RUMORED BUZZ ON SOLAR POWER HARNESS SUPPLIER

With Daisy Chain you receive a regular wiring, though Leap Frog saves income on wire and decreases power losses made by heat, staying by far the most effective wiring technique. that is a dumb issue but I’m not solar panel savvy. What do the rubber plugs at the end of solar panels do? Are they necessary? I have 3 which might be missing and I w