Voltage problems, cutting out when hot

Your descriptions are confusing me. Last photo............You are measuring the yellow wire at the starter RELAY? And this is with the key OFF?

Beginning to look like a bad igntiion switch to me
So after going back through everything, voltage stays consistent everywhere I check until I get to the ignition switch plug, is there a way to check the ignition switch? I think I’m going to just replace the switch wiring in the column as everything keeps pointing to it as a possible problem and the plug itself is split in half from me pulling it apart multiple times to test.