Ground control

[maych87]

I am fairly new to the megasquirt world. I bought a pre assembles ms3 3.57 with the expansion board. On my vehicle there is a resonance flap that opens at 5600 rpm. It is a solenoid that operates a vacuum valve to open the flap. The solenoid has constant 12v and is ground controlled. What is the easiest way to hook this up. Because I did not build my board I am a bit lost when it comes to modifying the board for anything I cannot find documentation on. Since I am using the expansion board for my injectors is there a way that I can hook up this resonance flap solenoid to one of the main board injector circuits since they are ground controlled? Thank you in advance for the help.

[jsmcortina]

Why not use one of the six ground-switch outputs on the MS3X. You'll find these documented in the Hardware Manual.

James