Current Classifieds

Free 2.0L Valve Cover

Date: 01/03/2023 04:27 pm
2.0 Mickey Thompson SUPER RARE Rocker cover and belt guard
Date: 08/22/2017 09:21 pm
Various Pinto Parts 1971 - 1973

Date: 10/01/2020 02:00 pm
Sunroof shade
Date: 06/19/2019 01:33 pm
1975 Pinto bumpers
Date: 01/20/2018 07:51 pm
1973 Pinto Runabout

Date: 08/17/2022 06:27 pm
Wagon hatch letters
Date: 12/31/2023 04:24 pm
Rear brake shoes

Date: 01/23/2017 05:01 pm
WANTED: 1979 Bumper End Caps - Front and Rear
Date: 02/16/2019 10:46 am
KYB shocks

Date: 02/08/2017 07:09 pm
rear hatch back louvers

Date: 04/18/2017 12:44 pm
1978 fuel sendng unit
Date: 05/27/2020 09:54 am

Author Topic: Wiring diagram for brake fail switch  (Read 1178 times)

0 Members and 1 Guest are viewing this topic.

Offline LongTimeFordMan

  • PCCA VIP
  • Pinto Sr. Member
  • ***
  • Posts: 457
  • FeedBack: +182/-0
  • Gender: Male
  • 1973 Red Pinto Wagon

  • Total Badges: 6
    Badges: (View All)
    Fifth year Anniversary Topic Starter Signature Windows User Linux User Mobile User
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.
Red 1973 pinto wagon DD, SoCal desert car, Factory 4 speed, 3.40 gears, Stock engine, 14" rims and tires, 60 K original miles