I'm running zero guage power and grounds. Not sure how big zero guage is? Just take a look at your local neighborhood pierced freak. The really thick stuff that looks painful hanging from people's ears is zero guage. The higher the guage, the thinner the wire. I would say to use at least 8 guage grounds. I also created my own ground source by drilling, sanding away a bit of paint and attaching it there.
And you really should drop the factory head unit. It's very limiting. Go with an aftermarket HU that has an infa-red remote, that way you can use a PAC SWI-X to retain your steering wheel controls. There's more info about this on my website, page 2.
Here is a direct link for you.
Oh, and stay tuned...my install is getting redone this weekend. Frenching together the two pieces in the boot and recovering with dark grey (vs the black that is there now) carpet. The plexiglass viewing window is being replaced with a silvery, opaque viewing window with red pin lighting. Should be stellar when done.
R
