[projectRDM]

I disagree a bit. For speaker wiring, bigger isn't always better. Larger gauge wire is typically more stranded, though it can handle more current there's also more resistance across it. For a +12V signal like the power or ground leads that's not a big deal, but a fluctuating low voltage signal like the speaker output needs as little resistance as possible. The signal will suffer through using larger gauge wire unless it's solid core or light stranded. The OE wiring, being just that, is more than enough and is already prerun for you. Why not use it? Unless you're going to be putting several hundred watts to each speaker you will never see the benefits of going bigger.