Vacuum Harness HVAC: Service and Repair

Vacuum Harness - Dash - Color Coding:

VACUUM LINES - INSTRUMENT PANEL

Air conditioning systems use vacuum lines molded to a connector which is attached to a vacuum control switch on the control assembly (see accompanying figure).

In case of leakage or a hose collapse, repair by cutting the hose and inserting a plastic connector. If an entire hose needs replacing, cut all of the hoses off at the connector and then attach the hoses directly to the control assembly vacuum switch.