Nice. I just don't miss the old reset buttons on the desktops, just an extra 2 seconds of holding the power button to shut it off should it lock.
This is all mine is below, just a manual momentary switch for shutdown/startup leads as described, with the external LED leads from the PSU hooked up so it flashes the status.
Nothing fancy, but I didn't want to really do more than was necessary, and I debated on whether or not to even have this visible as drilling visible holes into a new car isn't my usual first choice.
I'm still ****ed they put self-tapping screws in the front facade for the front license plate that's required in MD. The bastids.