Home » Public Forums » GMCnet » [GMCnet] Onan wiring help
| [GMCnet] Onan wiring help [message #79134] |
Sat, 03 April 2010 16:04  |
Len Novak
Messages: 676
Registered: February 2004
Location: Las Vegas, NV
Karma: -3
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Senior Member |
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The remote start/stop switch inside the coach just quit. No start, no stop,
nothing. I can start and stop the onan from the controls on the generator
itself. I found a trailer connector that seems to connect the remote switch
to the Onan just in back of the power drawer. We sort of as it
disintegrated in my hands as I pulled it apart. There are four wires
coming from the coach red, blue, green, and brown that are supposed to line
up with four wires coming from the Onan..all white. Does anyone have a
diagram as to what or how the wires are supposed to match up?
On a side note I lost all power to the batt, fresh water, black water, and
propane indicators. Nothing, zip, nada.
Cheers,
Len and Pat
78 Kingsley, The Beast II with dash lights that work
Fallbrook, CA
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
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Len and Pat Novak
1978 GMC Kingsley
The Beast II with dash lights that work and labels you can see!
Las Vegas, NV new email: B52sRule@Gmail.com
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
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| Re: [GMCnet] Onan wiring help [message #79138 is a reply to message #79134] |
Sat, 03 April 2010 16:43  |
George Zhookoff
Messages: 398
Registered: December 2004
Location: Snellville, GA
Karma: 6
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Senior Member |
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Check the GMC photo album. There's a slide or two about splicing wires instead of the plug.
I spliced the wires.
George Zhookoff
78 EL II
Atlanta
----- Original Message -----
From: gmclist-bounces@temp.gmcnet.org <gmclist-bounces@temp.gmcnet.org>
To: gmclist@temp.gmcnet.org <gmclist@temp.gmcnet.org>
Sent: Sat Apr 03 17:04:53 2010
Subject: [GMCnet] Onan wiring help
The remote start/stop switch inside the coach just quit. No start, no stop,
nothing. I can start and stop the onan from the controls on the generator
itself. I found a trailer connector that seems to connect the remote switch
to the Onan just in back of the power drawer. We sort of as it
disintegrated in my hands as I pulled it apart. There are four wires
coming from the coach red, blue, green, and brown that are supposed to line
up with four wires coming from the Onan..all white. Does anyone have a
diagram as to what or how the wires are supposed to match up?
On a side note I lost all power to the batt, fresh water, black water, and
propane indicators. Nothing, zip, nada.
Cheers,
Len and Pat
78 Kingsley, The Beast II with dash lights that work
Fallbrook, CA
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
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| Re: [GMCnet] Onan wiring help [message #79143 is a reply to message #79138] |
Sat, 03 April 2010 17:08 |
Len Novak
Messages: 676
Registered: February 2004
Location: Las Vegas, NV
Karma: -3
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Senior Member |
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George,
Thanks, that is the plan. Problem is what wire gets spliced where?
Cheers,
Len and Pat
78 Kingsley, The Beast II with dash lights that work
Fallbrook, CA
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of George Zhookoff
Sent: Saturday, April 03, 2010 2:43 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Onan wiring help
Check the GMC photo album. There's a slide or two about splicing wires
instead of the plug.
I spliced the wires.
George Zhookoff
78 EL II
Atlanta
----- Original Message -----
From: gmclist-bounces@temp.gmcnet.org <gmclist-bounces@temp.gmcnet.org>
To: gmclist@temp.gmcnet.org <gmclist@temp.gmcnet.org>
Sent: Sat Apr 03 17:04:53 2010
Subject: [GMCnet] Onan wiring help
The remote start/stop switch inside the coach just quit. No start, no stop,
nothing. I can start and stop the onan from the controls on the generator
itself. I found a trailer connector that seems to connect the remote switch
to the Onan just in back of the power drawer. We sort of as it
disintegrated in my hands as I pulled it apart. There are four wires
coming from the coach red, blue, green, and brown that are supposed to line
up with four wires coming from the Onan..all white. Does anyone have a
diagram as to what or how the wires are supposed to match up?
On a side note I lost all power to the batt, fresh water, black water, and
propane indicators. Nothing, zip, nada.
