I need an electronic tachometer to run with a 4 cylinder engine that uses a magneto rather than coil ignition. I'm told that a standard electronic car tacho won't work. The one that I have gathering dust works off the main coil HT lead anyway (which a magneto engine doesn't have)
There must be a solution but it's eluded me - quite a lot does. Any of you knowledgable types know where to find one?