Awesome stuff! I had a very similar experience with my scorcher electronic ignition back in the day. It was a voltage supply issue though not a dud module. The 12v stuff can be very delicate, doesn't take much to fry something - did you do any welding with the module in the car? 

Good point, but no I dont reckon the electric ignition was in when I did the final rear welding,and will take not to disconnect it in the future.
Let me check the build thread.
 
I cant remember what day it is at the moment, so I'm glad to see the forum is still up and running.
I'm going to read back through the posts to check if I replaced the rear main gearbox seal.
Old age sucks.