Cheers,
Len and Pat
78 Kingsley, The Beast II with dash lights that work
Fallbrook, CA
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
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Len and Pat Novak
1978 GMC Kingsley
The Beast II with dash lights that work and labels you can see!
Las Vegas, NV new email: B52sRule@Gmail.com
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
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| Re: [GMCnet] Onan wiring help [message #79145 is a reply to message #79143] |
Sat, 03 April 2010 17:28 |
GMCWiperMan
Messages: 1248
Registered: December 2007
Karma: 1
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Senior Member |
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Len,
The Onan service manual is at bdub.net. But here's where they go:
Control Inside Panel
Boad Pin Connnection
1 (Ground) Switch COM
2. Switch STOP
3. Switch START
Coil + Run Time Meter
With this information, you should be able match your colors inside to see
where they go outside.
Ken H.
Americus, GA
'76 X-Birchaven
www.gmcwipersetc.com
On Sat, Apr 3, 2010 at 6:08 PM, Len <B52Rule@adelphia.net> wrote:
> George,
>
> Thanks, that is the plan. Problem is what wire gets spliced where?
>
> Cheers,
>
> Len and Pat
>
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| Re: [GMCnet] Onan wiring help [message #79166 is a reply to message #79145] |
Sat, 03 April 2010 20:03 |
Len Novak
Messages: 676
Registered: February 2004
Location: Las Vegas, NV
Karma: -3
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Senior Member |
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Ken,
Thanks! I'll play with that tomorrow. I spent the better part of the day
at the Men's Mall trying to remove a steering wheel from an Astro Van. So
far the van is winning. Lots of Astro and Jimmy steering wheels with the
GMC logo available but my wheel puller can't budge them.
I'm still chasing power to the gauge indicators. I pulled the panel and
there is no 12 dc to be found anywhere. All the fuses check out.
Cheers,
Len and Pat
78 Kingsley, The Beast II with dash lights that work
Fallbrook, CA
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Ken Henderson
Sent: Saturday, April 03, 2010 3:28 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Onan wiring help
Len,
The Onan service manual is at bdub.net. But here's where they go:
Control Inside Panel
Boad Pin Connnection
1 (Ground) Switch COM
2. Switch STOP
3. Switch START
Coil + Run Time Meter
With this information, you should be able match your colors inside to see
where they go outside.
Ken H.
Americus, GA
'76 X-Birchaven
www.gmcwipersetc.com
On Sat, Apr 3, 2010 at 6:08 PM, Len <B52Rule@adelphia.net> wrote:
> George,
>
> Thanks, that is the plan. Problem is what wire gets spliced where?
>
> Cheers,
>
> Len and Pat
>
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Len and Pat Novak
1978 GMC Kingsley
The Beast II with dash lights that work and labels you can see!
Las Vegas, NV new email: B52sRule@Gmail.com
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
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| Re: [GMCnet] Onan wiring help [message #79182 is a reply to message #79166] |
Sat, 03 April 2010 21:13 |
 |
mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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With the 4-pin connector "disconnected" you will not see and power at the generator panel.
The power for the switch comes from the generator (4 of the 6 connectors on the top of the control board.) There should be 12v on both the start and stop wires. The switch connects these to ground to activate the function. (IE: Grounding the start wire will start the generator.) The 12v listed below is for the run time meter and gen running light. It is not there when the generator is not running. (Most inside prime switches apply 12v to this line, back-feeding power to run the fuel pump.)
| b52rule wrote on Sat, 03 April 2010 18:03 |
... I'm still chasing power to the gauge indicators. I pulled the panel and there is no 12 dc to be found anywhere. All the fuses check out.
-----Original Message-----
The Onan service manual is at bdub.net. But here's where they go:
Control Inside Panel
Boad Pin Connnection
1 (Ground) Switch COM
2. Switch STOP
3. Switch START
Coil + Run Time Meter
With this information, you should be able match your colors inside to see where they go outside.
|
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] Onan wiring help [message #79202 is a reply to message #79134] |
Sun, 04 April 2010 04:59 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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this might help
http://gmcmotorhome.info/generator.html#No
gene
On Sat, Apr 3, 2010 at 2:04 PM, Len <B52Rule@adelphia.net> wrote:
> The remote start/stop switch inside the coach just quit. No start, no stop,
> nothing. I can start and stop the onan from the controls on the generator
> itself. I found a trailer connector that seems to connect the remote
> switch
> to the Onan just in back of the power drawer. We sort of as it
> disintegrated in my hands as I pulled it apart. There are four wires
> coming from the coach red, blue, green, and brown that are supposed to line
> up with four wires coming from the Onan..all white. Does anyone have a
> diagram as to what or how the wires are supposed to match up?
