Q: How to remove and install a compressor in a Toyota MR2?
A: Disconnect the cable from the negative terminal of the battery and remove the battery. Locate the compressor clutch lead wire, which is the square white connector at the front right corner of the cylinder head, and disconnect it from the main engine wiring harness. Disconnect the two flexible hoses from the compressor, but be sure to immediately cap the open fitting to prevent moisture from entering the system. Loosen the drivebelt idler pulley bolt and remove the drivebelt. Remove the compressor mounting bolts and the compressor. Installation is the reverse of removal.