Need specs on what we are looking at. Year and model type of specs. Some wires you find are not connected at all, some are for radio harness, some are for dash switches you may not even have, options ๐. Most important wires are the 7 connected to bottom of steering column. Other important ones go to headlight switch. Haynes manual gives you a basic wiring sycmatics to get you started. FSM can be downloaded from the do it yourself section in a sticky link on top,
So look for that.
I have found it a pita when it comes to the wiring, over several years and many tinkering nights I have been just cutting the wires out as I have found I don't need them. Not recommended for most, I'm just simple and my truck just works when it wants too. Like me.