How to Add a USB Port to a Car Stereo
- 1). Plug the Aux to RCA splitter cable into the Aux port of your stereo system. The Aux port looks similar to the headphones port on your MP3 player. The two split ends on the cable are red and white audio cables.
- 2). Plug the RCA cables into the RCA end of the RCA to USB cable. This cable has the two audio cables and merge into a USB cable. You can find this particular cable at most electronic stores.
- 3). Plug the USB cable into the device you want connected to the car stereo (such as an MP3 player).
- 4). Set your car stereo to "Aux" and press "Play" on the MP3 player. The music now plays from your MP3 player over the car stereo system.
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