The "flasher LED", (by the 8 pin), location is the same as the Tamiya TBU flasher. It works in conjunction with your apple, (non Tamiya), (signals: received hits, reload, programming changes, etc.). The "barrel flash" location will be for your LED barrel flasher. However, if you're using a Taigen or HL flasher, it would be plugged into the "xenon flasher" location on the board.
Hope you get it worked out. I'm happy to help with what I can.