I know there is a serach feature but I figured I would be able to get the answers I needed here. I hope someone can help
1.) With the Avic-D3 in terms of Navigation, Do you have to keep the Nav disc in the drive at all times to use Navigation or are the disc(s) copied to memory of the Unit? Is there any reason you would need to keep the nav disc in?
You can take the disk out. You only need it while navigating. The unit will copy your route and a bit of the surrounding area, but if you stray too far from your route you'll need to put the disk back in.
2.) Besides the famous Bypass, I have seen hardware pieces that can be used to bypass the Avic-D3, has anybody used one of these?
Don't buy 'em. The bypass is so easy that if you have the (minimal) technical skills to install one of these hardware bypasses, you've definitely got the skills necessary to do the bypass without extra components.
3.) Video ipod, can you watch videos on the Avic-D3 unit from the iPod? Can you see album art work when you play music from the iPod?
I appreciate the help
No album artwork. Video does not work with the very newest iPods. With the 5g iPods (the generation right behind this one) you can watch videos, but I personally have never bothered with it. From accidentally hitting the "video" button, though, I think you need to do it from the iPod itself. Video's a waste of time in a moving car anyway, unless it's for the benefit of a passenger.