hey scotty my 85 s10 with a 2.2 diesel is having this and issue where the battery is charged and fine and even the headlights but when i turn the key nothing happens not on the dash or anything. I don't have one of those cool testers like you have so any suggestions of what to do? Do you think it's the ignition switch? I watched your video on this and i was just asking to get your opinion i also checked the fuses and they look fine

often a switch, but get a cheap test light at auto zone for 6 bucks and test the power lines going into the switch for shorts, and if there are none, turn the switch and see if it sends power further