Here's the troubleshooting chart right out of the light duty truck service manual for '87. I found '86 first, and it was the exact same thing. I'm puzzled on what the "neutral sense switch" does on a column with mechanical lockout, which I did confirm that some got that and some didn't, as previously postulated, but here's something. Someone mentioned earlier that it was time to get friendly with the multimeter. I want to reiterate that thought. I'm curious. When you turn the key to the RUN position, what happens? No, orange SES light or red BELTS light if the chime/buzzer module is still down there and working (most of those modules are long dead or thrown in the trash)? No fuel pump cycle? You had this exact problem, replaced the ignition switch, and still had the same exact problem? If replacing the switch had caused it, I'd suggest looking back at the actuator rod, but it doesn't sound like that's what happened. Jerry's gonna know more about this ignition stuff than me, but I hope this gives you some homework, and you find the issue. I would really pay close attention to that bulkhead connector. That's where I'd start.