The Micro Dynamics Super Shift gives the user ultimate shift light accuracy. Both upper and lower shift points can be independently set for total control and 9 ultra bright LEDs give an easy to read display.User settable lower and upper shift points9 LEDs with user settable brightnessSuitable for engines from 1 to 8 cylindersThe Super Shift differs from regular shift lights by providing the driver with an indication when the shift revs are approaching. When the settable lower shift point is reached the first green LED illuminates followed by a 2nd as engine revs increase. Three yellow LED's then illuminate incrementally until the high shift point is reached when the final four red LED's flash. This sequence provides the driver with a moment to time the shift perfectly.Suitable for engines of 1-8 cylinders and with most negative earth ignition systems, including CDI ignition with a tachometer output. The unit is adjustable between 1,000 and 40,000 sparks per minute, which equates to 500