Aux Input CD Stereo Hack

Here's how to add an auxiliary input to your CD stereo on your car.

This method is applicable to almost all vehicles that have an analog CD player. Demonstrated here is a Toyota Corolla.

Adding an auxiliary input to your vehicle is a cheap and easy method to get CD quality audio to your car's sound system from your phone, tablet, bluetooth device or MP3 player.

FM transmitters cause too much interference, static, and have poor sound quality. Aftermarket radios are more expensive, and have a tacky, flashy odd look that won't bode well with a vintage car.

This method employs the use of the CD player lines in the radio. A blank CD is played, and sound input from a 3.5mm stereo extension cable is injected into the analog CD lines going from the radio to the equalizer.

The benefit is the CD player and radio can still be fully functional, and all the equalizer controls (balance, fade, volume, bass, treble, etc) can still be controlled when audio is sourced from AUX.

The radio is opened up and the Left, Right and Ground channels are identified and soldered to. Once the blank CD is inserted, the radio is tricked into reading audio from the CD player, but instead the source is coming from your music device or phone.

A 3.5mm bluetooth adapter can be hooked up to this aux port to expand the functionality to have wireless audio streaming.



Purchase parts and tools for this DIY here:
Aux cable:
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https://amzn.to/2XqxTvE (Canada)
Soldering Iron:
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https://amzn.to/3hA6bcF (Canada)
Solder:
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https://amzn.to/3hy5nF4 (Canada)
Philips screwdriver:
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https://amzn.to/3tJ0yh3 (Canada)


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