How to Spot a Car's Blower/Heater Switch
- 1). Wear your work clothes and open up the hood. It may be a good idea to wait overnight for your car's engine to cool off, so you don't have to worry about touching a superheated piece of equipment. Grab the owner's manual for your car. Many owner's manuals include diagrams of where different parts of the car are located.
- 2). Find your fuse box. This may be concealed behind a plastic panel inside the door jamb of the driver's side door. This is the hub of your car's electrical system. Those little fuses protect your car's components from over voltage and other problems.
- 3). Locate your blower/heater switch. Often times, this will look like two rectangular plastic knobs when fully installed. This plastic conceals the control relays and rheostat that modulate the speed at which your car's cabin fans spin. When removed, the blower/heater switch has metal extensions that plug into the proper place. These serve as connectors to put your heating and air conditioning in contact with the dials on your dashboard. This your car's blower/heater switch.
- 4). Put these rectangular plastic knobs back onto your car when you're finished with the work you need to do with your car's blower/heater switch.
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