I just installed a JL 500.1 amp and W6 sub over the weekend. I removed one of the subs and they look to be dual voice coil subs. Anyway, there is an 8-wire connector under the trim piece on the right side by the sub box. You need to remove the carpeted piece and then there is a plastice piece that removes with a 10mm socket. I have the cargo floor, so it may be slightly different. I completely disconnected it and used the top 4 connections for the low-level convertor. If I remember correctly, the brown wires were negative. I'm planning on cleaning up the wiring tonight, I'll take some pictures.