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Stoplamp Switch C278

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Stoplamp Switch C278
G03245925Courtesy of FORD MOTOR CO.
STOPLAMP SWITCH C278 CIRCUIT REFERENCE

Pin Number (s) Circuit Designation/Description Normal Condition/Measurement
1 810 (RD/LG) stoplamp switch output 0 voltage, less than 5 ohms between the stoplamp switch and the SJB.
2 10 (LG/RD) B+ power supply circuit Greater than 10 volts with the ignition switch in any position.
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