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4,000 rpm - entering the fun zone
DIY: AUX input for OEM NA Type 1 head unit.
Say you're me, and you actually like the look of the OEM radio, but want an AUX input. I've been using a cassette adapter for a while, but the audio quality is just horrible so I began looking for other ways to incorporate an external audio source. I began digging through some old threads and found that a few of them linked to an image/wiring diagram for an AUX input using the 13-pin CD connector in the back of the OEM Type 1 radio that most NAs came with.
The image was hosted by a site long gone, but I was able to scrap it back up with the help of archive.org. The guy who came up with this diagram, Jeff Anderson is still around, and even replied to a few emails when I was figuring out how to do what. Diagram below.
Basically, you are emulating the OEM CD player that some cars came with. If yours didn't, it came with a blanking plug that has the top 4 pins still there. You remove that plug, no audio. Replace it with the above, and you can control the audio source on the other end.
I will include some actual photos at some point, but all of the parts required for this can be had from eBay or Amazon, wires are regular audio wires. I skipped the "Tie all wire shields together/ground" bit, and it works fine. I now have a switch hidden in the center console that lets me switch audio source from radio to RCA/AUX.
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The Following 5 Users Say Thank You to Roadster7 For This Useful Post:
DT97STO (08-21-2018),fwdtamiya (07-17-2017),NCGreasemonkey (05-03-2017),oldgrayleather (07-17-2017),tsingson (07-17-2017)
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