Ignition went dark?

^ this is where you should start - - if the battery is bad - not holding a charge - get a new one. Chasing a power issue with a bad battery in the car is a monumental waste of time.
This....O.'Reilly's,& Autozone ,will charge your battery ,for free..(might take a while,if it's sitting a while,& sulphated) Let's start with a 12.2 -12.6 voltage battery...... The slower the charge,on the old battery,(heat destroys batteries..) the better....