Quote:
Originally Posted by cooperino
I think the CD system is what he is trying to achieve. I would be looking into inductive CD tachometers
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The desire is to run the factory tach installed in the dash of the tractor. The signal it wants is most similar to a points ignition/early auto electronic ignition. Why Kohler chose to provide that type of output from the SAM modules on the CH series twins is a mystery (perhaps just a coincidence). It seemed to me I saw a post here at OCC where a owner was running a tach that way on a diesel cub.
The dummy set-up was just a test unit to make sure the tach wasn't the issue, then I thought well I'd just put a pick-up nub on the spacer behind the electric PTO and use a auto distributor pick-up and a GM 4 pin HEI to convert the signal (both cheap parts), but that signal isn't a high enough output voltage for this tach without the coil in the circuit (feedback from the neg. pole on the coil provided the voltage spike necessary to run the tach), don't want an extra coil just hanging around under the hood. Has to be a more "elegant" solution.