I took out my climate control today, but I didn't remove the wire. When I put it back in, my heater doesn't work.

 

the hot/cold cable probably came loose either take it back off and reconnect the cable properly or on the bottom left side you will see where the cable connects to your heating system and you can jus push it. kinda hard to explain but i did the same thing before and had to do that until i pulled my climate control a reattatched that cable