JoyEAuto Carplay Installation Instructions (Works)
Hi everyone,
So I threw some instructions together. Please reach out to me if you have questions. Overall it works pretty well, but the installation is different than what they have videos for.
This is free for you guys to use, but if you want to donate to my Tune fund, that is cool too. No pressure either way.
Also, if your in the Portland area, or road trip here, I can help you install it. Would be easier the second time.
Video of how it looks and sounds can be found here: https://www.youtube.com/watch?v=qdoU...ature=youtu.be
EDIT - V3.0
Found a great ground loop adapter that fixed all my issues. It is now perfect from a sound perspective.
PAC LPGL-2 Ground Loop Adapter
Last edited by trbofly; May 25, 2021 at 07:02 PM. Reason: Version 3.0
The ground loop isolator I use here was junk. Ruined the sound. I am working on a different solution and reached out to JoyEAuto.
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For those following this thread, I updated the PDF to version 2.0.
After using the JoyEAuto system for a day, there is indeed an noticeable buzz in the sound. The good news is that there is a super easy and cheap fix. I simply purchased a cheap ground loop isolator and put it between the USB-AUX and the AUX 3.5 cable. All solved and now there is no buzz at all.
Ground Loop Isolator:
Last edited by trbofly; Aug 27, 2019 at 09:46 AM.
If they had provided instructions for our car, it would have been really easy. I just had to wing it a bit since it is a different car.
Sound wise, its good. Not perfect, but really good. Ultimately it is just stereo through an AUX cable so that is the quality you should expect. All Car Play functions work (including Siri and voice texting). All normal car functions work fine.
I will say that it is not the same as factory integration of course. You switch between car play and normal car functions. You either choose to use Waze / apple maps, or you choose to use your normal car maps. But, for a $400 aftermarket way to have better control over your music and use WAZE, its pretty good.
Instructions are long since I didn't want to miss any details for you guys, but I could honestly do it all again in about 2 hours (Siri mic is the hardest part)




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I have been been playing with eq settings to make it a bit better, but it is what it is. I will update with a full review after I live with it or a few days
Just finished my sub install, so I need to figure out how to tune it all better.
If if anyone could figure out how to enable Aux in for this vehicle, there may be a way to bypass the usb dongle.
The Best of Mercedes & AMG




I have been been playing with eq settings to make it a bit better, but it is what it is. I will update with a full review after I live with it or a few days
Just finished my sub install, so I need to figure out how to tune it all better.
If if anyone could figure out how to enable Aux in for this vehicle, there may be a way to bypass the usb dongle.




Wish there would be a better solution but Mercedes has to take the blame for having 2018/19 MY cars still without CarPlay, low production models or not.
I ordered a new, higher quality, ground loop adapter (link below) and it fixed the buzz and sounds great. I have also uploaded a video of how it looks and sounds (and compares to the stock maps). I also updated the install instructions to match.
As far as I am concerned, its a complete and done install. I am very happy with it and happy to help anyone else who takes this on.
Video: https://www.youtube.com/watch?v=qdoU...ature=youtu.be
Ground Loop Adapter: (PAC LPGL-2)
I ordered a new, higher quality, ground loop adapter (link below) and it fixed the buzz and sounds great. I have also uploaded a video of how it looks and sounds (and compares to the stock maps). I also updated the install instructions to match.
As far as I am concerned, its a complete and done install. I am very happy with it and happy to help anyone else who takes this on.
Video: https://www.youtube.com/watch?v=qdoU...ature=youtu.be
Ground Loop Adapter: (PAC LPGL-2)
https://www.amazon.com/PAC-LPGL-2-2-...%2C196&sr=8-15
As someone who daily's my car, I dont notice any issues, fuzzyness or compression artifacts. Then again, I am not an audiophile. I don't notice any difference from the JoyeAuto setup vs the USB direct (but I am playing iTunes music and not lossless).
Your mileage may vary
As someone who daily's my car, I dont notice any issues, fuzzyness or compression artifacts. Then again, I am not an audiophile. I don't notice any difference from the JoyeAuto setup vs the USB direct (but I am playing iTunes music and not lossless).
Your mileage may vary
Download free 30 day TIDAL high definition and make sure you have the settings in high definition and you tell me
I ordered a new, higher quality, ground loop adapter (link below) and it fixed the buzz and sounds great. I have also uploaded a video of how it looks and sounds (and compares to the stock maps). I also updated the install instructions to match.
As far as I am concerned, its a complete and done install. I am very happy with it and happy to help anyone else who takes this on.
Video: https://www.youtube.com/watch?v=qdoU...ature=youtu.be
Ground Loop Adapter: (PAC LPGL-2)
https://www.amazon.com/PAC-LPGL-2-2-...%2C196&sr=8-15
For the ground loop adapter, I did the following.
- Wires: I only plugged the 3.5 connector coming from the harness into the "In" side, and then the USB adapter into the "Out" side. No other wires are connected or needed.
- Placement: I zip tied it to the wire bundle that runs the right side of the center console area before I buttoned things up. Basically it sits underneath where the shifter is, but to the passenger side. I zip tied it to keep it from rattling.
Hope this helps.
For the ground loop adapter, I did the following.
- Wires: I only plugged the 3.5 connector coming from the harness into the "In" side, and then the USB adapter into the "Out" side. No other wires are connected or needed.
- Placement: I zip tied it to the wire bundle that runs the right side of the center console area before I buttoned things up. Basically it sits underneath where the shifter is, but to the passenger side. I zip tied it to keep it from rattling.
Hope this helps.
Thank you for your information. On the ground loop adapter are 2 brown wire, should I connet them to the ground in the car?
Thank you and happy new year.




