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| Re: [GMCnet] Junction box [message #341138 is a reply to message #341137] |
Tue, 19 February 2019 14:07   |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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Hi, Ty.
Is that large nut in the fourth picture the infamous common negative point for the house battery wiring? Ken Burton told me that that connection was not making good contact on my coach. I wonder if it is far more accessible if I remove the gas range.
D C "Mac" Macdonald
Amateur Radio K2GKK
Since 30 November '53
USAF and FAA, Retired
Member GMCMI & Classics
Oklahoma City, OK
"The Money Pit"
TZE166V101966
'76 ex-Palm Beach
k2gkk + hotmail dot com
Cell: 405-642-7337
________________________________
From: Gmclist on behalf of Ty Hardiman via Gmclist
Sent: Tuesday, February 19, 2019 13:44
To: gmclist@list.gmcnet.org
Cc: Ty Hardiman
Subject: Re: [GMCnet] Junction box
Here is a good link to help find the junction block:
https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.gmcmhphotos.com%2Fphotos%2Fg3916-location-of-the-hidden-12-volt-junction-block.ht ml& ;data=02%7C01%7C%7C2e4e66f9dcbb40db229e08d696a51e7c%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636862033250609664&sdata=TnyZWz%2FdKfNhVh8%2F 5DgqqrEKwWMe8hO7OjnrINz8fJQ%3D&reserved=0
--
Ty Hardiman, Norman, OK / Member FMCA-GMCMI-GMC Classics / August 1977 Kingsley TZE167V102390 / 26' / 403 / 3.55 / 16" Wheels / Quadrajet / HEI /
Previous Owners: Basil LeBlanc, Dan Ramker / Original Owner: William Strahm, Loveland, CO
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| Re: [GMCnet] Junction box [message #341140 is a reply to message #341138] |
Tue, 19 February 2019 17:23 |
Ty Hardiman
Messages: 43
Registered: April 2017
Location: Norman, Oklahoma
Karma: 0
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Member |
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Mac, I believe you are referring to the final picture which shows a stud mounted in plastic and attached to the aluminum exterior. This is the positive run which connects the front and rear battery systems. Like Emory said, some coaches may have different routing or modifications over time.
The reason for a junction at this unfortunate location is to allow a power branch to the 12 volt house circuit fuse panel & converter located in the "electrical closet". So this power stud has three connections, one to the rear motor generator, one to the front of the coach, and a short run to the fuse panel. There is also a ground connection very close to this, you can likely find it by following the ground wire from your converter and see where it ends up. It may just be a black wire screwed into the body frame.
I believe what Jim Hupy was suggesting in the related thread was to run a completely new positive wire connecting the front and rear of the coach at the appropriate points, and then get inside to this junction block and remove just the wire going to the front of the coach. Tape it off at both ends and abandon in place, but keep the other two wires on the post because that is how the house fuse block gets its power from the house batteries/motor generator. This is assuming that the wire going to the front is damaged/shorted out and the wire going to the rear is still good.
And that power post is live, disconnect your batteries before getting in there with a wrench, otherwise sparks will fly!
Norman, OK / August 1977 Kingsley / 403 / 3.55 / 16" / Quadrajet
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| Re: [GMCnet] Junction box [message #341155 is a reply to message #341140] |
Wed, 20 February 2019 09:18 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Yes, that is kinda what I suggested. But, the old wire, with failed
insulation, is a hazard if not disconnected at each end, and properly
isolated and tagged. Simple reason being to prevent its use in the future
by some future owner who does not know the history behind what happened.
Don't just lop it off and leave it hanging loose. Bad stuff can and will
happen if you do things like that.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Tue, Feb 19, 2019, 3:25 PM Ty Hardiman via Gmclist <
gmclist@list.gmcnet.org wrote:
> Mac, I believe you are referring to the final picture which shows a stud
> mounted in plastic and attached to the aluminum exterior. This is the
> positive run which connects the front and rear battery systems. Like Emory
> said, some coaches may have different routing or modifications over time.
>
> The reason for a junction at this unfortunate location is to allow a power
> branch to the 12 volt house circuit fuse panel & converter located in the
> "electrical closet". So this power stud has three connections, one to the
> rear motor generator, one to the front of the coach, and a short run to the
> fuse panel. There is also a ground connection very close to this, you can
> likely find it by following the ground wire from your converter and see
> where it ends up. It may just be a black wire screwed into the body frame.
>
> I believe what Jim Hupy was suggesting in the related thread was to run a
> completely new positive wire connecting the front and rear of the coach at
> the appropriate points, and then get inside to this junction block and
> remove just the wire going to the front of the coach. Tape it off at both
> ends
> and abandon in place, but keep the other two wires on the post because
> that is how the house fuse block gets its power from the house
> batteries/motor
> generator. This is assuming that the wire going to the front is
> damaged/shorted out and the wire going to the rear is still good.
>
> And that power post is live, disconnect your batteries before getting in
> there with a wrench, otherwise sparks will fly!
> --
> Ty Hardiman, Norman, OK / Member FMCA-GMCMI-GMC Classics / August 1977
> Kingsley TZE167V102390 / 26' / 403 / 3.55 / 16" Wheels / Quadrajet / HEI /
> Previous Owners: Basil LeBlanc, Dan Ramker / Original Owner: William
> Strahm, Loveland, CO
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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