[sickem]

You are correct that the dark wire goes in 23. As for wires 19 and 20, you could contact Terry directly if you haven't already? (Not that this helps you now, but I put a piece of painter's tape on the wire 19 so I'd know which one it was when I returned to stock.)

The only other thing you can do is take a 50/50 shot LOL. Put it back one way and see what happens. If you got it backwards, then maybe the car will throw a code or otherwise indicate that it's wrong. Then just switch 'em. GL