82 A/C Switches
Thread Starter
Pro
Joined: Oct 2005
Posts: 505
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From: Houston Tx.
82 A/C Switches
I am in the process of installing an 82 A/C system in my 76, and I have come across a problem. The schematic below shows a low pressure switch (in red) and a clutch cycling switch (in blue). I believe the low pressure switch goes in the liquid line on the right fender skirt and the clutch cycling switch goes between the evaporator and the accumulator. I have found AC Delco switches 15-5861 and 15-2151. I have found both described as clutch cycling switches (AC Delco website) and the latter as a low pressure switch (Corvette Central website). I have tried the local Chevy dealer and was told they don't list parts that far back and do not know anything about AC Delco parts. Can someone give me the correct info on these switches?
Melting Slicks
Joined: Feb 2007
Posts: 2,709
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From: S.E. MI
St. Jude Donor '15
Here is some information.
http://www.ebay.com/itm/A-C-Clutch-Cycle-Switch-ACDELCO-PRO-15-5861-/161747595879?fits=Model%3ACorvette&hash=item25a8e87267&vxp=mtrhttp://www.ebay.com/itm/1977-1979-Corvette-Thermostat-Switch-w-Air-Conditioning-/381302793905?fits=Model%3ACorvette&hash=item58c76ae6b1&vxp=mtrhttp://corvetteforum.net/c3/tunedpor.../index16.shtml
http://www.ebay.com/itm/A-C-Clutch-Cycle-Switch-ACDELCO-PRO-15-5861-/161747595879?fits=Model%3ACorvette&hash=item25a8e87267&vxp=mtrhttp://www.ebay.com/itm/1977-1979-Corvette-Thermostat-Switch-w-Air-Conditioning-/381302793905?fits=Model%3ACorvette&hash=item58c76ae6b1&vxp=mtrhttp://corvetteforum.net/c3/tunedpor.../index16.shtml
Thread Starter
Pro
Joined: Oct 2005
Posts: 505
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From: Houston Tx.
The 82 manual shows the switches like the ones above in the drawings, but don't identify them. I would assume a temp switch like the one shown above is needed, but none are listed for 80-82. I guess the 79 switch is the one to have.
I have tested the 15-5861 switch with an ohmmeter and it is normally open, which would mean it needs pressure to close the switch. That would make this the low pressure cut-off switch. When I get the other temp switch, I am sure it will be normally closed and when it gets cold, it will open the switch.
I have tested the 15-5861 switch with an ohmmeter and it is normally open, which would mean it needs pressure to close the switch. That would make this the low pressure cut-off switch. When I get the other temp switch, I am sure it will be normally closed and when it gets cold, it will open the switch.
Last edited by 76vette1; Jul 12, 2015 at 11:58 AM.
Thread Starter
Pro
Joined: Oct 2005
Posts: 505
Likes: 8
From: Houston Tx.
The low pressure cut-off switch that fits the smaller fitting is a 24-0106. It is the same switch that is used and listed as a 73-79 switch. It does not have the pin to open the schrader valve when installed, so you must remove the valve in order for it to work properly.
