Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-11-2018, 11:10 AM   #1
Winnebago Owner
 
Join Date: Apr 2018
Location: Roosevelt, MN
Posts: 55
House charging while driving

I have seen mention in other forum topics saying that the boost relay gets energized to charge the house batteries when the engine is running but looking at the wiring diagrams ('96-97 Adventurer) I can see nothing connecting this to the ignition. In fact, I can't even find the ignition switch or alternator on any of the automotive diagrams. Where are they?
n0ukf is offline   Reply With Quote
Old 05-13-2018, 11:24 AM   #2
Winnebago Owner
 
Join Date: Oct 2015
Location: Brighton, MI
Posts: 133
Not sure on the wiring diagrams. As far as engine alternator charging the house batteries, yes it should. Once the chassis battery is full charged then it should start charging coach batteries.
__________________
Hank & Lynda
2003 Winnebago Adventurer 35U
70ChevelleSS is offline   Reply With Quote
Old 05-13-2018, 06:43 PM   #3
Winnebago Owner
 
Join Date: Apr 2018
Location: Roosevelt, MN
Posts: 55
We tested this yesterday and it does charge, but I still want to see a diagram that includes the ignition and automotive charging system.
n0ukf is offline   Reply With Quote
Old 05-15-2018, 08:10 AM   #4
Winnebago Owner
 
Join Date: Oct 2015
Location: Brighton, MI
Posts: 133
You have a battery control circuit board somewhere, typically close to the batteries. This is where the battery disconnect solenoid(s) are as well as the boost solenoid/relay. House and chassis batteries are connected to opposing sides of the relay. Find the battery control center and see what type circuit board you have. Then you should be able to find a schematic for it.
__________________
Hank & Lynda
2003 Winnebago Adventurer 35U
70ChevelleSS is offline   Reply With Quote
Old 05-15-2018, 03:21 PM   #5
Just Trying to Help
 
Join Date: Aug 2015
Posts: 164
n0ukf-

Your initial post covers two topics.

1) Location of automotive wiring details
The Winnie Automotive Wiring Diagram (typical for 1997 Adventurer 34 here) is intended to show wiring that Winnie provides once it has picked up the signals from the chassis builder. Put another way, the Winnie diagrams are not meant to take the place of the chassis builder's design and service documentation. Note also that the Winnie diagrams can cover multiple chassis builders in a single diagram set.

2) How the AUX BOOST (AUX START) solenoid gets ignition-switched power
The place to always start looking is the AUX BOOST solenoid. On the Automotive Wiring Diagram listed above, for the Chevy chassis the solenoid is on Sheet 1, Zone C-3 (note: Sheet 1 is page 2 of the PDF). The "pickup" signal for the solenoid comes on circuit "LR." (How would you know? It always comes on circuit "LR." The secret decoder ring- link here- says so.) Follow "LR" and you'll eventually come to the AUX BOOST/AUX START switch. That switch has two leads. One, "LS," comes from the chassis batteries. The second, "KE" is an ignition-switched chassis battery source. Follow "KE" and you'll eventually see where it gets its 12V- often from a fuse in the chassis-supplied fuse panel.

So, the switch works this way: In one position, "KE" supplies "LR" when the ignition is on, activating the "AUX BOOST/AUX START" solenoid and tying the two battery banks together. In the other position, 12V from the chassis batteries via "LS" supplies "LR," with the same effect. One has to assume the switch is in default position for "KE," and momentary for "LS," to make things work as expected.

Although "KE" may have a different source for each chassis (Chevy, Ford, Freightliner, etc.), the circuit is the same once it hits the switch.
__________________
Mark
2008 Holiday Rambler Admiral 30PDD (Ford F-53 chassis)
2009 Honda Fit Sport
l1v3fr33ord1 is offline   Reply With Quote
Old 05-15-2018, 10:36 PM   #6
Winnie-Wise
 
powercat_ras's Avatar
 
Join Date: May 2015
Location: Manhattan, Kansas USA
Posts: 467
On a 96-97 there should be a large battery isolation relay (BIR) that is controlled either by manuall forcing to operate from a dash switch labeled battery boost or similar, and by a control module that is voltage based. If there is charging voltage over 12.8 volts or so on one side and the other side does not have charging voltage ( 12.6 volts or less ) then the module will operate the BIR. You likely have heard the loud "clunk" it makes when it operates and when it releases, that you may be able to find it by following the sound.

