Product details:

Proform Parts 67005SC: Shift Light, Adjustable, Stand-Alone, 3,000 to 12,000 rpm, 4/6/8-Cylinder, Silver, Amber Light, Each - Proform adjustable shift lights feature an adjustable rpm dial in the back--no need to buy a separate rpm module or "pill." Plus, they're easy to use--just dial-in your rpm and go. They come with a sturdy mounting base and are available in a variety of colors.