Red Brake Warning Indicator: Operation
WARNING: This page is about a different car, the 2004 Dodge Intrepid, 2004 Chrysler Intrepid, 2004 Chrysler Concorde, and 2004 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
The red BRAKE warning indicator lamp is supplied 12-volt ignition feed anytime the ignition switch is on. The indicator lamp is then illuminated by completing the ground circuit either through the parking brake warning switch mounted on the parking brake lever, the brake fluid level switch mounted in the master cylinder reservoir, or the ignition switch when in the CRANK position.