The grey wire between crankshaft position sensor and ECU is where to pick up a pulse. Be careful chopping any wires that lead to and from the ECU � make sure you get it right! Solder and heatshrink is the way to go.

As for the rev limiter, I think it�s set somewhere around 7200rpm on the XT660 motor?

I had one of these fitted to a quad and found that fitting a push-button switch between the orange wire and earth made life a lot easier with programming.

You can still get the fitting instructions here� http://www.datatool.co.uk/pdfs/revlight_ii.pdf

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