Heads-Up Voltage Monitor
Testing Instructions


  1. Connect the red(+) & black(-) wire correctly up to the power supply.
  2. Now, turn on the power supply and bring the voltage down 12 volts or below. (LED should be flashing red).
  3. Increase the voltage by turning the knob and the LED should be now in the steady red position. (12.1v – 12.6)
  4. Keep turning knob to increase the voltage and the LED should be now in the steady amber position. (12.7-12.8)
  5. Increase voltage till you see LED turn steady green (12.9-15.1)
  6. Lastly, increase voltage till you see LED flashing green (15.2-above)
  7. If you have followed the directions correctly and its working correctly to what the directions say, IT’S A 100% WORKING MODULE!