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 Lamp: Description and Operation

STOPLAMPS

Principles of Operation
Voltage is supplied at all times by the smart junction box (SJB) to the stoplamp switch. When the brake pedal is applied, voltage is then supplied to the high mounted stoplamp and the multifunction switch, which routes the voltage to the rear stoplamps.