As the title states. I have a few 12v power supplys for the house and its a chore to keep up with what power supply is feeding what string so I can power inject to the ends or centers of strings to keep things uniform and bright. I think it would be worlds easier if I had a power supply setup that I can pull from any power supply to feed power into any string regardless of where the power originally came from. Any ideas which ones are capable of such a thing? It wont be a this year thing, I will not modify something that currently works but next season it would be cleaner.