Heater Actuator vacuum Connections

[pcwizard]

I removed my heater box to replace the heater core and I have everything back in but there are 2 vacuum lined that go on the back actuator near the firewall. One is Black w\ white stripe and the other one is Black w\ blue stripe and I dont remember how the connect on the back actuator as for as which one goes on which port. Please help as I am in the middle of installing complete change over harness and I need to get these connections right the first time. Thanks in Advance, pcwizard.

[ron350]

Hello pcwizard

What year truck and with or without A/C?

[pcwizard]

1987 with A/C Thanks, Brent.