I am not sure if any A15 came with electronic distributors but I suppose the Injected A15 did but this would be pretty hard to come across!

You can make an ET Pulsar electric dissy fit with a few modifications!
You need to take the gear off the bottom of your A15 points dissy and fit it to the Pulsar dissy. But make sure you fit the gear so it will make the dissy the same length as the original A15 points dissy!
Then the only other modification that is required is to take the points dissy locating bracket and fit it to the electronic dissy and then you have to weld a little bracket to this locater so the dissy will fit in the correct spot!

( It's been a while since I done mine but I am sure the dissy comes off the ET Pulsar and the same model standard Pulsar! But I am not 100% sure, but I do remember I got 2 electronic distributors and I ended up selling one to a customer for his ET which he crashed and busted his dissy!)

Jeff Taylor at JTS in Sydney also modifies an electronic dissy to fit the A series.
He said he gets them from a japanese nissan engine, but they look exactly the same as mine.
Maybe you could contact him!