Holley Terminator needs a brake light signal.

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Rt Jam

G-Body Guru
Mar 30, 2020
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Ontario Canada
Installing a Holley Terminator. It only needs a few wires like Key on power, battery power etc. All relatively easy.

Next on the list is a brake light input for the transmission controller. Seems easy enough, most cars have 12v into the brake light switch and 12 out when the brake is down.
but I have 3 switches and many wires. This car had a Powerball braking system and cruise control.

What is not needed?
 

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ELCAM

Royal Smart Person
Jun 19, 2021
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Off the top of my head, need to look at a diagram to be 100% sure.

Pink and purple is for the TCC lockup on a non computer car.

Orange and white (and Blue) is for the brake lights.

Brown and gray is for the cruise control.
 

Rt Jam

G-Body Guru
Mar 30, 2020
579
558
93
Ontario Canada
Orange and white (and Blue) is for the brake lights.
Blue, orange, white. Sounds like a match. I have 12 v at both Blue and White with brakes on.

The switch with lots of pink wires also had a vacuum line, probably for the cruise. Which I'm not using.


I'll check the pink wires for power when brakes are on. If it's for torque converter. That's exactly what I need the signal for.
 

ELCAM

Royal Smart Person
Jun 19, 2021
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The TCC switch is a normally closed switch when you press the brakes it turns off the 12V going to the TCC solenoid.

The blue or white is the signal you want or change the top switch (Purple pink wires) to a regular brake light switch and use that.
 

Built6spdMCSS

Geezer
Jun 15, 2012
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Florida Beach
Pink and purple is for the TCC lockup on a non computer car.
Even on the Computer controlled cars them wires are the same and the circuit works the same, just a 12v signal to the computer instead of the TCC Solenoid.
 

64nailhead

Goat Herder
Dec 1, 2014
5,660
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Should be the blue wire-was in mine. But I have a different switch. Very easy to check though with a jumper wire.
 
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