Bike has uneven firing-order, so that may mess up tach if both are used. Factory tach uses just left coil, so any aftermarket tach can be connected similarly.
These dashes are pretty simple. In old days, I used a bicycle computer which was all self-contained and battery powered.
Recently installed Trail Tech Vapour dash. Took about 45-min with additional features of ambient-temp and coolant-temp. Only tricky part was aligning wheel-speed sensor just 1mm from wheel-magnet.
So all copycats of this or Koso should install similarly. If you're not good at soldering wires, might want to look up YouTube videos and practice. All wires should be crimped, soldered and shrink-wrapped for good electrical connection and corrosion resistance. Otherwise you'll have inconsistent signal that'll drive you crazy and waste tonnes of time troubleshooting.
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