Ford truck buzzer/dinger - YouTube Nov 30, 2009After 250,000 miles my buzzer decided it didn't want to buzz anymore. After researching, you can change a buzzer out for a dinger/chime from any Ford with the same plug. Also the wiring for the The brake electric motor light stays on on my F800. What The brake electric motor light stays on on my F800. What is the probale cause? - Answered by a verified Technician Have a 1998 Ford f800 with a 8.3 cummins brake pedal will not go down and brakes are locked up. What is the problem? I have a 1990 F800 dump truck with air brakes.