2003 BMW 330ix Car Radio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Red/White
Car Radio Accessory Switched 12v+ Wire: Violet/White
Car Radio Ground Wire: Brown
Car Radio Illumination Wire: N/A
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: White
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Front Left Speaker Positive Wire (+): Yellow/Red
Front Left Speaker Negative Wire (-): Brown/Orange
Front Right Speaker Positive Wire (+): Black/Red
Front Right Speaker Negative Wire (-): Brown/Orange
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Rear Left Speaker Positive Wire (+): Yellow/Black
Rear Left Speaker Negative Wire (-): Black/Orange
Rear Right Speaker Positive Wire (+): Blue/Black
Rear Right Speaker Negative Wire (-): Black/Orange
2 thoughts on “2003 BMW 330ix Radio Wiring Diagram”
Jamie, you would have to install automotive auxiliary input adapter. An automotive auxiliary input adapter will allow you to input any mp3 player or portable music player into your factory radio. This is the easiest and most cost effective way to add an audio input into your factory stereo. Here is the adapter you will need:
Auxiliary Input Adapter for 2003 BMW 330i
If you’ve never installed car audio before, we advise you to take your car to an experienced mobile audio installer. Hope this helps. Good luck with your 2003 BMW 330i aux input adapter installation.
I would like to know if there is anything reasonably priced on the market that will allow me to play my MP3 player in my 03 BMW 330i? And if so where can I purchase the item locally?
Thanks,
Jamieann