Wiper Motor Current Draw Test

Disconnect negative battery cable. Disconnect linkage from motor. Unplug wiper connector. Connect Green lead from Starting and Charging System Tester (078-00005) to positive battery post.
First, connect Red tester lead to low speed connection (White wire on mating connector), and observe ammeter. Then connect Red tester lead to high speed connection (Dark Blue/Orange wire on mating connector), and again observe ammeter. See Fig 1 or Fig 2 . Motor current draw should not exceed 3 amps for either measurement.

Fig 1: Testing Wiper Motor Current Draw (Aerostar)

Courtesy of FORD MOTOR CO.

Fig 2: Testing Wiper Motor Current Draw (Explorer & Ranger)

Courtesy of FORD MOTOR CO.