Large-scale Duster electrical issue

Thank you all so much for your help, got the issue sorted out! Although it turns out I was just a little confused and overcomplicated the whole deal. It was just a bad flasher! (And some corroded connections as well) Also, the picture I have of what I thought where the flasher went was actually wires for the ammeter. ‍*Facepalm* That explains why the flasher I put there to test was constantly ticking with the key in run position. Oh well, gotta learn somehow right?