I put a 1989 engine into a 1972 Moto Guzzi bike. Everything works except the Tachometer because it was designed for a twin cylinder single coil bike and my engine is a twin cylinder dual coil model.
Basically the tach wants to see two pulses from the coil for each revolution and is seeing only one. I tried hooking up both coils with a diode inline to keep them from interfering with each other but I went from half-working to not working.
There are aftermarket solutions to this problem from the hot-rod world but I was wondering if there was something simple and cheap to fix this.
TIA, Guzziownr
