Okay so im A/C was converted to R-134A back a few years ago and when it was converted they replaced the compressor as well. this was all with the previous owner. i have the reciept tho. when i bought the car i was told the A/C didnt work. when putting the climate control in AUTO the compressor does not kick on nor do i hear a change in RPM'*. i plugged in my guage and at idle i'm seeing 60 PSI at idle on the low side. i tried shorting out the connector for the pressure switch and it still doesnt kick the compressor on but i do hear a change in RPM'*.

i ran the diagnostic check on the climate control and in the stored codes was a code for a short in the exterior temp sensor and the interior temp sensor. but they were stored and listed as no longer a problem.

any ideas where i should start?

Your low pressure reading isn't valid unless the compressor is turning. Check for voltage at the clutch connector with the AC on.
A weakly charged system will not engage the compressor. Also pull the HVAC control and check the connector terminals.

there is 12 volts at the compressor connector on the top of the unit...