I run LED's out of the PGD & PGD pinson 18F24K22s regularly with no ICSP=20 issues. I use 270-ohm resistors to the anode of the LEDs. I don't know=20 about using a debugger with this, but I suspect you would be using a=20 much higher valued resistor for your heartbeat LED... probably 1K or so. Cheers, -Neil. On 2/20/2015 8:57 PM, Josh Koffman wrote: > On Fri, Feb 20, 2015 at 7:19 PM, Neil wrote: >> I can confirm for this specific device (18F25K22), that MCLR is an input >> only. > Sadly, this is true. And I was just looking for a a place to stick my > heartbeat LED! > > Time to switch some things around... > > Thanks for the tips everyone! > > Josh --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .