Finding switched 12 volt source

Del;
if you put all the ballast wires together;
do you not create a live circuit back to the start solenoid?

When I did that, I ran into issues with the engine wanting to crank occasionally.
So I wired that brown circuit on a relay to isolate it.
That worked so well I also wired the other side thru a relay, and so my big fat,square-top Supercoil now gets battery voltage thru it's own ballast resistor. That coil really lives up to it's name.