Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

MP3 hard disc player connection to CDR 22

Recommended Posts

I am trying to hard wire my MP3 disc player to my CDR22 and have purchased a connector for pins 13-20 and have connected pins 18 19 & 20 as suggested by the retailer. My CDR unit doesn't recognise the MP3 as an input. What am I doing wrong or is it not possible to conncet the unit.

My MP£ unit is an Iriver.

Your help would be appreciated


Link to comment
Share on other sites

  • Moderators

OK, I was under the assumption that the Becker radios with a 2 digit designator were MOST radios, but if not try this:

The radio has 3 sets of connectors A, B, & C. You want to mess with connector C which is the one on the top of the radio. This connector is further broken down into 3 sub connectors, C1, C2, & C3. That is why the connector is in 3 colors.

C1 is the inner-most connector and has pins 1-6. This is where the phone and the Amp switch sense lines are.

C2 is the middle one and has pins 7-12. This one is for the CD changer logic and control

The analog Becker radios starting with the CD-220 have the ability to accept either a CD changer or AUX input, but not both at the same time. To change from a CD changer input to Aux-in input, you have to remove the CD changer control lines, and enable the AUX-in on the radio. If you do not have a CD changer, you may still have to enable the AUX-in feature.

C3 is the connector on the radio you are concerned about. It is the outboard one and has pins 13-20. This is the one that has the analog audio input lines.

1. In your case, I am assuming that you have a CD changer. If not then skip to the next part. You must make the radio think that there is not a changer, so to do that, connector C2 must not be plugged in. To do this you must separate the 3 subconnectors. They more or less slide apart and have a plastic spring clip holding them together. You can see the release nub between the connectors.

2. Then you add your new audio in lines to pin 18 (GND), pin 19 (yellow L+), and pin 20 (red R+) to connector C3

3. Now you need to enable the Aux-in feature of the radio. To do that:

Push and hold the "TP" button on the radio faceplate for about 8 seconds until "Becker 1" is displayed. Turn the tuning knob until "AUX off" is displayed. push either button directly under the arrows on the display to change the state to "On". Turn the radio on and off, and now Aux-in for your Mp3 player is ready.

However if this radio has a connector for a fiber optic cable on it, then all bets are off because it is a MOST bus radio and only accepts digital audio inputs from the changer

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.