Can someone help? I need to drive my dart tomorrow

We still have a mystery brown wire or two. One of which is hanging loose, and there was/is a hot from the battery that ran inside that's also hanging loose. One of them may have broken out of a connector and could be why the hack stopped working. (I'm using the word hack for convenience instead of modification. )

Give me a little time to correct the diagram. It starting to make sense now.