ok, finally i fixed my tach problem. and hopefully your buddys kakita. see, on the back of the tach, where the 4 wires run out, there should be 2 loops, a brown and a orange loop. mine were pushed inside for some reason, so i had to fish around with a paper clip with a hook on the end to pull them out. then, all you do, is for a 6 yl, cut the brown one, and for a 4 cylinder cut both loops. then just tape the ends off sepratly. thats all there is to it. this comes straight from Autometer, the contacted me back. its about time!