When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I posted Zeitronix's reply about my tach signal pickup question there. I wouldnt worry about picking it up at the ECM, you can pick it up just about anywhere. Mine is tapped into the green wire (tach signal) of my autometer tach.