I have a '96 Prelude with some a/c problems. It will not blow cold air. I have troubleshot to where i think it is the heater control unit but im not sure. My compressor is not turning on so i traced it back to the comp clutch relay. it has 12 volts coming in but no signal to engage the relay (red/blue wire from a/t control unit and ecm pin a15) I jumpered the switch so it would always be engaged and the compressor ran fine. After that I troubleshot back to the A/C Switch. This is where the signal comes from, it goes through the a/c thermo switch and the duel press switch. I get the green on light but sometimes it will flicker and i found it is from the blower switch. I knew I was getting power in from the fresh/recirc switch because of the green power light so I switched them around since they are the same switch. Still no luck. So that is where I am and would love some advise. Thank you in advance.