Reply to "Tachometer"

Dennis,

I don't recognze the dizzy. The late model Aussie Cleveland engines had an oem Bosch electronic ignition, none of us American blokes would recognize it, so I suspect that may be what we're looking at. I can't say whether or not there was a separate ignition module with the Bosch distributors, or if it is all contained within the dizzy.

FYI: The distributor hole in the block for the Bosch distributor is a different size than the hole for the breaker point distributors found in earlier Clevelands, therefore breaker point distributors & American Duraspark distributors don't fit Australian blocks designed for the Bosch distributor & vice versa.

However, so long as your ignition module is not producing multiple sparks (like an MSD) the tacho will work just fine hooked to the negative term of the coil.

We're back to where we were before, need to check that the tacho is getting 12 volts, has a good ground, and is connected to the neg terminal of the coil.

Your dizzy friend on the DTBB, George