Got access to a multimeter? Verify all those wires with red heat shrink on the ends are connected. If they are just get a bolt and nut and bolt them all together and wrap liberally with black tape.
Then this weekend take @blairandgretchen advice.
Edit: Of course I never claimed to be a mechanic, but I am fairly good with electrical so...
If I randomly seen that I would think nothing of it being a connection block, but vehicles do their own things.