BMW Aux Input - Quidzel

BMW Aux Input

Add an Aux Input to your BMW! Connect a simple cable to your factory radio to listen to anything with a headphone jack. Quidzel’s aux input kit works great for BMWs approximately 1997-2005, especially pre-2003 radios. Quidzel prides itself in being an affordable option to get that aux input that you need in your BMW. No need to run cables from your trunk either!

Pre 2003 BMW Aux Input kit

The simplest way to get an aux input for your older stereo. (Includes Emulator and Cable)

Need a 3.5mm aux cable?

Aux Input for 2003+ e46 models

Only cable is needed for ‘aux capable’ head units (~9/2002+)


Free shipping in the USA! Questions? Email us at


Your satisfaction is guaranteed with a 1 year warrantee, and we offer no hassle returns within 30 days.

Quidzel’s aux input kit works great with
1999-2005 e46 3 series (no navigation)
1997-2003 e39 5 series (no navigation; no DSP before 2002)
1999-2006 e53 x5 (no navigation; no DSP before 2002)
Please check with us regarding compatibility for other models that use I-Bus like Mini Cooper, etc.

  • Plan on 1/2 hour install on an e46.
  • Aux In Kit

    • Aux Input Cable is 1m long, allowing for installation on lower dash or glovebox area.
    • Drill 1/4″ hole and install, leaving a clean finish, or leave exposed with no drilling required. Here’s mine installed in the sunglasses cubby under the climate controls.

      Plugging 3.5mm in

    • Terminated in a 3.5mm female panel mount jack and connects to the back of your stereo.

      Female 3.5mm

    • Install connector white line UP to back of head unit marked RED. For 2003+ e46 aux cable, install connector white line DOWN to back of head unit marked ORANGE.

      17 pin connector40 pin connector
      Connector to back of head unit

    • Small module interfaces with the Radio to select CD changer input. For those who just want the module, here’s a button for buying just the CD changer emulator – $39.99

      iBus Interface module

    • Our aux input replaces your CD changer, if so equipped. Make sure that your CD changer wiring color and order match exactly to the following image, with the module’s silver stripe lined up with the brown wire.

      3 pin connector with wire color/order

    • (Note: please view the install video above to understand the installation. If this appears complex, seek the help of a professional car audio installer near you, who should be able to install this easily.)
    • Our pre-2003 aux input solution also works great for post-2003 cars that have had trouble with the factory aux input disconnecting. Our aux input will not disconnect whether you use a bluetooth dongle, a charger (use a ground loop isolator to minimize noise)

    Quidzel backs up our audio integration products with great customer service and please contact us for any concerns.

    Module installation: We’ve designed the module to be very simple – as long as you find the right connector and plug it in the correct way, everything should *just* work. If it doesn’t, we want to help you out. If you are having issues with your aux input installation, here are some suggestions to try:

    CD Changer Emulator Module Installation:
    If you are unable to switch to the AUX from the stereo head unit, this indicates that the module is not communicating correctly with the stereo.

    Did you correctly locate the CD changer wiring, with a six pin and 3 pin connector? Often times, people are confused by a similar 3 pin connector which is for the phone system. Accidentally plugging the module into the phone connector will damage the module. The voltage polarities are reversed for this connector, and the wiring has a different coloring order. Contact us for a no hassle module replacement if you happen to have plugged the module into the phone connector.

    Did you find the correct CD changer connections, but reversed the module installation? This locks up the iBus, and requires only that you reset the stereo by pulling the stereo fuse for 30 seconds after restoring the proper module orientation.

    If you’ve lost connectivity with your aux input after a successful installation, our first recommendation is to reset the module by removing and replacing the module with the stereo on. This will send a message to the stereo letting it know that the module has been reset. If you have to reset the module often, please contact us for a replacement.

    Every module is tested before it is sent to you, but occasionally you will end up with a faulty module, and contact us for a replacement.

    Cable Installation:
    After you are able to select the AUX input on your head unit, install the AUX cable to the back of the head unit. You must remove the CD changer prewiring from the harness connector. This is attached with a blue clip, and place the AUX cable onto the same CD changer connection. On models that have 12 pin CD changer connectors, skip the first two pins to the left, pins 1 & 6.

    What’s in the kit?
    A CD changer emulator module
    a 1m input cable

    Having Issues? Need installation help? Drop us a line.

    Email us at

    Please Read the installation guide first! =>Quidzel-Aux-Input.pdf

    We are thankful for our customers who have graciously offered their reviews of Quidzel and the Aux Input:

    Submit your review

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    Average rating:  
     13 reviews
    by Sezer on Quidzel

    I'm from France, I received this kit in only 1 week. It works perfectly on my e46 320d year 2000 but only problem is there was too much noise because of ground wire on the mp3 jack which wasn't soldered correctly, so, I had to open the jack by cutting and resolder the wire, now it's work without problems! Thanks!!

