JWWRadio
New Member

So what's up with MC4 connectors? I read somewhere that the little red o-ring had some significance (polarity). I bought some "Y" splitters and I am trying to figure out how to properly wire two panels, together.
If you look at this diagram from a product on Amazon, the two positive leads from the PV end up tying into a black wire, (can I assume it goes to PV- on the SCC, and the two negative leads from the PV end up tying into a red wire (positive to SCC)? Does this look correct? My guess is that there is a mistake in this diagram, maybe lost in the translation..... lol.
Or do I need to totally ignore the Gender, red o-ring and wire insulation color altogether as long as I know Neg to Neg and Pos to Pos? I am just about to forego this solar project.
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