yes I have an mzb or powerdynamo ignition (now called vape) which requires an eedm type tacho with a positive pulse. (I sound like I know what im on about but im just repeating parrot fashion what I was told)
and I bought the mmb tacho from the link below and its simple to wire up loads of instructions etc
this particular mmb tacho is designed to work with the high voltage/current that the vape ignition has at the coil where you take your feed from.
older ones burnt out so they beefed it up a bit