We just finished doing an engine swap on my friends 2000 GT. We used an 03 cobra engine, ccrm harness, cobra fuse box harness and fuse box, and the cobra computer, we swapped every harness except the one in the dash. Everything works fine and the car runs great except the rear defrost and a/c do not work anymore. the vents work fine and air blows but no a/c. All the dash gauges and stereo work. We are stuck summer is approaching and he has no a/c.