NOS Vacuum harness

Got it straight from my 65 parts manual. Looked it up by part number 2580 488 which referred it as Code 1-48-7 which is in Section 1 - Accessories. 1-48-7 is listed under 1-48-0 Heater and Components. That section is called Tubes and Connectors, Heater Control. That part number - 2580 488 - is shown only for the big Dodge, Plymouth and Chrysler. For the B Bodies they list a different part number - 2496 010 and none for the A Body nor Imperial. 65 B and C Body heater controls were vacuum operated and so by the part number it’s for the big Dodge/Plymouth to operate the heater controls. When equipped with factory AC a different set of vacuum hoses were used. Hope this helps.