I have a harlan shiftlight and it does not work the way its supposed to. Its wired up correctly (power, grnd and neg coil). It will sometimes flash at the rpm its set too, but not always. The when I set it to a different rpm, it decides it doesnt wanna work. WTF?!!? I would NEVER recommend this junk "shiftlight" to anyone! Can anyone offer any help? I've tried emailing harlan a few times and NEVER get any responses. What a waste of $70 this light was..