Many years ago I started my drivetrain swap, and pulled the computer out of my 84' SS, and also at the same time pulled the aftermarket stereo out to install a more modern one. The drivetrain swap was finished two weeks ago, and when I got it back I noticed that the horn, and courtesy lights didn't work, and thinking that this was because I pulled the radio fuse and didn't think much of it. But this weekend I was working on the stereo, and got it wired, but went to fire it up, no power (I put a good fuse in). I plan to go over schematics when I get home, but I'm posting this to see if anyone might have had this happen to them and can tell me a good place to start.