Still stuck with my subwoofer install. I'm installing an under seat powered subwoofer and have so far got the subwoofer powered, grounded, etc. Just need to figure out which wires to splice. I've read everything there is to read here on this forum but sorry guys I'm still confused. To anyone who's successfully done this, or a speaker, or head unit install even... which wires am I looking for? Someone mentioned yellow and purple wires - see them under the glovebox. But there's an extra yellow wire? Does anyone have a definitive answer for how to do this? Which wires am I looking for?