S10/T10 Blazer 4WD V6-262 4.3L (1989)
Wiper Motor: Description and Operation
Rear
With the wiper/washer switch in the run position, baftery voltage is supplied to terminal (C) of the wiper moton The ground circuit is provided through
terminal (B) and is grounded back through the switch. When the wiper switch is turned to the off position, terminal (A) is positive and the circuit is
completed through the park plate. A cam gear on the plate opens the circuit at the park position allowing the wiper to park at the proper location.