Since the Center console is already mainly apart go ahaead an pull of the back cover. 6 plastic clips and 2 screws hidden underneath.
Push up a bit on the plastic panels to remove the two pastic panels from the armrest assembly. (they basically fall off themselves)
Note: 2 screws are on the bottom of the armrest assembly, not marked on pic.
Using a flathead screwdriver(or butter knife

) pry the clips loose on both sides to disassemble the armrest assembly.
Plug you Ipod car charger to the plug inside the armrest. Leave a bit of slack and assemble back the armrest.
Reattach the armrest assembly to the plastic panels, then reattach the cupholder assembly to the plastic panels then run your charger wire to the back of the Ipod dock.
Follow the steps on the First thread to finish up the install.
Cool thing about the car chrger and the Si is that once the power is turned off in the car the charger is also turned off. Gives it a bit of a safety feature in case you leave the ipod plugged up to the dock. No drainned battery!
My car charger has a blue LED(wish it was red) so it lights up my stuff that I have in the console.