I used 2 of these plugs: https://a.co/d/0906AWRx They are 5 volt, 3 Amp capable wall adapters and are UL Certified. I don't think I changed the wiring of the lights themselves at all, but I can check this evening and try to compare. I just didn't use the 2-to-1 USB merge component they give you and instead routed them directly to wall power using the linked plugs. Each half of the light kit draws about 3A at 5V, so it worked well with these plugs. With the 5V and 1 or 2 Amp plugs that are more typical for phone chargers, the lights draw more current than the plugs are rated for and they overheat.
