I checked across the points according to this post:
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See diagram half way down page. When points are open I get approximately 0.03 volts on the meter. When points are closed (connected) I get 12.5 volts.
I've checked the connection to the coils, all good there, 12.5 volts, which I assume is correct given that I've always had a closed point when testing.
I checked the volts at the end of the HT leads, although I think I need to retry while rotating through the points.
I had thought the kill switch may need a clean, but that's disconnected.
Thanks for the help so far. I'm sure you can tell I'm new to electrical. I just need to follow logical pattern through the circuit with tips from you fellas! Cheers.