Still troubleshooting my a/c. 1992 300zx. Came across website that say to check the Thermo amplifier. Im looking at the EVAP box and the only thing i saw was the resistor. I dont know if my Z have one but conceptzperformance have one for 90-92 model. Could anyone tell me where it suppose to be at? I've checked everything else and its good just cant get the compressor to kick in when i turn it on. I have automatic a/c unit.