Home » Public Forums » GMCnet » Low coolant switching module
| Low coolant switching module [message #276950] |
Wed, 29 April 2015 00:43  |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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I see a low coolant switching module in the wiring diagram but haven't been able to find it. Anyone know where I should look?
Thanks for any help. I'm working on a 1977 Royale.
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: [GMCnet] Low coolant switching module [message #276980 is a reply to message #276950] |
Wed, 29 April 2015 10:05  |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Hal, it is never in the same place twice in my experience. It is poorly
marked. Most of the time it just dangles from the harness somewhere in the
vicinity of the back of the warning light cluster. Most of them are non
functioning. Probably best to trace wire color from the sending unit, and
hope that it does not change color somewhere along the way. JWIWD. How is
the Diesel conversion coming?
Jim Hupy (heading for a GMC Cascaders Rally in a couple of hours, in Port
Angeles, Washington. Put on by Greg Birch and his wife Rainy. Going to have
some interesting stuff going on there. Gregg is going to share a lot of
history from his Grandfather, Alex. Also a tech session from the Land Speed
GMC guys. )
Salem, Or
78 GMC Royale 403.
On Wed, Apr 29, 2015 at 1:43 AM, Hal StClair
wrote:
> I see a low coolant switching module in the wiring diagram but haven't
> been able to find it. Anyone know where I should look?
> Thanks for any help. I'm working on a 1977 Royale.
> Hal
>
> --
> 1977 Royale 101348,
>
> 1977 Royale 101586,
>
> 1974 Eagle Bus 45',w/slideout
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] Low coolant switching module [message #276990 is a reply to message #276980] |
Wed, 29 April 2015 10:41 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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Read here. http://www.gmcmhphotos.com/photos/g5904-low-coolant-module.html
On Wednesday, April 29, 2015, James Hupy wrote:
> Hal, it is never in the same place twice in my experience. It is poorly
> marked. Most of the time it just dangles from the harness somewhere in the
> vicinity of the back of the warning light cluster. Most of them are non
> functioning. Probably best to trace wire color from the sending unit, and
> hope that it does not change color somewhere along the way. JWIWD. How is
> the Diesel conversion coming?
> Jim Hupy (heading for a GMC Cascaders Rally in a couple of hours, in Port
> Angeles, Washington. Put on by Greg Birch and his wife Rainy. Going to have
> some interesting stuff going on there. Gregg is going to share a lot of
> history from his Grandfather, Alex. Also a tech session from the Land Speed
> GMC guys. )
> Salem, Or
> 78 GMC Royale 403.
>
>
> On Wed, Apr 29, 2015 at 1:43 AM, Hal StClair >
> wrote:
>
>> I see a low coolant switching module in the wiring diagram but haven't
>> been able to find it. Anyone know where I should look?
>> Thanks for any help. I'm working on a 1977 Royale.
>> Hal
>>
>> --
>> 1977 Royale 101348,
>>
>> 1977 Royale 101586,
>>
>> 1974 Eagle Bus 45',w/slideout
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List 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] Low coolant switching module [message #276994 is a reply to message #276980] |
Wed, 29 April 2015 11:44 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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Thanks Jim, not knowing what it looks like makes finding it harder to locate. I'll find it though, it must be there.
The swap is coming along, a little slower than I'd hoped, but there always seems to be 'project creep' involved. I'm trying to integrate the wiring systems now along with a new Mac dash. I've grafted in the fuse box from the donor Chevy diesel pickup and am adding another 7 circuit aftermarket fuse panel. There were a lot of wires to cull out of the dash, almost 40 years of add on's worth. The dash structure is a mess too and will need to be addressed yet. The fuel tank, lines and filters are all in which ended up being more of a job than expected. I ended up running new 2" hard fill pipe to the tank, running it outside the frame and keeping the fill in the original location. There just wasn't room for the neck and door behind the refer. I hope to power it on it's own within two weeks. I'll wait a little to finish the inter cooler plumbing as it will need a new intake manifold which is going to take a while. Wish I had learned to do casting work, the manifold would be the perfect candidate for casting.
Wish me luck.
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: [GMCnet] Low coolant switching module [message #276995 is a reply to message #276994] |
Wed, 29 April 2015 11:47 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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Thank you Gene,that's EXACTLY what I needed.
Thanks again, Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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