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

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Brake Switch (Cruise Control): Description and Operation

PURPOSE
The Brake Pressure Switch acts as an additional deactivation device should brake switch fail.

OPERATION
Depressing brake pedal with additional pressure creating 5 to 10 lbs in brake line, causes brake pressure switch to open, thereby removing voltage and current from speed control module.