Trunk ACC outlet, '05 Malibu LS Sedan

[MalibuBob]

Chiltons doesn't yet make a manual for the '05 Malibu, and I'm afraid to find out what the dealer wants for a shop manual, so maybe someone here will have an answer for me.
I have an '05 Malibu LS sedan. A accessory outlet in the trunk was available on the LT model, but not the LS. There is a fuse box in the trunk, and mine has a fuse in it for an accessory outlet, but there is no outlet. Since it is apparently wired for an outlet, I'd like to install one on my own, but I have no idea which of the bundle of wires coming out of the fuse box is for the outlet. I know I can go back there with a 12v tester and do it by process of elimination, but would rather not be punching holes in all those wires.
Does anyone know what wire is for the accessory outlet?
Better yet, does anyone have a copy of the chassis electrical diagram for this car that they'd be willing to share with me?
Thanks in advance!