S10/T10 P/U 2WD L4-121 2.0L VIN Y 2-bbl (1983)
Fig. 14 Connections to operate round wiper motor independent of vehicle wiring
INTERMITTENT OPERATION
1.
Check solder connections at wiper terminal board.
2.
Connect wiper to operate in ``LO'' speed, Fig. 14. Connect ammeter (range 0---30 amps) in feed wire circuit to wiper and observe current draw.
Allow motor to run until it becomes hot. Current draw should be 3.5---4.0 amps. If not within specifications, motor is defective.