Searching for 12v switched power after ditching ballast and installing aftermarket electronic ignition

A starter relay might not be the best option.

It is designed for short bursts rather the continuous duty
Funny you mention that, because before I posted this thread I was doing some digging and it seems to not be recommended to use the starter relay in this way. I mean, if it could be used, that would be awesome and simplifies things, but if not, then where could I pull 12v ignition power from?