>
>
>
>
>
> On a side note I lost all power to the batt, fresh water, black water, and
> propane indicators. Nothing, zip, nada.
>
>
>
> Cheers,
>
>
>
> Len and Pat
> 78 Kingsley, The Beast II with dash lights that work
> Fallbrook, CA
>
> http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
>
> www.bdub.net/novak/
>
>
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] Onan wiring help [message #79204 is a reply to message #79134] |
Sun, 04 April 2010 05:42 |
Rusty
Messages: 197
Registered: October 2005
Location: Philadelphia Pa
Karma: 0
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Senior Member |
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Here ya go
WHITE - (Ground) Switch COM 1 on both the Onan and the Remote
YELLOW - Switch STOP 2 "
BLACK - Switch START 3 "
RED - Coil + Run Time Meter 6 "
Wouldn't hurt to clean the contacts on the remote switch, you
may find they will also fall apart - just deal with it
Rusty
75 Glenbrook
Philadelphia Pa
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| Re: [GMCnet] Onan wiring help [message #79220 is a reply to message #79134] |
Sun, 04 April 2010 10:37 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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The crusty Onan connector is as common as the day is long. In fact there was just a blurb about it in the GMC Motorhome News 12/09 from Cinnabar. I would cut, solder, and heat shrink with the hot melt glue type of sealing shrink if I were to do the job.
On the wheel pull, I'm sure you've removed the saftey clip right? Sounds like a good whack with a large Ford tool (hammer) on the center shaft might help. I always leave the center nut loosly in place so when it pops you don't have a surprize.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] Onan wiring help [message #79277 is a reply to message #79145] |
Sun, 04 April 2010 21:01 |
Len Novak
Messages: 676
Registered: February 2004
Location: Las Vegas, NV
Karma: -3
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Senior Member |
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Just when I thought I was making progress.........
Chase all the wires down, labeled them, used watertight splices, went in
the coach, hit the start button and...............nothing.
It seems though the connector had turned to dust I now have a bad Onan
switch inside the coach. I shorted the correct wires out and it starts and
stops as advertised. I ran a check on the switch......nothing.
The coach goes to Miguel on Tuesday, I hope he has a switch in his shop.
I still can't find out why the indicator panel lost power.
Cheers,
Len and Pat
78 Kingsley, The Beast II with dash lights that work
Fallbrook, CA
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Ken Henderson
Sent: Saturday, April 03, 2010 3:28 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Onan wiring help
Len,
The Onan service manual is at bdub.net. But here's where they go:
Control Inside Panel
Boad Pin Connnection
1 (Ground) Switch COM
2. Switch STOP
3. Switch START
Coil + Run Time Meter
With this information, you should be able match your colors inside to see
where they go outside.
Ken H.
Americus, GA
'76 X-Birchaven
www.gmcwipersetc.com
On Sat, Apr 3, 2010 at 6:08 PM, Len <B52Rule@adelphia.net> wrote:
> George,
>
> Thanks, that is the plan. Problem is what wire gets spliced where?
>
> Cheers,
>
> Len and Pat
>
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Len and Pat Novak
1978 GMC Kingsley
The Beast II with dash lights that work and labels you can see!
Las Vegas, NV new email: B52sRule@Gmail.com
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
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| Re: [GMCnet] Onan wiring help [message #79604 is a reply to message #79277] |
Wed, 07 April 2010 17:36 |
MikeT
Messages: 225
Registered: November 2009
Location: Marine City, Michigan
Karma: 0
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Senior Member |
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Seems like when I read about something on this forum, it happens to me. I've been working on my coach and using the generator quite often. Start/stop from inside or outside. Yesterday I noticed the light not on in the remote switch. Went to shut it off and nothing. Reading this thread I checked the wire harness and it looks good. Looks like it was replaced by the PO. Switch all looks good inside. Not sure what to check next.
