Need help with ignition wiring problem

[minendrews68]

I am putting the radio in my '68 Camaro, and I've run into a problem. On the back of my ignition switch where the wires go into the plastic housing there are 4 useable wires I have put a aftermarket wiring harness in the Camaro. I have added a picture of the back of the switch to show what I've got going. I have the orange wire coming from the "Acc" terminal which is suppose to be correct, but when I put the switch in the "Acc" position and turn the radio on nothing happens. I also hooked up a 12 volt light to see if that was the problem, but there is no power coming to the switch. Does anyone have a wiring diagram of the switch? Is the orange wire (Acc) suppose to be hot all the time at the switch, or does the "bat" on the switch make the acc hot? I'm lost.