'Tacho driver module for coil-driven rev counters
Suitable for Megasquirt, Megajolt and many other ECUs the tacho driver allows you to retain your existing coil driven rev counter. If you have a recent rev counter accepts the 5 volt output of most ECUs then you do not need one of these.'
the attached picture is of the product, it is just 4 wires to each negative from the coils running through...something.....and then to the tacho, or in my case the pickup point for the ecu? i'am going to give it a start at the weekend, anyone have any wisdom whether it will work or not...lol
