What problems are you having, exactly?
How many wires are coming out of this tach? The original has 4 (as you know)....a + and a - for the light, and a + and a - for the tach itself.
Is there a Model # stamped anywhere on the tach?...I'm sure if there is, you have already searched the 'net for info.
Is there any small window, or switch on the backside where you can switch the "poles"?
I'm about 90 % certain the Kawi tachs are a 6 pole tach.....yours may have extra wires to adapt to 4 pole, 6 pole, etc...
As a side note, many thanks for your tip several months ago, sprocket. I picked up one of those gold resistors from Wahl Bros back in the spring. Finally installed it in November....absolutely cured the "bouncing tach" syndrome for both of my tachs...
,
If I can ever get away from working 6 or 7 days a week (or retire
) I will post up some pics.
Rick