oh yeah, and you'll need three or four (depending on how many cylinders your K has) 10K resistors to put in a harness you'll have to fab up for the tach to work. I wired mine up off the negative side of the coils. The harness is just a yoke that combines the signal off each coil into a single wire, and sends that signal to the tach. You'll need a 10K resistor between each coil and the central wire that runs to your tach.
My speedo isn't working yet. I'm gonna try placing the magnet in the allen head recesses on my front rotor. People report mixed results with this, and Danmoto says that doing it that way can cause magnetic interference. I haven't glued the magnet in yet because I just got a new front tire and front wheel bearings, and I'm waiting till the front wheel is back on to install the magnets. The hall sensor is mounted already. Most people report that you should forget using the formula to calculate your speedo and just use a GPS speedo to match. that's what I plan to do.
