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Headlight Switch Test

NOTE: If only headlights are inoperative, check dimmer switch for proper operation before removing headlight switch. Daytime running lights testing is not included in this article.
  1. Ensure all bulbs and fuses are good before proceeding. Remove headlight switch. See HEADLIGHT SWITCH under REMOVAL & INSTALLATION  . 2) Test headlight switch positions for continuity using applicable chart. See Fig 1 -3.
Fig 1: Testing Headlight Switch W/O Headlights-On-Warning or Autolamp Delay System
G91D08408Courtesy of FORD MOTORS CO.
Fig 2: Testing Headlight Switch W/O Autolamp/Auto Dimmer System
G91F08409Courtesy of FORD MOTORS CO.
Fig 3: Testing Headlight Switch W/Autolamp/Auto Dimmer System or Autolamp Delay System
G91H08410Courtesy of FORD MOTORS CO.
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