One problem related to brake light on has been reported for the 1997 Ford F-350. The most recently reported issues are listed below.
While driving approximately 60 mph brake light started to flicker on/off. Consumer attempted to slow down by pressing brakes, but automobile was not able to stop. Consumer had to use both feet to push the brake pedal down. Effect of this was that consumer was unable to stop w/o warning, and was prone to a serious accident.