One problem related to brake light on has been reported for the 1998 Mitsubishi Galant. The most recently reported issues are listed below.
When applying brakes, the steering shakes. Brake shoes and rotors are worn out at 19,000 miles (very premature); brake light comes on constantly in vehicle - replace w/ brake fluid, wheels screech when making a slow turn - Mitsubishi was contacted and they are giving a hard time about replacing the brakes w/19,000 miles.