Testing Wiper Motor

As shown, use a 12 V battery (1) to connect its (+) ("Red" lead wire (3)) and (-) terminals to terminal "D" and "Black" lead wire (4) respectively. Then motor (2) should rotate at 35 to 45 rpm.

Fig 1: Identifying 12 V Battery, Motor, Red Lead Wire & Black Lead Wire

Courtesy of SUZUKI OF AMERICA CORP.