I have a 12v run that wraps around 3 sides of my garage. I forget how many but I don’t think that matters. I have it running off of 2 power supplies. One on each end of the run. I know I don’t have to use two but I was new to the hobby. The first PS was already powering a bunch of lights and I didn’t want to run any long PI lines. The last 2/3 of the run is powered from the rear and the middle of that rear section(so about 1/3 the way from the back of the run). I kept having problems in the middle section that was only powered from the rear. I only had pixels go bad in that section. And I created problems for troubleshooting when pixels would burnout because it wouldn’t pass the voltage down the line so I would have to hook to the front section and unplug the rear power supply to figure out where the bad pixel was. I noticed this section had multiple pixels burn out over the years. The last time I had one burn out and I hook it up with the front section everything worked fine. When I took it back apart and hooked up the rear power supply again the pixels stopped working again. Hooked up to the front power supply and they all worked again. I have adjusted my PI since then and made everything PI’d from the front. I was wondering, does PI’ing from the rear cause problems for the pixels or cause them to burn out prematurely?