Turbo boost control

[stainless1]

I am adding boost control to my M84 used on a Bonneville Land Speed Car.
Can I ground the control solenoid and use Aux 1 for voltage or should I put 12v on the solenoid and use Aux 1 to control ground. Does it matter? Can it be done either way?
Thanks

[stevieturbo]

ecu outputs ground trigger.

Put 12v to the solenoid, and then the other wire is the ecu trigger.

[Stephen Dean]

Hi,

Wire it as Stevie said, it is the better option to have the ECU providing the ground than the power for solenoids and similar.

[stainless1]

Thanks, in trying to set it up on the computer I saw that Aux 1 can't do PWM with volts, only ground. Looking for a switched power to tie into and will put the ground lead on Aux 1 or Aux 3.