Yeah, I probably don't "need" a tach, but I would like one. Have you guys seen anybody retrofit newer gauges on an older bike? -Wade-
The new gauges are all digital and the old gauges used analog/ mechanical signals. Spend the cash on a gauge from Motogadget. They have several to pick from and you can get several with a tach. The come with a pick-up for the speedo and they use a signal from the negative side of a coil for the tach. in addition to the turn signal, nutral and high beam lights, they have a universal warning light so you can still get the low fuel warning or it can be used for the oil pressure light.