@ScaronX2 ill say they don't ive tried straight wireing branch wire adapters and ether they dont work or they cross fire the coils is a hood orniment now runs so much better without it
Tachs dont seem to work to well on the M50 (conflict of wire location and interference). Besides you really dont need one. Just listen to the engine and it will tell ya when to shift. Red line is 8500 Rpms.
you should show a video of you revving the bike and the tach in operation.
i've never seen a tach on an m50, suzuki doesn't seem to offer one as an accessory. yours must be an aftermarket. pretty cool, nevertheless.