So, it looks like whoever tried to put a radio in my car last was a real tool, considering the mess that was made out of all these wires. Anyone know which colors are supposed to be connected and which are not? I'd rather just fix it myself if possible rather than go buy a new adapter (yeah I know, it's cheap, but hey, maybe I need a hobby.) Thanks in advance!

 

Diagram attached. This is for a 1992 accord, but should be the same.