Drag Racing: TBrake & Steering Wheel Buttons Diagram


This article provides detailed wiring diagrams for setting up a trans brake solenoid along with two steering wheel-mounted buttons for Bump and TBrake/Scramble functions. These diagrams help ensure proper connections for smooth operation, allowing precise control over launch and boost management. Use these guides to streamline your installation and achieve a reliable, race-ready setup.

button diagram, tbrake diagram, TBrake and Buttons Diagram

Products:

SSR Wiring:

  • Pin 1 – Supplies Power to Solenoid
  • Pin 2 – 12V Battery Power to SSR
  • Pin 3 – 12V Switched Power to SSR
  • Pin 4 – ECU Output to SSR
    • Hi-Current  – Ground Trigger (Recommended)
    • PWM Out – Ground Trigger
    • Injector – Ground Trigger
  • Flyback Diode
    • This needs to be installed across the (+) and (-) of the solenoid
    • Recommended installed at the solenoid
  • Pull-up Resistor
    • This is installed between Pin 3 and Pin 4 on the SSR

Steering Wheel Button Wiring:

  • Wire One – Connect to Ground
  • Wire Two – ECU Input
    • Digital Switched In – Ground Trigger
    • Digital I/O – Ground Trigger