    Sorry about the bad wire! We try our best to make sure you get a simple aux input, and I'm glad it was a simple fix for you.

    by Chris on Quidzel
    Works perfectly, Super easy install!!

    It Works on my 2000 323ci, install took 15 min and was super easy, Very happy to find a solution to add an aux to my stock bmw deck for a decent price. Thank you!

    by Sergio Prado on Quidzel
    Awesome product! Works!

    Arrived faster than i thought. It is literally a plug and play device! Had it working in only 15min! Worked for my 2001 325i BMW. Thank you for this product! I struggled to find a way to add aux on my car and this made ur possible. Would recommend!!

    by Landed mac nichol on Quidzel
    Amazing product

    This thing is awesome. I ordered it on a Saturday, it arrived Wednesday. Install and setup was as easy as advertised. I have a 2000 323. Business model head unit w/ no aux button. Now I can use my iPhone with my original head unit. I really like the fact I can use my steering wheel controls for volume. Fast delivery ,easy instructions and a product that works as advertised. Thanks!!

    by Jonathan on Quidzel
    Wow! Amazing Product!

    Yo! This little device is amazing! Plugged it in just as shown on the diagrams and voila! Aux in! Very happy with the new ability to play my own music. Thank you so much for making the BETTER alternative to buying a new head-unit just for aux!

    by Alex Millar on Quidzel
    Fantastic Customer Service and Product

    The aux setup was extremely easy to install thanks to the clear, simple instructions. Initially the module I received didn't mesh well with my car so I contacted their customer service and was greeted with a very fast and helpful reply. Long story short, I had a very pleasurable experience dealing with these guys and will recommend them to anyone looking for this sort of product.

    Thanks for the very kind words! We strive to give our best for each customer.

    by Bryan on Quidzel

    Awesome product! Very clear instructions made this a simple install. Finally a product that offers those of us with older head units the option for aux input and for a great price, THANK YOU!!!

    by Vhin on Quidzel

    Inexpensive way to add AUX capability to your E46. Technical literatures and videos on how to make this a DIY are readily available making the install a breeze.


    Thanks Vhin! We will continue to do our best to serve you!

    by Adam Sarnovsky on Quidzel

    This is the greatest thing ever. You have saved me from the static of the radio and the hiss of cassette tapes. It was a really simple install. Everything worked perfect the first time and I am still in shock that I can finally listen to my ipod in my 2000 328i without having to use a knock off head unit 🙂

    Thanks for the review Adam!

    by Jared DeGraff on Quidzel

    Works great in the E39 platform as well, had some glitches but Sam was very quick to act and iron them out. Even contacting me first after a post I had made on one of the forums. Great product great service.. I've ended up giving many reveiws on the E39 forums. Good work guys.

    Thanks Jared!

    Page 1 of 2:

    Blog : Life

    I don’t often share personal details here, but I figured as long as people are coming here, whether to buy an aux input kit for their BMW or to check on the bluetooth module status, I’ll give some personal background. As some of you know, I’m pretty passionate about the BMW brand, but it didn’t start out that way. When I was growing up, this guy whose brother was my age always had beater BMWs and loved them, specifically some of the 6 series shark nose cars from the 80’s (which now are classics!), but I wasn’t too thrilled with them at the time. I always thought the 80’s BMWs were stodgy and underpowered from my experiences with my buddy. That all changed in the early 2000s in college, when another buddy showed me the e39 M5.

    From that day I was hooked – I was going to get my hands on a BMW when I graduated engineering school. After college, I got myself a ’97 528i in Aspen silver, manual transmission, and rebuilt title. But I loved the car – in spite of overheating adventures, it led me to an ’01 530i sport, then finally I got my hands on an ’02 M5. I had all the add ons I could get including MK4 nav, BMW Bluetooth ULF (phone only), and the Intravee/Alpine iPod integration. Even with this, the integration wasn’t that great, and I started playing around with whether I could do something better myself in about 2011.
    I started playing around with small microcontroller boards (Arduino) and got a basic CD changer emulator functioning using the great resources available from those who went before, and a lot of hard work. The goal was and is to have bluetooth integration, but along the way, I figured I’d try to sell a productionized CD changer emulator to help those of you who don’t have an aux input. I figured I’d sell a few, and it would be a stepping stone to offering the bluetooth integration. Mind you, Quidzel was (and is currently) a side project that I did in my free time before kids – my day job was as an EE in aerospace R&D. So the aux input started selling more than I thought it would, and I was hopeful that this was my big step into entrepreneurship, something that I’ve always dreamed about. I took some time off work, and focused on this for a few months. During this season, my wife and I were blessed with twin boys, which slowed development down a lot. I went back to work as selling aux inputs for BMWs doesn’t exactly replace an engineering salary, which slowed things down more. Most of the development work I’ve done happened before April. Since then, working full time, buying a new house, and we have a 3rd addition to our family hasn’t helped things. I also had sold my M5, bought an e46, and then I recently got a BMW i3, which actually has pretty good bluetooth integration.