| Low Air Pressure Switch location. [message #313237] |
Wed, 15 February 2017 10:19  |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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The low air pressure light in out coach has never worked. I was hoping to diagnose the issue, but I can't locate the switch. The bulb checks as good.
Any hints where to look? I can't find an empty air connection or a pair of wires matching the colors....
Thanks
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: Low Air Pressure Switch location. [message #313245 is a reply to message #313237] |
Wed, 15 February 2017 11:02  |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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Mine powers the light off the compressor feed... it's treally a 'compressor running' light.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: Low Air Pressure Switch location. [message #313347 is a reply to message #313237] |
Thu, 16 February 2017 18:33 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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Mine does not even have a light bulb in it but I "think" it is simply a light to indicate when the compressor is running. I also think It is wired to the air pressure switch switch that turns on the compressor.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Low Air Pressure Switch location. [message #313376 is a reply to message #313347] |
Fri, 17 February 2017 09:16 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
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Senior Member |
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my heavily modified 76 Royale has a low pressure switch on the side of the tank which is on the front right under the driver. This is separate from the compressor switch thats on the front of the tank
________________________________
From: Gmclist on behalf of Ken Burton
Sent: Thursday, February 16, 2017 6:33:10 PM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Low Air Pressure Switch location.
Mine does not even have a light bulb in it but I "think" it is simply a light to indicate when the compressor is running. I also think It is wired to
the air pressure switch switch that turns on the compressor.
--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: Low Air Pressure Switch location. [message #313406 is a reply to message #313237] |
Fri, 17 February 2017 23:56 |
JohnS
Messages: 126
Registered: December 2014
Location: Vacaville, CA
Karma: -2
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Senior Member |
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Don't know about 23' 73s, but in GMC fitted ElectroLevel coaches, there was generally no wire run to the low air light. Many of us used the extra contacts on the Pressure switch and ran a wire to the light cluster to let us know if the compressor was running. My 77 Eleganza as delivered had no wire to the switch but had a bulb in the telltale cluster.
John Shutzbaugh, Vacaville, CA, ncserv@aol.com;
78 Buskirk stretch, "What were we thinking?"
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