Originally Posted by stu21t

http://www.siipicossu.com/manuaaleja/electrical%20diagram%20cosworth.tif

this is the diagram which shows the wire from tfi module (ignition amp) to coil is green and goes to the rev counter,

if the rev counter is definately meant to be taken from the negative of the coil then mine and my m8s cars are back to front on the coil. lol