67Dart273 said

This doesn't explain it?

View attachment 1715544759

There are two IGN feeds coming into the engine bay. One is the brown bypass circuit IGN2 and it's only hot for starting

The other is IGN1, normally blue AND IS THE ONLY source of switched ignition power coming into the engine bay

The wire from ignition switch going to the top of the ballast is indeed IGN1

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