1992 ac problem

[92chevy20]

Hey new old school truck owner.1992 C1500 trying to get some help on fixing my ac. I have replaced all the relays for the blower(three behind glove box ) replaced my pressure switch for the ac. Replaced the fuse for the ac as well. My high and low line are both holding everything in. My ac light still blinks even tho I have enough freon. My blower motor Is fairly new it works good. Any suggestions would be helpful out if ideas here. Clutch also engages when I disconnect the battery and reconnect it and run AC.