A/C won't turn off

Hey guys, my A/C compressor won't turn off. I've tried changing out the switch and it's a no-go. If you unplug the connector on the compressor it will turn off if that means anything.

any ideas?

is there a relay or anything like that? low pressure switch?

thanks in advance
 
No info about your car's model year, EFI or carb, no mods listed. Makes it hard to troubleshoot when we don't know what you have.

Therefore, no clue as to which wiring diagram you need. The wiring changed several times between 79 & 95.

That's why it is a good idea to use the sig under the user control panel (User CP) option. It allows you to post your car year & mods, which help greatly when troubleshooting things. No, it is not there for us to snoop and see any "Secrets" you have hidden away under the hood. Be a good stangnetter and update you sig for future reference & don't keep us guessing.