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ok soo i boguht a jdm sport tachometer.....every thing works but the tach part....after figureing out the stock tach must be disconnected i did that and the after market tach stil doesnt work....does anybody know how to help
i have the power running off the igniton switch the light is spliced into the light switch and the tach is hooked ^ to the stock tach wire coming off ther pcm everytihng works but the tach part of it