69 70 71 72 Delco electro-vacuum selector switch-- AC-Vent-Heater- Defrost --installed in dash mounted control unit #1386904 for Skylark GS and larger models with Air conditioning very clean --with original box-- $90 plus shipping from CT 06410. ros6872@hotmail.com or call 203-651-9990 or PM. Enjoy GM quality and fit I can accept Paypall credit card via phone, check or money order. I have lots of nice 68-72 parts--please contact me with needs-- Thanks for looking !