Hi All first attempt at power injection and really worried I am going to burn the house down (well husband is anyway). Have read and watched a lot of videos and forums about this and think I am on the right track but would like to be sure please. The way I have my display it is easier and tidier to have a separate power supply mounted next to my Advatek box undercover and out of the elements. It will plug straight back into a power point using a lead with power point plug at the end from an old computer cord I had. Now the only thing I am worried about (you might find more problems) is how does the ground power get out and also what size fuse should I be running. I was going to inject in the middle but it will sit neater and more flush from the end. I have soldered the string of 158 already and cut the v+ wire at node 79. The hat has a matrix I am going to run on a separate output and will need to inject that as well as it is 168 pixels so will use the same set up into the same power supply if I am on the right track. I have a 6 space fuse block. I wont use the boscoyo template in xlights as I am separating it and will run the outline of 158 as a circle image for sequencing and the matrix section as a stand alone matrix panel. Hope you can help thankyou.