Booster Installation
The booster can be changed without opening any hydraulic lines. Remove the master cylinder nuts, pull the MC away & lay it to the side, remove the booster nuts & pushrod under the dash, unhook its vacuum line, and pull it out.
The stoplamp switch is commonly abbreviated BOO (Brake On-Off). The later style switch is call BPP (Brake Pedal Position), but that term is sometimes also applied to this older style.
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