A/C Issues After Radio Install

Hi all,

I replaced the stock radio with an aftermarket one. Once I put it all back I noticed my A/C will not blow cold air anymore. All the speeds work, A/C light comes on, Heat Works...However I noticed the radiator fans do NOT come on anymore when the A/C is on.

I do not know enough about cars in general to diagnose or where to start looking first, I mean I assume it has to be something I knocked loose while removing the stereo or it's a fuse blown.
 
Check the connectors/plugs on the back of the HVAC control unit.
You probably knocked one loose.

The same thing happened to another member after a stereo was installed.
 
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