I need to find out where I can pick up the tachometer reading on a 2001 CLK55. I was told it was the pink wire on the third plug on the ECU from the right, bottom left hand corner. It did not seem to work.

I thought it might be under a different name, maybe crankshaft sensor XXX.

Thanks.

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2001 CLK55, Intercooled Procharger, HRE's, Brembo's, bunch of other stuff...