12Ounce -
I really don't follow your logic. Setting in my garage the PCM no longer communicates with my scanner. Are you saying the alternator burned a power-train cable and my PCM is fine? I don't think so. I will check the circuits from C103/PCM to C216/DLC and DLC pin 16 for power but I'll bet they are fine.
Upon disassembly, the PCM has a faint burnt resistor smell. PCMs are available for $40.00 on up. I think the much bigger issue here is PATS. If I install another PCM a Ford certified locksmith must come to my house and re-program my transponder keys.
Summary of choices:
1) Pulled PCM from a nearby yard $50.00 plus $105.00 locksmith.
2) Tested, updated, and guaranteed PCM $125.00 plus $105.00 locksmith.
3) Send PCM in for repair. Cost $35 -$125
I'm going to try choice 3. I'll let you know how it goes.