Quote:
Originally Posted by sirdaft1
How are you guys running a separate water pump?
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I can tell you how to run it separately without ECU being involved.
The water pump has 4 pins. The pin 3 is not used because is for test only. Pins 1 and 4 are for power supply and pin 2 is for PWM.
Here is the pin out:
Pin 1 is battery voltage
Pin 2 is PWM signal
Pin 3 is a test/BSD signal
Pin 4 is Ground
Supplying +12v to Pin 1 and pin 2 will make the pump run full speed after about 5sec delay (wake up time)