I read the how-to about MrMopar's grey vacuum tube was broken under the battery. I checked mine at that location and it looks ok. What I'm trying to fix is my recirc door on the HVAC. I can apply vacuum on the line after the solenoid and it opens. I checked the solenoid and tell it's opening and closing. What I wanted to check next is where that grey vacuum line terminates to on the motor side. Any ideas? I don't see it referenced in the SRT6 service manual.

Thanks in advance!