Ok, so I bought this car used this week, here is my problem; Cars a/c and heat do not work! Motor blows but no hot or cold air. Second went to buy radio, because it didn't have one. Pulled wiring harness down under console to install wires, the radio worked, when I unplugged radio clip to pull wires back through dash and plugged up radio, radio then shut off. Traded radio in as defective, and now on my 3rd one! So I believe that my heat and a/c not working, and radio now does not even turn on, so i think its all connected.
Haven't really troubleshooted, do not know where to start.
Any help is appreciated.