I think I'm even boring myself now, but here goes. This evening I made some diagnostic progress. I re-did the "get a spark out of a coil" test on the bench with a spare 12v battery, spare coil, plug lead and spark plug and some wires. Easy that got a spark, So I repeated the same test in the car with the coil in the car and battery. Lo and behold a spark. The coil works. Then just a quick check with the same king lead wiring (well it was better earthing that did the trick), plus the ignition box and the dizzy driven from my drill (circa 500 rpm). Nothing. I also used a pin to properly check the continuity of the squished wires from the dizzy, all good. Then from my readings linked above and this link I got the old ign module and did the voltage measurement which gave 1v. That's none of the readings in the link (being 1.25v, 0.77v or 0v). But I took it as a sign that the module may have life. Then buoyed by my success I thought I would apply a voltage to the input, using an LED as my pretend coil. This is noting from above that 1.64v or similar might be the coil turn on voltage. I used a 1.5v battery. Imagine my surprise when the module turned on the LED pretend coil. I said oh my! So the 1.5v might be above the switch-on voltage, but the 1,5v plus the 1v bias voltage definitely is. So I think the ignition module might be working. In a fit of pique, I then connected up the dizzy in place of the 1.5v battery, turned it with my drill and nothing happened The signs point to the reluctor gubbins in the dizzie. As it happens, a friend is chucking out the same setup from his formula Atlantic race car (in favour of lumenition). So I should be able to get his cast off reluctor gubbins and AB14 module. We know his works, just not very well at high revs. The temptation just to buy a Lumenition is quite big, but I want to get the Lucas setup working as a matter of challenge! i'm certainly learning a lot!