The Park Brake Warning System consists of three main components.
| • | Daytime Running Lamps (DRL) Module | 
| • | Park Brake Warning Switch | 
| • | Instrument Cluster (I/C) | 
Power is supplied to the indicator lamp bus from the Gauges Fuse 4 through CKT 39 (PNK) to the Instrument Cluster. Ground is applied to the BRAKE indicator lamp by CKT 33 (TAN/WHT) through the Daytime Running Lamps (DRL) Module and from the DRL module by CKT 1134 (PPL/WHT) through the Brake Switch, which is internally grounded to the frame.