I dunno, I find it much easier to make a diagram than attempt to explain how something works. Guess it comes from being IT and attempting to explain stuff to people that shouldn't be using computers, hah. Screenshots, screenshots and arrows everywhere!
But seriously, I can usually troubleshoot PCBs down to component level when using wiring diagrams, but attempting to make a wiring diagram to understand what's going on in this thread just gave me a headache.