Looking for some help with this. I attempting to wire aftermarket tach up to a full race car. So wiring has been disconnected or dead ended. Where can I pick up the digital The tach is a Logitech model.
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You can pick the rpm signal right off the ECU- black/blue off pin 6 (87 325i, in my case)
which changes to black at c104, hits c235, then c104, then the cluster.
If you have a late car, download the etk, and the details are on p 6210-5.
The etk is excellent, once you figure it iut...
tnow, sometimes I just mess with people. It's more entertaining that way. george graves
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