AC will not stay cold?

Correct, so my question is why is AC switch light not illuminated when depressed? Either the switch itself or amplifier.

Okay, I am going to look at the switch now after I access it via dash panels. Yeah, I was thinking same thing that the switch tells amplifier what to do.

The yellow wire with green tracer. It has power when key is in “on” position.

I have another switch from parts car.

Installed another switch same thing no change. With test light switch has power to yellow/green tracer wire and switch controls power to red/black tracer wire. I can observe the switch controlling power out to red/black tracer wire.

Looking at your diagram I cannot figure out why the light is not coming on when switch is depressed. I know I have power coming in and power out when depressed.

Based on the diagram and both AC switches not lighting up, and what you mentioned initially, I am scrutinizing this rpm sensor on the AC compressor.

The magnetic clutch and lock sensor is shown open in the diagram. How can I check it to verify it is bad?

The white/blue white/red wires are going to the sensor. This is what it looks like.

Still trying to figure out why light in A/C switch not coming on. I need help figuring out the diagram. You said it needs a ground path on the output of a the A/C switch to light up the button. I cannot figure out what to check.

The two wires coming out of the A/C switch go to the amplifier.

Okay, thanks.

I am pleased to report that I swapped out the amplifier with one from junkyard and It fixed my problem. Everything is working fine now. The glove box has to be removed and the amplifier is attached by a Philips screw and bracket to the tube that supports the dash. I am mentioning this so others will know. My AC light was not blinking but totally off. That is why I decided to change the amplifier before the rpm sensor on the compressor. Like you said, the blinking light is associated with the rpm sensor. I opened up the amplifier and I could see burning on the circuit board. Thanks for your help with this.

This is what the amplifier looks like.