A test light is your greatest tool for electrical work. $5 or less. The switch is down on the engine side of the firewall down low by the brake pedal shaft. Ground the clip of the test light & insert the prod into the terms. one at a time. Put the test light on the 2 terms. One should be hot all the time. Press on the brake pedal & both should be hot. If not the switch is defective. It is held on by 2 screws from the inside. If the arm on the switch does not follow the brake shaft then it is obviously defective.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
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