Alpine only makes one CD changer now, the CHA-S634. Cost is $299 at Crutchfield (free shipping). Add in $40 for the adapter (plus shipping):

http://www.discountcarstereo.com/detail.aspx?ID=304

but the CD changer is ai-net, you need m-bus, so you need an ai-net to m-bus adapter:

http://www.logjamelectronics.com/alpinekca130b.html

$15 plus shipping.

So you are looking in the neighborhood of $370 for the setup. This was basically what I did in late ’98 on my ’99 Honda Accord – picked up an Alpine CD changer and two adapters and installed it, controlling it through my OEM head unit. Still works great.

But look at the alternative… for $200 you could get the Alpine CDA-9883, a nice Alpine head unit that plays .mp3s, .wmas, and .aacs. Includes the kit, harness, and shipping. You’ll probably want to pick up at least a couple new speakers while you are at it.

Link to CDA 9883 at Crutchfield

CD changers are a relic of the ‘90s and early ‘00s – digital music is where it’s at now. Keep a few CDs in your car loaded with .mp3s and you now have twenty four to thirty albums worth of music at your diposal. Pop in a CD-R loaded with .mp3s and put it on shuffle, you are now shuffling between roughly 125 to 150 songs. For $30 you can add an iPod adapter, another source of music.

I still use my CD changer in my Honda since I already have it, but if I were to do it today of course I’d go with a new head unit. In my Volvo (’93 945T) I have an Alpine head unit from 2000, a nice unit but doesn’t play .mp3s.