Here is a diagram from TCI I believe:



Here is a diagram and a picture (several pics collaged together)of what found when I dropped my trans pan:






Normally, I believe that PIN A is 12 volts, and PIN D is ground.

Is this still the case in my situation, based on the diagram of my wiring? what should be hooked to what?

Page 2 of this pdf talks about the 'click test' to test the solenoid:
http://www.racetransmissions.com/mainpages/tech_info/700R4_lockup/700r4_lockup.pdf

as does post #4 on this thread:
http://www.hotrodders.com/forum/700r4-lockup-confusion-140555.html

If I attach 12 volts to pin A, I don't get a click. If I connect 12 volts to pin D, I do get a click.

However, the fuse gets blown when flipping the switch when the car is driving. It doesn't matter if 12v is connected to Pin A or Pin D. Could the solenoid be bad?