Vac operated, tach operated, whatever. Every car I've ever had with a shift light, I shift before it comes on anyway, and every car without one gets shifted that way too.
I liked it when I first started driving, but the light would stay on in top gear unless you were decelerating -- rather irritating after a while.
It looks so futuristic. It'll look so out of place if i placed it on my crx. All i can say is... nothing beats SG2.... for now , but a nice find Dav72.