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Fiesta ST
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OEM Wiring Diagrams Component Testing
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Component Testing
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Instrument Panel Dimmer Switch
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Component testing procedure
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
Component testing procedure
Circuit to test
Connect self-powered test light or ohmmeter to terminals
Move switch to these positions
A good switch will indicate
Interior dimmer Circuit
4 and 7
Dimmer Up
Closed circuit
4 and 3
Dimmer Down
Closed circuit