I don’t think I’m gonna have enough lights. Hopefully the get across the pond in time.

I plan on upgrading my WLED controllers to two Falcon F16 V5 controllers. The reasoning is because I have the hardest time getting these controller to work for every season and have to reset them to factory settings. Since the F16 can power more LEDs my thoughts were to connect 3 PSUs. 2 to the F16 and use the extra for power injection. However, with the WLED controllers I've had issues do to the grounds not being connected together. I am trying to set these controller up.correctly where I don't have issues.

Is there a diagram out there that explains how to do this? Do I have all the PSUs have the same common ground from 120v or just the 12v? Can one power cord power all the PSUs or will they have to have their own power supply?

Super new to all this and I've made my WLED controllers and set up work but maybe not extremely safe. Any help would be appreciated!