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Home >> Ford >> 1989 >> Thunderbird Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> AUTOLAMP System >> Testing >> Control Switch Test >> On-Off Control Switch
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

On-Off Control Switch

  1. Using test light, test system ground through driver's delay control switch. Connect one lead to ground and other lead to Purple/Orange wire of delay control switch, with switch in "ON" position. If there is no continuity, perform steps 1) and 2) of POTENTIOMETER TEST.
  2. If potentiometer test is okay (continuity), check Purple/Orange wire between potentiometer connector and amplifier connector.
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