Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Wiper and Washer Systems: Description and Operation


Windshield wiper operation is controlled by a dash or steering column mounted switch. The wiper feed circuit is protected by a fuse which is located in the fuse block on most models, or in an in-line fuse holder on some models with pulse wipers. A circuit breaker, integral with the motor brush holder, protects the motor against overload. Pulse wipers, available on most models, use a variable resistor, a pulse control module, and/or a modified wiper motor to provide a delay wipe mode.