The Park Brake Warning System consists of three main components.

Power is supplied to the system from the Gauges Fuse 5 through CKT 39 (PNK) to the Instrument Panel Cluster. Voltage is routed from the Instrument Cluster through CKT 33 (TAN/WHT) to the Daytime Running Lamps (DRL) Module. Voltage is then grounded through CKT 1134 (PPL/WHT) through the Brake Switch, which is internally grounded to the frame.