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Old 01-23-2023, 06:24 PM   #2
Richard
Senior Member
 
Join Date: Dec 1999
Location: Southern California
Posts: 2,966
Re: Brake line electric male blade connector

That is the proportioning valve. On a stock 71 it would be right next to the master reservoir. The wire would connect to the "Brake" trouble light in the instrument cluster. Provides a ground to turn light on typically if fluid/pressure loss in the front or rear brake system.
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Richard
1972 K10 Custom Deluxe SWB Fleetside
My build https://67-72chevytrucks.com/vboard/...d.php?t=800746
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