Generally, Winnebago locates the BIR and the control module within a Chassis Electrical Box that has large number of circuit breakers on the front of the box.
__________________
Randy - Manhattan, Kansas
2015 Vista 27N
2016 Honda HR-V
powercat_ras is online now   Reply With Quote
Old 05-16-2018, 04:51 AM   #7
Just Trying to Help
 
Join Date: Aug 2015
Posts: 164
Randy-

Neither the wiring diagrams nor the owner's manual for the 1997 Adventurer indicate there is a "control module" that connects house and chassis battery banks for combined charging.

You are correct in that there is a large solenoid, which you call a "battery isolation relay" and I call an AUX BOOST/AUX START solenoid in post #5. As described in that post, the solenoid gets its activation signal from the switch, only.

Modern coaches often have cross-charging electronics. Given the OP's coach is 20 years old, it's possible a prior owner has added an aftermarket cross-charging device to his coach.
__________________
Mark
2008 Holiday Rambler Admiral 30PDD (Ford F-53 chassis)
2009 Honda Fit Sport
l1v3fr33ord1 is offline   Reply With Quote
Old 05-18-2018, 02:28 AM   #8
Winnebago Owner
 
Join Date: Apr 2018
Location: Roosevelt, MN
Posts: 55
I know where the AUX START and house battery disconnect relays are, "under the hood" on the driver's side. I've had the box open once so far to add a connection for solar panels at the front end of the coach. I'm planning to also add a solar connection to the rear end to give us placement options (which end will be pointing south?) when boondocking. No, we are not going to mount fragile solar panels on the roof where hail can get at them. On the ground we can quickly move them under-cover if needed, and store them in the basement off-season.
n0ukf is offline   Reply With Quote
Old 05-25-2018, 08:27 AM   #9
Winnebago Master
 
jerichorick's Avatar
 
Join Date: Jun 2013
Location: Full-timer/volunteer w/SOWERS
Posts: 2,176
Could you please give us a bit more info about your rig? What model is it? What Model Year? Be specific since there are so many 34' models to look at wiring diagrams on.
__________________
Rick & Melissa Young & Dawson (RIP), 2011 Meridian 40U, FL XCL, ISL 380HP/DEF, Al 3000 MH, 2014 Honda CR-V, SMI AF1, Blue Ox TruCenter & tow equip.,EEZTire TPMS.
Servants On Wheels Ever Ready. Best job we ever paid to do . (full time volunteers)
jerichorick is offline   Reply With Quote
Old 05-25-2018, 09:55 AM   #10
Winnebago Master
 
tderonne's Avatar
 
Join Date: Dec 2003
Location: Motor City, Mich
Posts: 721
Quote:
Originally Posted by n0ukf View Post
I know where the AUX START and house battery disconnect relays are, "under the hood" on the driver's side.
The AUX START relay is the isolator/connection relay. It's triggered by the aux start switch, or ignition power, it's that simple. They are known to fail, so good to know where it is.

As for where you find them in the diagrams. The Ford wiring is not in the Winnebago drawings. But you should be able to find a wire from the relay, looks like it'd be circuit LR that powers the relay from the aux switch. Circuit KE, ignition power, is at the switch when it isn't pressed.
__________________
Tim.

tderonne is online now   Reply With Quote
Old 05-26-2018, 07:40 PM   #11
Winnebago Owner
 
Join Date: Apr 2018
Location: Roosevelt, MN
Posts: 55
Quote:
Originally Posted by jerichorick View Post
Could you please give us a bit more info about your rig? What model is it? What Model Year? Be specific since there are so many 34' models to look at wiring diagrams on.
'97 Adventurer 34WA ('96 Chevy chassis, 7.4l TBI)

Quote:
Originally Posted by tderonne View Post
The AUX START relay is the isolator/connection relay. It's triggered by the aux start switch, or ignition power, it's that simple. They are known to fail, so good to know where it is.

