Firebird V8-305 5.0L (1982)
2.
Check wiper for LO speed operation, Fig. 14. If wiper has HI speed only, check the following items:
a. Solder joint at No. 3 wiper terminal.
b. Splice joint-field coil crossover splice.
c. Splice joint-black lead to field coil.
3.
Check relay switch as follows:
a. Remove small amount of insulation from black lead with pink stripe and connect test light between exposed wire and wiper housing.
b. Connect positive side of power source to terminal No. 2 and negative side to motor case. Install jumper wire from terminal No. 1 to motor
case. Observe if test light goes out once for each revolution of gear or if light glows steadily. If light glows steadily, relay switch contacts are
not opening and switch is defective. If light goes out each time drive pawl moves into relay switch slot, relay switch is functioning correctly.
WIPER HAS ONE SPEED, LO
1.
Check for grounded condition in the internal black lead that connects to wiper terminal No. 3.
2.
Disassemble motor section of wiper and check for grounded shunt field coil.
Fig. 16 Gear box relay terminal board resistor
WIPER HAS EXCESSIVE SPEED IN HI BUT LO SPEED IS NORMAL
1.
Check for open 20 ohm resistor and the resistor ground connection, Fig. 16.
Fig. 14 Connections to operate compound wound round wiper motor independent of vehicle wiring
