Ignition Switch Crazy Wiring

Thanks so much all great responses and ideas on where to look for my problem, I do know that the last time I was doing stuff under the dash a few years ago, there are a few areas too look at starting with the fuse block which is somewhat degrigated. there is an after market under dash A/C unith that has been added. previous owner got the dash restored, but soon after I got the car fuel and tempature gauges stopped working. As much as I don't want to do it i may have to look at replacing the under dash wiring harness as the one in there is original and in poor shape in many places. I may be back with more questions but this will sit till winter when I can slowly work on it in my heated garage. I appreciate the great feedback!