Water Methanol Pump Diagram


This article features pump diagrams for wiring in your water methanol pump, including both high-side (recommended) and low-side wiring configurations. Follow these recommended diagrams to ensure proper control and reliable performance, allowing you to choose the setup that best fits your application.

High Side Method (Recommended)

diagram, water methanol, WM pump

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High Side Method Wiring:

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

Low Side Method

diagram, water methanol, WM pump

Products:

Low Side Method Wiring:

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