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Wiper Motor Current

  1. Disconnect negative battery cable. Disengage linkage from motor. Unplug wiper connector. Connect Green lead from Starting and Charging System Tester (078-00005) to positive battery post.
  2. Connect Red tester lead to low speed connection (White wire on mating connector). Observe ammeter. Connect Red tester lead to high speed connection (Dark Blue/Orange wire on mating connector). Again observe ammeter. See Fig 1 . Motor current draw should not exceed 3 amps for either measurement.
Fig 1: Testing Wiper Motor Current Draw
G91C13567Courtesy of FORD MOTOR CO.
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