Vacuum Hose help

[70GreenBurb]

I just added factory Four Seasons Air to my 70 Burb. On mine, the Vac hose from the tank came through the firewall and attached to the passenger side nipple of the vacuum valve on the controls. A vacuum hose went from the drivers side nipple of the control valve to a Tee which with one branch going back through the firewall to the cowl vent actuator for the air shutoff valve and the other going to the recirculating valve actuator for the kick panel vent. Not sure how the setup changes with front and rear air.