Any additional advice would be appreciated.
Thanks
Mike Thomas
Marine City, MI
77 ex Palm Beach
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| Re: [GMCnet] Onan wiring help [message #79611 is a reply to message #79604] |
Wed, 07 April 2010 18:13 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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On Apr 7, 2010, at 4:36 PM, Thomas Mike wrote:
>
>
> Seems like when I read about something on this forum, it happens to
> me. I've been working on my coach and using the generator quite
> often. Start/stop from inside or outside. Yesterday I noticed the
> light not on in the remote switch. Went to shut it off and nothing.
> Reading this thread I checked the wire harness and it looks good.
> Looks like it was replaced by the PO. Switch all looks good inside.
> Not sure what to check next.
>
> Any additional advice would be appreciated.
>
> Thanks
> --
> Mike Thomas
> Troy, MI
> 77 Eleganza II
>
If you still have the four conductor connector at the right rear lower
corner of the Onan take it apart and clean it. Better yet, cut off
the connectors and, using some heat shrink tubing, solder the wires
together.
Also, take off the cover of the control box and one at a time, pull
off the spade connectors and push them back on. It would also be a
good idea to put some dielectric grease on each spade before pushing
back the connector.
Emery Stora
77 Kingsley
Santa Fe, NM
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| Re: [GMCnet] Onan wiring help [message #79614 is a reply to message #79611] |
Wed, 07 April 2010 18:33 |
MikeT
Messages: 225
Registered: November 2009
Location: Marine City, Michigan
Karma: 0
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Senior Member |
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The control box that you refer to, is that the start stop hobbs meter cover at the front door? I did check the 4 wire plug under the generator and it looks good. I see the wires then run to a small sheet metal box in the far back of the generator compartment and then on to the generator. Might have to figure out how to access that box without pulling the generator out.
Mike Thomas
Marine City, MI
77 ex Palm Beach
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| Re: [GMCnet] Onan wiring help [message #79627 is a reply to message #79614] |
Wed, 07 April 2010 19:46 |
Len Novak
Messages: 676
Registered: February 2004
Location: Las Vegas, NV
Karma: -3
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Senior Member |
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The control box (board) is where all the terminals connect behind the remote
starter switch.
Len and Pat
78 Kingsley, The Beast II with dash lights that work
Fallbrook, CA
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Thomas Mike
Sent: Wednesday, April 07, 2010 4:34 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Onan wiring help
The control box that you refer to, is that the start stop hobbs meter cover
at the front door? I did check the 4 wire plug under the generator and it
looks good. I see the wires then run to a small sheet metal box in the far
back of the generator compartment and then on to the generator. Might have
to figure out how to access that box without pulling the generator out.
--
Mike Thomas
Troy, MI
77 Eleganza II
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GMCnet mailing list
List Information and Subscription Options:
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Len and Pat Novak
1978 GMC Kingsley
The Beast II with dash lights that work and labels you can see!
Las Vegas, NV new email: B52sRule@Gmail.com
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
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| Re: [GMCnet] Onan wiring help [message #79692 is a reply to message #79604] |
Thu, 08 April 2010 07:33 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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Senior Member |
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When this happens on mine, it is always that connector on the rear of
the Onan. I use that spray ele contact cleaner from Home Depot and it
never fails to do the job. Part of my annual maintenance is to use
that stuff on all the lug connectors on the circuit board also. Fuse
panels etc., a good, inexpensive, easy to use product. Just make sure
it is dry before energizing the circuits.
On Wed, Apr 7, 2010 at 3:36 PM, Thomas Mike <mthomas@wideopenwest.com> wrote:
>
>
> Seems like when I read about something on this forum, it happens to me. I've been working on my coach and using the generator quite often. Start/stop from inside or outside. Yesterday I noticed the light not on in the remote switch. Went to shut it off and nothing. Reading this thread I checked the wire harness and it looks good. Looks like it was replaced by the PO. Switch all looks good inside. Not sure what to check next.
>
> Any additional advice would be appreciated.
>
> Thanks
> --
> Mike Thomas
> Troy, MI
> 77 Eleganza II
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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