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Home >> Lincoln >> 1990 >> Mark VII LSC >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> AUTOLAMP System >> Testing >> Control Switch Test >> On-Off Control Switch

On-Off Control Switch

  1. Using self-powered test light, test system ground through driver's delay control switch. Connect one lead to ground and other lead to terminal No. 220 (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 photocell/amplifier connector.
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