Cool cheers Lee, pin11 and 2 are the same output. They are connected together via a track on top of the ceramic pcb, ill double check this when I get in. Cars using the IDM as a tach signal usually have a small box inline with the tacho, this filters out the small pulse the IDM gives when there is no coil output.


EDIT**
Just had a look at the document you linked and that says the same about the IDM signal with a filter inline with tach. So the FRST uses pin10 and not 2 as standard?, its a pain trying to find out which cars use what. Most American cars seem to use the IDM to drive the tacho and I assumed the fiesta RS would be the same. Would be good to know as im including a tach out with a board im doing at the moment.

Rob,