Interesting. How do the diesels read the RPM since the flywheels do not have the timing tabs? Do they just count the starter ring gear teeth?

The motors I have are OM603 and OM606, so the tachometers from those cars will not be a direct fit, nor did they come with the sensors or any electronics. Also, sorry for being dumb, but what is the EDS module? Is it the diesel car equivalent of an ECU?

However, if the diesel sensor does just count the flywheel teeth, then I am guessing the components from the 2.2 or 2.5 190D may work.
What would one need to scavenge from a diesel W201 at the junkyard in order to make the tachometer function properly?

Thanks again!

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