Proper name for this A/C switch??

[Just a Six?]

Lil help guys,
87 A/C Accumulator is an electrical plug that screws on then a round 2 wire plug is used.
If you jump the plug it makes the A/C "stay on" & not Cycle as normal.
I remember it called something like the A/C Compressor Cycling Switch??
It's mentioned whenever someone asks about their A/C not working including myself.
One step in trouble shooting threads is to use a few inches of wire to jump the plug to see if Compressor kicks on. What's the proper name or part number??
Glen had it up at Nos4GN but must be out of stock as it's gone from the page. 
Not on Rock Auto that I can see? I just want a spare & figured I could have someone grab me one from Glen at BPG.
Thanks!! 

[daveismissing]

http://www.rockauto.com/catalog/moreinfo.php?pk=83400&cc=1020957

[PacecarTA]

compressor clutch cycle switch

[Just a Six?]

Thanks! 

[Charlief1]

Or low pressure cut out.

[PacecarTA]

with proper charge and a good fan on the blower and on the radiator (dual fans) my compressor doesn't cycle  off , not while idling it doesnt

if charge is low it will run  (draw on low side)  until it reaches the low cutoff then turns off the compressor (cycles)  , high side balances and pressure rises then it closes that switch and it runs again until it shuts down


if you run r134a you may need to lower the low side limit , get a good gauge set hooked up and see what it is , there is an adjustment screw on that switch



dave heres the switch on glens site
http://www.nos4gn.com/servlet/the-191/Buick-Grand-National-AC/Detail

[Steve Wood]

here is one for 134a

http://www.oreillyauto.com/site/c/detail/MRY0/36674/01957.oap?year=1987&make=Buick&model=Regal&vi=1020991&ck=Search_01957_1020991_1011&pt=01957&ppt=C0053

[Just a Six?]

Thanks Paul
In about a 4-5 year period I went thru 2 of these & this one is now on year 3 & all is well.
I figure time to get a spare. I ordered one last year from Glen with other stuff & he forgot it in my order. Cheap insurance for $25
I still run R-12 & have a small stash for future use but this AC system works well & only 1-2 cans over the years to top it off.
Probably because I've never modded/adjusted/fixed it from factory settings!!