Burnt Wire

ok, so there is something grounding in the column somewhere. i did the test and neither wire lit up the test light.
At the moment I can't think of how it can be
completeing a circuit to ground in Start when the battery is connected to the start switch,
but not completing a circuit to ground when the battery is connected to either the S2 or J3

After i reconnected the ballast and the starter ground wire, j3 lit up the test light. s2 is still dead though.
J3 to ballast I understand
Starter ground wire I don't understand.