Rich, i have checked the earths,( first thing i done)
The trigger signal is getting to the ecu, was second thing i checked

All the pins on the Ignition amp are correct, ie the earth works i have +ve @pin 4

Hence my frustration at not sorting the problem as nearly all the obvious, and some of the not so obvious stuff i have checked.

Stu, sorry for not clearly spelling out that its on a S1, and that its not ran since changing over to it as i cant get a spark!!!

the crank pulley still has the four lugs attached