I'll be doing my deck, amp, and speakers this weekend, and am trying to get everything together before hand...

Where does the wiring for the rear speakers run from the head unit? I plan on replacing the stock wiring, unless it's too much of a pain in the arse!

1 more thing... what's the best way to integrate a 4 channel amp in the mix?
In my last car, I used front and rear RCA's from the deck to the amp, and wired from the amp to the speakers.

Thanks

If I weren't going fishing I'd offer to help. :) If you put it off until Sunday I'll be back in town.

Stock wires... from the deck they go around the ECU and back along the passenger's side door sill. Let it sit there. It's not hurting much, but do run new stuff.
I did a deck, 4ch amp under passenger's seat, 2 channel amp (bridged) with 1f cap & cd changer in the trunk, and all new wires to all 7 speakers. (sub, tweets on dash, and 6.5's all around). I ran the stock wires for the fronts for a while, but I felt like they were choking so I ran thicker stuff.