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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 12-13-2006, 01:11 PM   #1
GTRaptor
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DIY CD or AUX interface cable for iPod or MP3 players

Guys i wrote a small article on how you can create a CD or AUX adapter cable for the business unit. Users with radios manufactured after sept 2002 can use the AUX option.

Users with versions prior to that date must use the CD adapter cable, but should also have a CD changer in the trunk.

Here is the attachment in PDF form.
Attached Files
File Type: pdf bcdipod.pdf (330.0 KB, 17635 views)
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Old 12-13-2006, 03:55 PM   #2
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Just noticed theres already an AUX cable article, but this one will also work for radios that dont have the AUX option prior to sept 2002.
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Old 12-27-2007, 11:30 AM   #3
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Can you tell me where you bought the IDE cable?
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Old 05-25-2008, 12:55 AM   #4
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CRAP! i was sooooo excited to see someone used their head and figured this out so i didnt have to until i realized you need cd's in the changer to get the radio to recognize the changer option. My changer is broken! Guess i will have to pay the man and buy an aux interface.

Thanks for the diy its the best one ive seen on this topic.
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Old 05-28-2008, 05:23 PM   #5
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ihave 03/02 business cd.. does this work ?
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Old 05-28-2008, 08:22 PM   #6
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It works if you have a working CD-changer in the trunk.
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Old 06-25-2008, 10:30 AM   #7
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yea something is wrong with mine but when i press the cd changer button nothing happens / this probably wont work

good diy though
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Old 06-25-2008, 11:22 AM   #8
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Yes, you need a working CD-changer to send information to the head unit to fool it into thinking that's where the audio is coming from.
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Old 06-29-2008, 10:49 AM   #9
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thansk man. i will try to do this next weekend
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Old 06-29-2008, 02:18 PM   #10
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where do you get these parts??
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Old 06-29-2008, 05:37 PM   #11
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From any electronics store, but I already had everything in my closet. All you need is a FDD cable and an audio cable with a 3.5mm headphone jack in one end.
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Old 06-29-2008, 10:07 PM   #12
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Just did mine today... too simple. Great tip, thanks!!

BTW, instead of an IDE connector, I cut two wires running from the power switch on an old computer. Two little prongs on one end (like jumpers on a HDD). The wires were nice and large to work with and the connectors fit absolutely PERFECT into the 10 pin connector.

Also went the extra mile and ran the wire thru the A pillar and into the sunvisor, where my ipod now resides out of sight.
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Last edited by Bailey228; 06-29-2008 at 10:11 PM.
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Old 07-01-2008, 08:59 AM   #13
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I too was excited about this process until I realized I'm only "wired" for a cd changer in the trunk. I guess I'll have to go the DICE route.
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Old 07-01-2008, 09:13 AM   #14
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You don't have the CD changer output on your HU?
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Old 08-12-2008, 01:41 PM   #15
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Quote:
Originally Posted by Bailey228 View Post
You don't have the CD changer output on your HU?
Wait I'm confused. Do I need a CD changer installed? My car doesn't have the CD changer in the trunk but is "pre-wired" for one. Does this mean I can't do the auxilary mod?
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Old 08-12-2008, 04:45 PM   #16
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NM, found my answer here "http://forum.e46fanatics.com/showpost.php?p=8186112&postcount=8"
Quote:
Originally Posted by rorschach View Post
Misinformation in one of the older posts in this thread, I'm sorry. You do need a CD-changer. If you don't have it, this cable won't work.
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Old 08-22-2008, 07:07 PM   #17
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gotta ask why the resistors and capacitors? What exactly does this do?
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Old 08-22-2008, 07:07 PM   #18
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BTW if people are looking for the actual cable PN it should be called an IDC10 cable
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Old 08-28-2008, 05:28 PM   #19
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Quote:
Originally Posted by GTRaptor View Post
Guys i wrote a small article on how you can create a CD or AUX adapter cable for the business unit. Users with radios manufactured after sept 2002 can use the AUX option.

Users with versions prior to that date must use the CD adapter cable, but should also have a CD changer in the trunk.

Here is the attachment in PDF form.
Can you tell me what the resistors do? I found the capacitors but i'm having a little difficult time with the resistors of that value. are they necessary?
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Old 10-14-2008, 03:31 PM   #20
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Great DIY. I made it during the summer holidays. But for me the audio quality is not so good, I cannot here very well the low frequency during the playing.
For me the capacitor size bass frequencies (like it usually does with the separete speakers).
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