The setup is pretty simple, you have one adjustment. I'll be doing mine with a signal generator and a 'scope. However, failing that equipment, connect to a good TIU channel all set up to get,and then "tune" the pot to turn on both lights. You'll probably want a "tiny" bit more toward the lights on to compensate for small variations in the outputs, but not enough to let a bad TIU pass as good.
I was hoping to hear from Adrian and Stan on the "final" version to see if we've missed anything before I go to press on a bunch of PCB's. 
