brake lights stuck on
#1
brake lights stuck on
I got home today from a quick drive to the hardware store in the '54, and noticed my brake lights were stuck on. Must have been on for awhile, because my lenses are damaged from heat. I am assuming I have a bad brake switch, but just incase is there anything else I should look into? Thanks.
#2
The original type pressure switches are known for failure from corrosion, internal and external. Brake fluid, being hygroscopic, draws moisture that causes corrosion, internal and external. That is one reason why brake fluid should be changed periodically. Of course, make certain the pedal is returning all the way. I went to silicon fluid back when I was playing with this old stuff on a regular basis. I've read that the newer fluids are better.
These pressure switches fail another way in that they take more pressure to activate the light. This is dangerous in that you roll up to a stop while braking easy and the brake lights never come on. Many rear end accidents because of this.
These pressure switches fail another way in that they take more pressure to activate the light. This is dangerous in that you roll up to a stop while braking easy and the brake lights never come on. Many rear end accidents because of this.
#3
#5
The master cylinder is firewall mounted.
Studebaker cars/trucks used the same switch (#666858 same as C1AZ-13480-A). The master cylinder mounts on the frame rail next to the brake pedal, but this ain't no Studebaker.
This switch is notorious for getting gummed up with dirty brake fluid.
C1AZ-13480-A (replaced 91A-13480, 0A-13480, 11A-13480) .. Brake (Stop) Lamp Switch (Motorcraft SW-24) / Available from Ford and a gazillion parts stores.
Applications: 1939/66 FoMoCo vehicles.
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