.
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02-01-2019, 09:09 AM
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#7
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Junior Member
Winnebago Owners Club
Join Date: Sep 2012
Posts: 15
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Quote:
Originally Posted by WinnieView
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I did, 31 views 0 replies.
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Paul and Sandy Rybak, Topton, NC 2010 Winnebago Vista, 26P
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02-01-2019, 10:27 AM
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#8
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Senior Member
Join Date: Aug 2015
Posts: 6,972
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Paul-
According to the Winnebago wiring diagrams for your coach (link here), it is equipped with a "MOBAC" to provide the battery control and interconnection functions. The MOBAC is mounted behind the chassis electrical panel, which itself is in the compartment in front of the entry steps.
Read this post (from this thread) for links to information on the MOBAC. Read this thread, too.
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Mark
2008 Holiday Rambler Admiral 30PDD (Ford F-53 chassis)
2009 Honda Fit Sport
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02-02-2019, 11:20 AM
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#9
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Junior Member
Winnebago Owners Club
Join Date: Sep 2012
Posts: 15
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Quote:
Originally Posted by l1v3fr33ord1
Paul-
According to the Winnebago wiring diagrams for your coach (link here), it is equipped with a "MOBAC" to provide the battery control and interconnection functions. The MOBAC is mounted behind the chassis electrical panel, which itself is in the compartment in front of the entry steps.
Read this post (from this thread) for links to information on the MOBAC. Read this thread, too. |
That's exactly what I needed, thanks! Now I understand how different this is than the stand alone solenoids.
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Paul and Sandy Rybak, Topton, NC 2010 Winnebago Vista, 26P
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