Cadillac Repair: 1995 CADILLAC SEDAN DEVILLE A/C QUESTION, cadillac sedan deville, computer shut down

Question
I NEED TO RECHARGE THE A/C IN MY SEDAN DEVILLE. I HAVE DONE THIS SEVERAL TIMES TO MANY CARS I HAVE OWNED, INCLUDING OLDER CADILLACS.  
THE PROBLEM IS, THE COMPUTER SHUT DOWN THE COMPRESSOR DUE TO LOW REFRIGERANT LEVELS, AND I CANNOT GET THE SYSTEM TO CHARGE BECAUSE THE COMPRESSOR WON'T ENGAGE. DO I NEED TO CLEAR THE CODES FOR IT TO ENGAGE IN ORDER TO CHARGE THE SYSTEM, OR JUST ADMIT DEFEAT AND HAVE A GARAGE DO IT FOR ME?
ANY HELP WOULD BE APPRECIATED,
THANKS IN ADVANCE FOR A PROMPT RESPONSE    T.W.

Answer
You can either jumper across the LOW PRESSURE SWITCH electrical connector or apply battery voltage to the POSITIVE terminal of the A/C compressor until you get 2 cans of freon in the system and then the system should re-ingage by itself.


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