[MarkL]

on a side note my old John Deere tractor with points will run OK I think.

There's a good chance that the secondary side of your ignition coil would be melted down.

Mark

[Clinging Bitterly]

There's a good chance that the secondary side of your ignition coil would be melted down.

I don't think that would be so likely. The devices thought most vulnerable to EMP would be semiconductor junctions. And actually, if I were a semiconductor device and knew an EMP were coming, I couldn't be much more safe than if I were connected right in the middle of that coil winding, .