Hondata Boost Control Solenoid Wiring Question

[driftnaaasty]

I am waiting for a pin to arrive since Hondata does not provide the wiring necessary to add the pin (receptacle on B16). I am aware that I will run a wire with a 10A fuse to the solenoid from this pin but I am wondering where do I connect the ground. Do I need to use one of the switched grounds on the ecu and if so which one? There are a few. Or do I simply ground to the chasis?

Thanks

[Spunkster]

All you need is chassis ground.

[driftnaaasty]

Thank you!!