AC compressor problem

[FivepointSlow]

Spring is here and the temps are rising in New England and I'm just about ready to put the Stang back on the road for this season.
That being said I'm now just remembering that my AC does not work...
The compressor never kicks on, the clutch on the pulley is always disengaged. And I'm not sure how to approach diagnosing it.
Is there a fuse for it I should check? Does it not spinning and turning on mean i need a new compressor?
Any help or suggestions would be appreciated!

 

[castine917]

How much refrigerant pressure do you have?

 

[FivepointSlow]

How much refrigerant pressure do you have?

I havent even checked tbh. Will it not turn on if the pressure isnt high enough?
Would make sense...

 

[lwarrior1016]

There is a pressure switch on the accumulator on the firewall, unplug it and jump the wires together. If the compressor comes on, then either the charge is low or the low pressure switch is bad.

 

[castine917]

I havent even checked tbh. Will it not turn on if the pressure isnt high enough?
Would make sense...

If higher or lower than range it will not turn on. Can test either with gauge or as warrior said to.

 

[FivepointSlow]

Looks like I am going to have to bring it by a shop and have them check my freon pressure..
Found and jumped that sensor and wouldn't ya know, compressor kicks on.
Seemed to blow relatively cool air.. But didn't want to run it too long not knowing the freon status.

Thank you guys for your help!