Dodge Avenger Air Conditioner Compressor

I Just Got A New Engine Now My A/c Compressor Isn't Working. Is That Apart Of The Engine? Because I Have A Warranty With The Mechanic.

Looking For A/c Relay So I Can Manually Engage Compressor So I Can Charge System.

Last Summer I Completely Refurbished The Ac System (new Lines, Evaporator, Condenser, Compressor) And It Worked Great. Then It Just Stopped...

I've Got The Old Belt Off, And The New One Almost On. I Just Need To Get The Belt On The Tensioner, And I Seem To Be Having A Hard Time....