1999 SAAB 9-5 A/C compresser wont kick in

U SAY FREON IS FINE MAKE SURE CAUSE THIS IS VERY IMPORTANT, WONT WORK IF NOT ENOUGH FREON IN SYSTEM SHOULD BE 87KG'S OR ALMOST 2 LBS, ALSO DID U CHECK FOR POWER AT THE COMPRRESSOR ELECTRICAL WIRING [SINGLE RED WIRING GOING TO COMPRESSOR ] WITH ACC UNIT SET TO ON, & I AM JUST NOTING U SAID U CHECKED FUSE, RELAY IS LOCATED IN THE ENGINE BAY FUSE PANEL CHECK COVER FOR LOCATION, ALSO IS YOUR ENGINE COOLANT TEMP SENSOR WORKING OK, THIS WILL AFFECT A/C FUNCTION IF NOT WORKING GOOD, GOOD LUCK.