How do I get the tach working agai0? (W124, 300TD, 5 speed)

[Corvo Gold]

I've spent a lot of time and money resurrecting my 1987 300TD. It's been a great learning experience and I love the car. My stick shift conversion is fully sorted, as is the HVAC, suspension, and brakes. Not bad for a car that I think was left for dead over the course of several years. Unless some unknown horror is lurking in the background, there are only niggling things left to fix.



One such niggling thing is that the tachometer ceased to work after I installed the 5-speed. My understanding is that in an automatic car, the tach pickup gets its signal from the ring gear. Now that there's a .411 in place of the auto trans, how do I get the tach going again?


Many thanks,


Corvo Gold
1987 300TD, converted to stick shift