Hello! I am installing 12 panels with a 3s4p configuration. Im skipping the combiner box and using inline fuses with y connectors. I noticed the y connectors have two + symbols at the top of y where they combine. At the bottom is one - symbol. Can anyone explain what this means please? Also, can a Y connector attach to another Y connector? I was drawing up the schematic and it looked like a good idea but upon looking at the parts it does not look possible to do. It has to attach to an mc4 connector run some wire than another mc4 connector, than another y connector. Thats what it looks like. Can anyone confirm that to be true? When I use a y connector to connect two + strings in parallel it will still be a + connection at the bottom despite the - symbol, right? And vice versa. Im assuming yes but there arent directions that come with the product. Id rather be safe than sorry and get a confirmation on that. Thanks!