I noticed my heater not working today, and no matter what setting it's on, the blower never kicks in and nothing comes out of any vents.
I did alot of searching and found several typical causes. I replaced the relay for the blower motor, as I have +12V coming from the red wire. That didn't fix it. If I run +12V directly to the purple wire, the blower kicks in on high, but only out of the defroster vent. So, I've read that I probably have a vacuum leak somewhere defaulting it to defrost. What I can't figure out is why the blower doesn't turn on by itself. When the car is on, I can't get the air to come out.
Any help is appreciated.

 

New question, I fixed the above, but wanted to know where the vacuum line from the heater control valve goes. Mine goes into a wire loom near the firewall, then a similar line comes out and goes into a T on the driver's side of the manifold. Is that one line that is kinked 180 degrees, or are there two seperate lines there? I didn't want to slice open the taped loom too far if I don't have to.