All, I'm hoping to find a simpler solution to what I thought would be a simple task of driving a single green/red bicolor LED from a PIC. Reversing polarity isn't easy! I have found an old article that uses a relay or suggests a better solution of using a couple of transistors and resistors. Sorry for such a basic question. I searched the archives and only found a matrix solution. Thank you! - Chris -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.