| Re: [GMCnet] Chassis wiring questions [message #344543] |
Tue, 25 June 2019 12:59  |
rallymaster
Messages: 662
Registered: February 2004
Location: North Plains, ORYGUN
Karma: -4
|
Senior Member |
|
|
Ken, both coach and engine batteries are charged from the alternator.
The alternator is connected to the center tap of the diode bridge and the
coach battery is connected to one of the ends and the engine battery is
connected to the other. This allows the alternator to charge both coach
and engine batteries with no direct connection between the two.
ronC
Ron & Linda Clark
North Plains, ORYGUN
1978 Eleganza II
On Tue, 25 Jun 2019 10:48:59 -0600 Ken Harland via Gmclist
writes:
> While it's great to have a full set of manuals complete with wiring
> diagrams, I've found they're woefully lacking when it comes to
> certain aspects.
> Specifically the generator and converter. They show the generator
> feeding directly into the chassis harness, no bother about the
> 120VAC to 12VDC
> conversion. They don't show the converter at all nor do they show
> the fuse panel above the converter and its associated circuits, at
> least not that
> I've found.
>
> Looking at the wiring diagram seems to indicate that both batteries
> are charged when the generator is running or when plugged into shore
> power but I
> don't believe that's correct, at least it's not happening with my
> coach. But if I'm correct, what's the purpose of the battery diode?
> Unless your
> feeding both circuits, they both are already separate. And you can
> bridge them momentarily with the Battery Boost switch. And I've
> complicated my
> issue by relocating the house battery to a custom tray up front with
> the engine battery. While everything seems to function as it should
> if I'm
> correct that the engine battery doesn't get charged along with the
> house one. So again, why the diode bridge between them?
>
> Ken H
> 1978 E II
> --
> 1978 Eleganza II
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
Ron & Linda Clark
North Plains, ORYGUN
1978 Eleganza II
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Ron & Linda Clark
North Plains, ORYGUN
78 Eleganza II
|
|
|
|
| Re: [GMCnet] Chassis wiring questions [message #344545 is a reply to message #344543] |
Tue, 25 June 2019 13:11  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
|
Senior Member |
|
|
Ken,
Learn to reach out to us to help.
You will not find any SOB coaches that has diagrams anywhere close to ours
and dealers like us for these old parts. SOB means Some Other Brand
On Tue, Jun 25, 2019 at 11:02 AM rallymaster--- via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Ken, both coach and engine batteries are charged from the alternator.
> The alternator is connected to the center tap of the diode bridge and the
> coach battery is connected to one of the ends and the engine battery is
> connected to the other. This allows the alternator to charge both coach
> and engine batteries with no direct connection between the two.
> ronC
>
>
> Ron & Linda Clark
> North Plains, ORYGUN
> 1978 Eleganza II
>
> On Tue, 25 Jun 2019 10:48:59 -0600 Ken Harland via Gmclist
> writes:
>> While it's great to have a full set of manuals complete with wiring
>> diagrams, I've found they're woefully lacking when it comes to
>> certain aspects.
>> Specifically the generator and converter. They show the generator
>> feeding directly into the chassis harness, no bother about the
>> 120VAC to 12VDC
>> conversion. They don't show the converter at all nor do they show
>> the fuse panel above the converter and its associated circuits, at
>> least not that
>> I've found.
>>
>> Looking at the wiring diagram seems to indicate that both batteries
>> are charged when the generator is running or when plugged into shore
>> power but I
>> don't believe that's correct, at least it's not happening with my
>> coach. But if I'm correct, what's the purpose of the battery diode?
>> Unless your
>> feeding both circuits, they both are already separate. And you can
>> bridge them momentarily with the Battery Boost switch. And I've
>> complicated my
>> issue by relocating the house battery to a custom tray up front with
>> the engine battery. While everything seems to function as it should
>> if I'm
>> correct that the engine battery doesn't get charged along with the
>> house one. So again, why the diode bridge between them?
>>
>> Ken H
>> 1978 E II
>> --
>> 1978 Eleganza II
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
> Ron & Linda Clark
> North Plains, ORYGUN
> 1978 Eleganza II
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
|
|
|
|
| Re: [GMCnet] Chassis wiring questions [message #344560 is a reply to message #344543] |
Tue, 25 June 2019 17:15 |
kwharland
Messages: 246
Registered: November 2005
Location: Central Florida
Karma: 0
|
Senior Member |
|
|
rallymaster wrote on Tue, 25 June 2019 13:59Ken, both coach and engine batteries are charged from the alternator.
The alternator is connected to the center tap of the diode bridge and the
coach battery is connected to one of the ends and the engine battery is
connected to the other. This allows the alternator to charge both coach
and engine batteries with no direct connection between the two.
ronC
Ron & Linda Clark
North Plains, ORYGUN
1978 Eleganza II
Thanks, I've learned that from other replies as well.
jimk wrote on Tue, 25 June 2019 14:11Ken,
Learn to reach out to us to help.
You will not find any SOB coaches that has diagrams anywhere close to ours
and dealers like us for these old parts. SOB means Some Other Brand
Thanks Jim, I was referring to the GMC manuals, I have a full set.
1978 Eleganza II
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
