I was working on my radio to install a bypass for the e-brake, so that I can delete the bluetooth memory.
Now the selector switch doesn't work, therefore my a/c only blows on the lowest speed.
I saw a post that it could have been caused by the selector switch not being fully seated due to the radio work. I'm not exactly sure what this means.
I already replaced the blower motor resistor, and that didn't fix it.
Please help! Summer is coming soon.

 

the selector switch ( pass side) connector has a cam lock on it, its grey or brown IIRC, you have to have it "unlocked" or towards the front of the car, insert connector in control panel then rotate cam lock towards rear of car to seat it. if its in the seated position when you connect it, you will end up with the issues you have. good luck