The AC wires are black / yellow and black / green stripe. I have the same harness in my car but it's tucked behind the fender. Not sure if that's the AC but the size looks right. Just not sure where it goes. It comes from the AC cut relay on passenger side by MAF and runs to over by the starter solenoid. I don't remember if it runs along the firewall in that harness or if it goes inside and comes back out.
There's also a black and yellow that runs to the rear defrost / convertible top motor. From location it's, more than likely, the wire for defrost. It should be connected to a 16 gauge ( black ) fusible link and attached to the battery side of the starter solenoid. That one looks burned so it may be a good idea not to hook it up. Either way, it goes to something you don't need to be able to run the car.