Im talking about the model t and such early 1900 car break system
did you check the trans fluid? check the book to make sure you check with the car running or not (some you check off) and on level ground
you need to take it in to have it serviced real soon the light is trying to tell you that it is in need of repair,,i own a repair shop,,and when the light comes on in those cars,,it is indicating that there is problem with the flow of the fluid in the transmission,this is a sign that it is not getting the proper amount of pressure to the valve body,,this is probably caused from lack of fluid,,or a dirty filter,,and fluid in it,,at least take it and have it looked at,there is s sensor on the transmission that will make it go to like a neutral state,if it does not receive the proper amount of pressure,,it needs serviced real soon or it may cause more serious problems with it,, i hope this help,s.
They used the same type of brakes found on carriages of the era. Which were brake shoes on a lever system.
Some cars had internal expanding drum brakes. Some used an external band brake on a drum, or a combination of both. Front wheel brakes didn't come out until later. Hydraulic brakes were introduced by Chrysler in the 1930's. Rolls Royce and Bentley used a weird braking system designed by Hispano Suiza that ran off a small power take off clutch on the transmission. The Model T Ford used a series of bands and clutches inside the transmission to stop the car. It had no brake drums on the wheels.
Brake systems in the early days were mechanical. Various designs were tried, but by 1910 the expanding-drum type was the most common.