I don't recall seeing another plug that looked like the one for the air temp sensor motor. But if I continue to have issues I will keep that in mind. I didn't have much time yesterday to look at the car again. Hopefully today. Thanks for the input.

 

So I did some more work on this A4 today. Was able to get the snowflake icon to stay on. I removed the passenger front headlight and found the high pressure switch was un-plugged. So I plugged it back in and now the icon stays on like it should. Then I found that I could get the compressor to turn on by un-plugging the low pressure switch by the battery and shorting that connection using a wire. Though I am not getting cold air. I am suspicious that there isn’t Freon in the system. I ordered the mastercool adapter from amazon so I can put my quick connect gauge on the line where the low pressure switch is.

I do have a question regarding the compressor relay. I thought I found the AC compressor relay in the 13 way relay carrier in position 3.

Missing a relay

But I don’t understand what is going here. When the car is on, there is always power across the coil to activate it, even when I turn to max heat, or run the fan down all they way and the system shuts off. I was expecting there to be only power to the relay coil when the snowflake icon is lit up on the HVAC head unit.
Can someone tell me if I am wrong? Maybe I don’t have the correct relay. See attached picture.