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Brake Light Switch (Stop Lamp, Cruise Control, Above Pedal)

This category on the website [ Switches and Wiring ] we are giving you all of the information related to the individual switches in the Buick Turbo Regal, along with the associated wiring, connector plugs, etc.

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VEHICLE APPLICATION:

Buick Regal, T-Type, Turbo T, Limited, Grand National, GNX

SWITCH NAME:

Brake Switch

PURPOSE OF SWITCH:

turns on brake lights
turns off cruise control

TURNS ON-OFF / FUNCTIONS / USED WHEN:

used whenever you press or release the brake pedal

LOCATION IN VEHICLE:

interior, behind dash, above brake pedal

ORIGINAL GM PART NUMBER:

?

SWITCH / BASE COLOR:

black, white

CONNECTOR PLUG COLOR (SWITCH SIDE):

black, white

WIRES ATTACHED (SWITCH SIDE):

n/a

CONNECTOR PLUG COLOR (HARNESS SIDE):

black, blue

NUMBER OF WIRES ATTACHED (HARNESS SIDE):

see below

COLOR & PURPOSE OF (HARNESS SIDE) WIRES:

TAIL BRAKE LIGHTS:

5 wires, 1 has a blue connector (harness side)
(black switch base [bottom] with white case, black plunger, brass tabs)

[this is the OPEN side]

purple “A”, goes to TCC solenoid (“A”)

[2 wires on 1 terminal]
pink-black “B”, goes to ECM/SOL fuse
[other pink-black wire goes to junction with other things]
(junction also connects to coolant fan delay relay “C”)

white “A”, goes to turn/hazard switch assembly

[this is the CLOSED side, with brake pedal depressed]

light blue-black “C” goes to (several junctions) then light blue wire to high level stop light (chmsl)
(also connects with coach lights)

“D” = ?

orange “B” goes to hazard flasher & stop haz fuse

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With K34 Cruise Control option:
(white switch)

[open with brake pedal depressed]

2 wire, blue connector (on the switch):

gray “A”, goes to (junction) green wire to cruise control switch (“on”)
(also connects to gray wire to cruise control module [“A” cruise on input electronics power] )

brown “B”, goes to cruise control module [“G” brake input]

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PHOTOS OF SWITCH AND CONNECTED WIRES:
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84-85 ecm iac tcc wg aldl evrv ac brake sw

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OTHER NOTES:

Called “Brake Switch” on diagrams.

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Here’s all of the Switches in the Buick Turbo Regals:
(you can click these links to go direct to these posts)

* A/C High Pressure Cut-out Switch (Back of Compressor)
* A/C Pressure Cycling Switch (on Accumulator)
* A/C Pressure Line (Under Alternator)
* Blower and A/C Clutch Control Module Switch (HVAC Fan Speed Control)
* Brake Pressure Switch (in Prop Valve)
* Brake Switch (Above Brake Pedal)
* Coolant Fan Temperature Switch (Under Throttle Linkage)
* Cooling High Temperature Switch (Manifold Front Passenger Side; Idiot Light)
* Cornering Light Switch (Regal Limited Models)
* Cruise Control Switch (Lever)
* Cruise Control Brake Switch
* Defogger Control Switch (Rear Defogger Button)
* Dome Reading Lights Switch
* Door Jamb Switch (Both Sides)
* Electronic Air Conditioning Touch Climate Control (Electric Touch A/C)
* Gear Selector Switch
* Glove Box Switch (for Light)
* Hazard Switch (Emergency Flashers)
* Headlight Switch
* Headlight Dimmer Switch (High Beam)
* Hobbs Switch (Digital Dash Cars)
* Horn Button Switch
* HVAC Fan Speed Control Switch (Heater A/C Control Head Blower Switch)
* HVAC Mode Control (Heater A/C Control Head Mode Switch)
* Ignition Switch
* Ignition Key Warning Switch
* Instrument Cluster Dimmer Switch (Dash Lights Brightness)
* Neutral Safety and Backup Light Switch
* Oil Pressure Switch
* Overtemp Hot Switch
* Park Brake Switch (Emergency Brake)
* PowerMaster Brake Switch
* Power Door Lock Switch (Both Sides)
* Power Seat Switch
* Power Window Switch (Both Sides)
* Radio Button (on/off Switch)
* Rear View Mirror Map Light Switch
* Seat Belt Switch
* Sunroof Switch (Astroroof Moonroof)
* Theft Deterrent Warning System Tamper Switches
* Trunk Light Switch
* Trunk Release Button
* Turbo Power Light Switch (Digital Dash Cars)
* Turn Signal Switch (Lever)
* Twilight Sentinel Switch (Rotary Dial)
* Under Hood Light Switch (engine bay compartment)
* Vanity Mirror Light Switch (Passenger Side Visor)
* Wiper and Washer Switch

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