[kjewer1]

I don't see how you could put a stuter box on a switch, like hand operated. My first gear is about a half second long, no way I could get it off before the shift to second.

What I would do is use the clutch switch, but hijack both leads. Run one to ground, and one to the sutterbox. There is your switched ground to activate it. The switch in stock configuration is also a switch to ground, but the system puts 12 volts on it (IIRC), so that is probably what you are measuring. Best thing to do is cut both leads so you know extactly what you have hooked up to them.