Well it started as a suspect Tach which was quickly diagnosed as faulty chargin system. The stator is giving 16v A/C at idle and the ignition is giving 12v. The diode check failed and the stator is showing about 6ohms instead of the suggested .15 (if I remember correctly). I almost had a heart attack when I saw that mercury wanted $440 for the volt regulator/rectifier. There are aftermarket kits that look like a plate and two smaller units in place of the single large unit. <br />Anyone use any aftermarket parts in place of the factory part? <br />Any other source for this? Figures my motor came from the few years they used the high $ parts. The other question is that some reference a 4 yellow wire stator for the replacement kit and mine has only two ??