Figured I would revive this thread rather than start another on the same subject...I am currently in the process of upgrading the audio in my 14' SE (non-sony).
This thread was def. helpfull re: the grommet behind the battery to run the 4 AWG wiring into the cab etc..I am using a JBL MS-8 processor mainly for it's ability to integrate with OEM and allow me to run a fully active system, so with that in mind I wanted all new 4 conductor speaker wire into the front doors (pair for the tweeter, pair for the midbass) Well...what a PIA that proved to be!! so thought I'd share in case anyone is thinking of doing the same...
It proved to be impossible to fish through the door molex connector (unless someone has some other magic solution) If I wanted new wiring...I had no other choice but to unbolt and remove the doors to gain open access to the molex passthrough. I then used a dremel tool with a metal sanding bit and made a :"notch" beside the opening, this allowed enough room to pull the speaker wire through. I was then able to make a small slice in the rubber boot and route the new speaker wire through the rubber "sleeve" and into the door. If you get into this...remember to file the metal smooth and free of burrs, use a little touch up paint on the raw metal to prevent any possible rusting issues and I then applied white silicone to both prevent wire chaffing as well as seal up any minor openings. It was a chore but it worked...and the wiring is not visible so now I can move onto the fun stuff!!
I wish auto manufactures would engineer some small provisions to allow a way to make it easier to upgrade the audio...