Never miss a shift again with this MSD programmable shift light. You can set it to flash at any RPM between 100 and 15,900, so it's perfect for everything from street cars to all-out race machines. It has six super-bright LEDs that are easy to see even in daylight. The kit includes an easy-to-install GMR (Giant Magnetoresistive) pickup that reads RPM from a spark plug wire—no need to tap into your ECU. Just set your desired shift point, mount the light where you can see it, and wire it up. A must-have for drag racing, track days, or any performance driving where watching the tach isn't ideal.