What components are shown in the 1979 Ford truck heater/A/C system diagram?

The diagram labels the A/C heater function control (vacuum portion), A/C heater function control switch with blower switch, A/C heat vacuum motor, blower motor, outside/recirculate vacuum motor, heater water valve vacuum motor, blower motor resistor, A/C defrost vacuum motor, fuse block, and A/C clutch.

What two subsystems does this heater/air conditioning page cover?

It covers the blower system (electrical) and the controls system (vacuum), for the heater/air conditioning system and deluxe heater.

Where is the blower motor resistor located according to the diagram?

The blower motor resistor is shown on the firewall/cowl area near the blower motor and vacuum motors, behind the engine compartment on the passenger-side dash region.

Are the heater controls on this truck vacuum operated?

Yes — the controls system is identified as vacuum, and the diagram shows several vacuum motors (A/C heat, outside/recirculate, heater water valve, and A/C defrost vacuum motors) plus the vacuum portion of the A/C heater function control.

Home/ Registry/ Ford/ Bronco/ 1978-1979/ 1979 Ford Bronco/ Photo supermotors.net/registry/media/1032658

1979 Ford Bronco/F100-F350 Heater & A/C System Component Location Diagram

Ford pickup heater and air conditioning system component location illustration

‹ ›

Cutaway locator for heater/AC and deluxe heater: blower motor, A/C heat function and selector controls, vacuum motors (outside-recirc, water valve, defrost), A/C clutch, and fuse block.

AI caption August 2014 · Photo 39 of 48

This page (page 39) is from a Ford truck electrical/vacuum reference covering the Heater/Air Conditioning System and Deluxe Heater. It addresses two subsystems: the blower system (electrical) and the controls system (vacuum). The page consists of an isometric line drawing of a Ford pickup truck with the HVAC components drawn in red at their approximate installed locations, connected by dashed lines representing vacuum/electrical routing. Labeled components include the A/C heater function control (vacuum portion), the A/C heater function control switch with blower switch, the A/C heat vacuum motor, the blower motor, the outside/recirculate vacuum motor, the heater water valve vacuum motor, the blower motor resistor, the A/C defrost vacuum motor, the fuse block, and the A/C clutch. From this diagram a reader can learn where each heater/air-conditioning electrical and vacuum component is located in the vehicle — most components cluster on or behind the firewall and dash area, with the A/C clutch at the front of the engine compartment. The page is a component-location overview rather than a wiring schematic; no wire colors, fuse ratings, or part numbers are shown. It belongs to a multi-page set uploaded as "1979 Bronco F100 through F350."

Is this accurate? Sign in to help verify it.

Frequently asked questions

What components are shown in the 1979 Ford truck heater/A/C system diagram?: The diagram labels the A/C heater function control (vacuum portion), A/C heater function control switch with blower switch, A/C heat vacuum motor, blower motor, outside/recirculate vacuum motor, heater water valve vacuum motor, blower motor resistor, A/C defrost vacuum motor, fuse block, and A/C clutch.
What two subsystems does this heater/air conditioning page cover?: It covers the blower system (electrical) and the controls system (vacuum), for the heater/air conditioning system and deluxe heater.
Where is the blower motor resistor located according to the diagram?: The blower motor resistor is shown on the firewall/cowl area near the blower motor and vacuum motors, behind the engine compartment on the passenger-side dash region.
Are the heater controls on this truck vacuum operated?: Yes — the controls system is identified as vacuum, and the diagram shows several vacuum motors (A/C heat, outside/recirculate, heater water valve, and A/C defrost vacuum motors) plus the vacuum portion of the A/C heater function control.