Vacuum for ac/heater blend doors

[fleming442]

Then his is broke at the firewall, I guess.....

 

[uneek1976]

I added that vacuum ball as well and that didn't help with my issue of nothing coming from the vents.

 

[DoubleL]

Today I pulled the inner fender well. I found the purple vacuum line I was looking for. I extended the line and tee’ed it into the brake booster vacuum line. Now my interior blend doors operate as they should! I did not add the vacuum ball. I hope this may help someone in the future. Thanks for all the info!