Last week I picked up a non running 90 GTS for $900. It took a lot of diagnosing trying to figure out why it wasn't getting spark, and then not getting any fuel. It was annoying. But I didn't even have to put any money into it, and got it running now. Runs great! Check it out.
And here is the problem and why it didn't start. It had a broken wire in the fuse box under the hood, going to the fuel pump relay!
So I of course fixed that problem with a new wire and some sauder. Now the car runs great. So if you ever have a weird wiring problem you can't figure out, look in the fuse box.

And here's a picture of my other 90 Corolla GTS in just as good condition running perfect.