Bronco, looking at your harness picture, I just noticed that with my car whoever put in the SWC had installed it into the wires coming from the car, not alongside the harness as you have done. I'm rewiring the harness so I will be putting the SWC in exactly as you have it.

Also, a question: I noticed you don't have the brown/white or brown wires with the 1/8" audio plugged hooked into your harness - does the 1/8" plug from the SWC hook directly into your radio?