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June 19, 2026

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Tesla Model 3 Stereo - Part 9: Summary and Lessons Learned

Previously, Part 8: Finishing Touches Update 2019-06-05: Something to keep in mind, this article is written for my 2018 Model 3 Long Range with the Premium sound system. If you have a Model 3 Standard Range with a Standard or Partial Premium stereo, some of this information will to be relevant to you and some of it will not. The power systems and speaker locations/geometry will be the same, but you won't have the rear amplifier or subwoofer and some of your speakers will be disconnected. Other people are putting together how-to instructions for the SR/SR+ and the best compilation I've seen is here, on Tesla Owners Online . Additionally, Tesla is continuously updating the Model 3's hardware. At least one wiring connector has changed since I took delivery of my car (the VC_Left 12V turn-on pin is now populated). I expect more changes will take place in the future. Update 2020-06-01: As of Software U...

Tesla Model 3 Stereo - Part 2: Audio Testing

Previously, Part 1: Door Insulation Update 2019-05-31: A summary of this entire project is available in Part 9 . This page covers the initial investigation and Page 9 has the final results, so if anything on this page disagrees with anything on Page 9 then Page 9 is the one you should follow because I don't plan to come back and correct my mistakes in Parts 1-8. ---------------- I haven't started to tear apart the interior of my Model 3 and line everything with insulation just yet. Today I wanted to analyze what's going on inside the factory stereo system. I'm not aware of any method to tap directly into un-equalized, un-split audio coming out of the car's computer, so in all likelihood I'll have to use a signal processor to combine speaker signals and reconstitute the original unaltered audio signal. I'm assuming that will require me to use the two front door tweeters, two front dash speakers, two front door woofers, ...

Tesla Model 3 Stereo - Part 5: Electronics

Previously, Part 4: Hiatus Update 2019-05-31: A summary of this entire project is available in Part 9 . This page covers the initial investigation and Page 9 has the final results, so if anything on this page disagrees with anything on Page 9 then Page 9 is the one you should follow because I don't plan to come back and correct my mistakes in Parts 1-8. This page in particular has a lot of errors. I misdiagnosed the error messages I was getting and as a result I designed a not-wrong-but-incomplete solution. If you're installing aftermarket equipment in your car, you should check out Part 9. ---------------- Last time I said that I was pausing the stereo build process because I was considering returning the car due to computer bugs that made it very inconvenient to use. Those have been fixed. It took three months, but my car is finally working as expected so I'm happily keeping it. And so t...

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