As for where you find them in the diagrams. The Ford wiring is not in the Winnebago drawings. But you should be able to find a wire from the relay, looks like it'd be circuit LR that powers the relay from the aux switch. Circuit KE, ignition power, is at the switch when it isn't pressed.
I can find the relays on the diagrams (body and chassis) but I have not seen any ignition switch or alternator (or other engine side wiring) on the chassis pages.
n0ukf is offline   Reply With Quote
Old 05-26-2018, 10:00 PM   #12
Winnebago Watcher
 
Join Date: Sep 2017
Location: Eagle River, AK
Posts: 3
Quote:
Originally Posted by powercat_ras View Post
On a 96-97 there should be a large battery isolation relay (BIR) that is controlled either by manuall forcing to operate from a dash switch labeled battery boost or similar, and by a control module that is voltage based. If there is charging voltage over 12.8 volts or so on one side and the other side does not have charging voltage ( 12.6 volts or less ) then the module will operate the BIR. You likely have heard the loud "clunk" it makes when it operates and when it releases, that you may be able to find it by following the sound.

Generally, Winnebago locates the BIR and the control module within a Chassis Electrical Box that has large number of circuit breakers on the front of the box.
Randy can you speak a bit more about this? My 2018 hasn't been charging the house batteries except for the first start of the morning and now I wonder if this is the culprit. Are you saying that if the coach batteries are more than 12.6v, the solenoid will not engage? I've had situations with lower voltage where I started and ran the engine for a bit and after dumping when I restarted the engine the coach batteries didn't receive a charge.

GJ
GearJerker is offline   Reply With Quote
Old 05-29-2018, 08:57 AM   #13
Winnebago Master
 
jerichorick's Avatar
 
Join Date: Jun 2013
Location: Full-timer/volunteer w/SOWERS
Posts: 2,176
Quote:
Originally Posted by n0ukf View Post
'97 Adventurer 34WA ('96 Chevy chassis, 7.4l TBI)


I can find the relays on the diagrams (body and chassis) but I have not seen any ignition switch or alternator (or other engine side wiring) on the chassis pages.

Thank you. Look at these two diagrams: http://www.winnebagoind.com/diagram/1997/123182.pdf


http://www.winnebagoind.com/diagram/1997/123808.pdf



I believe the BATTERY MODE relay is the failing component. This is what I found at Amazon that will work for you: https://smile.amazon.com/DB-Electric...minal+solenoid


Have had to replace a couple of these on other coaches.
__________________
Rick & Melissa Young & Dawson (RIP), 2011 Meridian 40U, FL XCL, ISL 380HP/DEF, Al 3000 MH, 2014 Honda CR-V, SMI AF1, Blue Ox TruCenter & tow equip.,EEZTire TPMS.
Servants On Wheels Ever Ready. Best job we ever paid to do . (full time volunteers)
jerichorick is offline   Reply With Quote
Old 05-30-2018, 03:37 PM   #14
Winnebago Owner
 
Join Date: Oct 2014
Location: Cypress River Manitoba
Posts: 77
My 'Boost' solenoid failed last year. It made the clunking sound and would on occasion allow the house battery to get a bit of a charge. Mostly it would not though.
I replaced mine with an Echlin ST-95. If I remember correctly there is another Echlin ST-?? with gold contacts and a bit higher amp rating. Good thing about the Echlin is you can get one fairly locally
Stan
__________________
2004 Itasca Sunrise W22 chassis GM 8.1 Allison 1000 Towing a 2007 Chevy Cobalt four wheels down.
Switchflicke is offline   Reply With Quote
Reply

Tags
charging


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
House Batteries Not Charging while driving? UPDATED 3/15/06 Old Snipe Electrical | Charging, Solar and Electronics 15 04-28-2017 10:29 AM
House batteries not charging while driving bobpie Electrical | Charging, Solar and Electronics 20 08-04-2013 05:01 PM
Generator Cut Off While Driving (first longer trip) flashajt Electrical | Charging, Solar and Electronics 14 11-24-2007 06:01 AM
Propane-- on or off while driving? Bob and Vicki General Maintenance and Repair 21 11-03-2006 04:56 AM
House battery charging while driving. LK23 Electrical | Charging, Solar and Electronics 9 05-29-2006 07:27 PM

» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Winnebago Industries or any of its affiliates. This is an independent, unofficial site.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:10 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.