That is a good use, Igowerf . . . and here is yet another!
I have been doing this for about two years . . . I connect the #2HDD LED to my SCSI adapter. It has a pair of pins just for that. So, I see one LED when IDE is working and the other when SCSI is working.
I think I'll rig up a 3rd one to have the NIC LED extended to the front . . . like who sees the back end of a computer! 🙂
Thanks for the idea.