Wiper Electrical Diagnosis

For normal speed, connect +12v to pin 5 and earth to pin 1. An ammeter in circuit should show about 2 amps.

For fast speed (2-speed wipers only) connect +12v to pin 3 and earth to pin 1. An ammeter in circuit should show about 4 amps.

To park the motor connect +12v to pin 5 and earth to pin 4. To park the motor it must first be moved away from its parked position by connecting 12v and earth as for the normal and fast tests. An ammeter in circuit should show about 2 amps.