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Author Topic: Wiring diagram for brake fail switch  (Read 686 times)

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Offline LongTimeFordMan

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Wiring diagram for brake fail switch
« on: March 10, 2017, 09:18:44 PM »
I found this diagram for the brake fail light switch for a ford on a ford forum

Apparently the circuit is wired from the "run" position on the ignition switch, thru the indicator lamp, then to the switch on the "combination valve"  or proportioning" valve which grounds when there is a pressure difference between front and reat brake circuits.

There is also a connection to the starter relay which causes the light to light when the ign switch is in the "start" position.
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Red 1973 pinto wagon DD, SoCal desert car, Factory 4 speed, 3.40 gears, Stock engine, 14" rims and tires, 60 K original miles
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