I confess, I've had these things for two years now and I still haven't figured out how to use them. I try each year in the fall for a day, and get mad that I can't figure them out and throw them back in the drawer again. I'm asking for help this year after looking around here, and a few other popular forum sites. I've been able to find/obtain the wiring diagram/layout and seen some comments on them, but not much information other than that out there. My understanding was that I could place the ECG-PPD-C next to the controller maybe, run a cat5 or 6 line to the ECG-PPR-A and not be so limited to the 10-15ft that I'm currently limited to before I have to use a null pixel. I've been using WS2811 12v Pixels lately and have some luminaries further out in my yard that I would like to run a Cat6 line to underground so wires aren't showing, but before I bother, I need to figure out how to get these pixel extenders to work. I've put a multimeter on the receiving end (ECG-PPR-A) of this when test hooking it up, I see ground and 12volts come across, but I can't seem to figure out which port the data is supposed to come through. I see a lot of comments out there about being able to put a little 5v power on the receivers out there, but nothing on 12v. Its completely ok if I need to make sure I have a power source out there at the receiving end, as I plan on needing one as I add displays in the future, just need to know how to properly use these and information seems to be scarce. Anyone out there familiar with these? More information would be greatly appreciated! Thank You.