[Panzermann]

There is none as such. The bike has a camshaft rotation sensor which has a lead to the BMSX ECU, and the BMSX tells the Instrument Panel processor, via the CANBUS, what revs to display on the tachometer readout.

The leads from the camshaft sensor are Yellow and Blue/Yellow.

 

[Panzermann]

So how would you wire up a analog tach

Without wishing to appear flippant, I think the answer is, ‘With great difficulty.’

Any tapping into the existing camshaft sensor is fraught, so you either need some very smart circuitry that taps into the CANBUS and reads the ECU rpm data and converts it to a pulse signal, or you attach another sensor (e.g. Hall Effect) somewhere. The flywheel timing position plug on the side of the crankcase would be an option, but I don’t know how you would safely secure a magnet to the flywheel.

Let us know how you go.

Maybe it would be easier to trade up the the 1250 with its glamorous TFT screen.

 

[Panzermann]

A bit of Googling reveals there are devices that tap into CANBUS circuits to pick up rpm data and convert it to a signal pulse.

e.g. https://www.soundlabsgroup.com.au/p/CANBUS-CB2OBD/CANBUS+CB2OBD+Speed+and+RPM+OBDII+Interface

CAN Bus RPM Pulse Interface | CANNECT RPM