Wiper Switch in "DELAY" Wash Button Activated

Activating the wash button to start the wash cycle overrides the delay mode and provides continuous wiper operation in "LO" speed during wash cycle. At completion of wash cycle, the wiper motor automatically reverts to the "DELAY" mode of operation.

When wiper switch is in the "DELAY" position, the gearbox relay coil circuit is complete. This completes the 12-volt circuit to pulse relay. However, the pulse relay coil circuit is controlled by the timing circuit during pulse operation.

In order to override the delay mode during wash cycle, a by-pass circuit around the timing device is accomplished as follows:

• Activating the wash button completes pulse relay coil and washer pump relay coil circuits to ground. This causes wiper motor and pump to start at once regardless of the delay mode time setting.
• As soon as the wiper starts, the pump also starts, which causes the override switch contacts to close. This provides a by-pass circuit to ground for the pulse relay coil.
• At completion of wash cycle, the projection on rim of ratchet gear opens the override switch contacts, which opens pulse relay by-pass circuit, at which time wiper motor reverts to pulse or delay mode of operation.