Bypassing ballast resistor

Okay, I just tried to find out what wires to use, but cannot isolate a single one. On the left side of the ballast is the blue wire and green wire above it and the loop connecting them, but if the loop is cut, neither will make reading on the circuit tester with the brown wire. If I leave the black loop connecting them, both the blue and green will make a connection with the brown wire in run and start. So what should I splice together?