Resolved! I failed to tell you I installed a new starter. Retraced the wiring and realized I failed to put the wire that supplies the power to everything else with the hot wire from the battery. Ugh.
Sorry all! 💩
New battery, no horn , no flashers, not anything. Jumpered starter will turn over. Tested ignition switch with ohm meter. That appears fine. Checked all fuses.
Is there a main fuse that would kill EVERYTHING?