How do you install an ac compressor belt on a Mitsubishi Eclipse?

You must put the car on jacks and get under it preferably when the engine is cool. Once under the car you will find the A/C compressor located under the brake fluid reservoir. Then locate the pulley which is just below the compressor if you are looking down into the engine bay then loosen this pulley by using a wrench or socket wrench with the nut that is directly in the middle of the pulley. Once complete the pulley should be loose enough to get the belt around it and the compressors pulley, if not you can use a belt stretcher found at any auto supply store. Once finished make sure to tighten the pulley back up but only enough so the belt is tight DO NOT OVER TIGHTEN. The belt well have longer life if tightened correctly. GOOD LUCK!