I recently wrote about how I hooked up my iPOD in my Mini Cooper, hard wiring it into the head unit and create a very clean, single cable set up in the dashboard cup holder. I use that every day to and from work.
However, I've also found an easy and very inexpensive way to hook up an iPOD into a 2004 Nissan Quest, our family vehicle (choose the Automotive categy in the left column to see all related posts).
The Quest has several ways of hooking up a digital music player. You could use all of these methods to alternatively hook up an old casette walkman which can be helpful on trips if you have books on tape. The Quest has no built-in cassette player (the Quest is an all digital vehicle!).
Getting back to the iPOD, you have a few options:
Add on an FM transmitter like from Griffin; downside is that you might get some static and fuzz depending on your geography and the signal will be compressed (less dynamic range).
Hard wire it into the dash in place of the optional satellitte radio input.
Run it through the aux audio input of the DVD player
In all of these options you will still navigate the iPOD using the iPOD itself. There are some kits out there from folks like Denison that allow you to use your car stereo's control buttons to control the iPOD with some cars (not the Nissans), but frankly I think that feature is a bit overrated. There is no way to use your car controls to navigate playlists, browse for albums or songs, etc. (which you should never do when driving anyway), so all your left with is volume and play/pause, forward/back. The volume control on your stereo will always control iPOD volume in all of these install options anyway, and the play/pause fwd/back are easy buttons on the iPOD as well. Yes it would be nice to use the steering wheel controls for play/pause etc. but I'm not sure it would be worth the extra $$$.
I decided to route the iPOD through the aux audio input of the DVD player. It's cheap, clean and sounds great. All you need for a basic installation is a headphone to RCA cable - about $4 at Radio Shack!
If you want to upgrade the sound and add power, go for the Belkin iPOD auto adpater - $40 or so.
The aux audio jacks on the DVD player are right on the front (see photo). However, I must warn you that you need to get "L" adapters at Radio Shack as well to keep the plugs from sticking out between the front seats. If they are sticking out then inevitably someone is going to step on one and that will damage the input plugs! Happened to me.
I keep the iPOD in either the second cup holder in the Quest driver seat or put the whole thing in the center console cabinet, whidch conveniently has a power plug in it as well! You can set the iPOD to shuffle through 700 kids songs, put it in the cabinet and just hit the road. If I think I'll want access to it then I'll just leave it in the cup holder. In any case you only have one cable coming off the iPOD.
You will need to switch into the AUX mode of the DVD player, which means holding down the REAR A/V button to switch to DVD sourtce, and the hit the MODE button on the DVD player (hard to see from the driver seat). It will stay in that mode even after you power off the vehicle so you only need to do that once until you want to play audio from another source (radio or CD) or play a movie.
For this reason it would be nice to hard wire it right into the satellite radio option, but that's the only benefit I see of doing that.
Check out the photo album of the install here