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Old 05-09-2019, 05:42 PM   #1
free_refil
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Default '16 STI w/H\K Amp, Maestro, SU2

Guys, I have a question. Going to install an AVH2300NEX with the iDatalink Maestro RR and SU2 harness into my 16 STI w/H/K amp. All is going swimmingly, except I have some confusion on the wiring diagrams. They show 2x 3.5mm audio cords going to the deck. One is labeled "aux" and comes from the SU2 harness. I think this is for the AUX port in the center console. However, from the Maestro, there is also a 3.5mm audio cord coming out, and the diagram shows it as "Audio Cable". Where would this "audio cable" go on the headunit? Is it actually the wired remote jack?
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Old 05-10-2019, 09:25 AM   #2
SirBrass
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One 3.5mm is the SWC, the other is the Aux audio input.
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Old 05-10-2019, 11:05 AM   #3
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Quote:
Originally Posted by SirBrass View Post
One 3.5mm is the SWC, the other is the Aux audio input.
Ok, so, the one labeled AUX from the SU2 harness goes to the aux input on the radio, and the one from the Maestro goes to the SWC jack?
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Old 05-10-2019, 11:43 AM   #4
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Quote:
Originally Posted by free_refil View Post
Ok, so, the one labeled AUX from the SU2 harness goes to the aux input on the radio, and the one from the Maestro goes to the SWC jack?
Yes. The diagram from the install instructions off of iDL's website should show that.
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Old 05-10-2019, 11:55 AM   #5
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Originally Posted by SirBrass View Post
Yes. The diagram from the install instructions off of iDL's website should show that.
You would think, but it's not quite clear. It simply shows AUX and "Audio Cable" going to the head-unit with no clear indication which ports they go in. Other information I found online stated that the "Audio Cable" from the Maestro goes into the AUX port and the Maestro takes control of it to use it for data, so you effectively lose the AUX headphone jack input on the back of the head-unit. This also means that in order to retain my AUX port from the SU2 harness, I'll have to use a 3.5mm female audio jack to male RCA adapter and plug it into the AV inputs on the receiver and use the AV input rather than AUX input for the AUX port in the center console. Look at the diagram:
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Old 05-12-2019, 08:08 PM   #6
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Figured it out through a little troubleshooting. The "Audio Cable" from the Maestro goes into the AUX port. The AUX cable from the SU2 harness has to have a 3.5mm female to RCA male adapter to run to the A/V input on the back of the stereo. You lose your AUX input to the Maestro.
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Old 05-12-2019, 10:48 PM   #7
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Here is my two cents, but couldn't you just use a 3.5 aux splitter? That way you would be able to connect both audio cable and aux cable into the same port and not lose any function

https://www.amazon.com/Belkin-Speake...gateway&sr=8-5


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Old 05-13-2019, 01:32 AM   #8
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Quote:
Originally Posted by free_refil View Post
Figured it out through a little troubleshooting. The "Audio Cable" from the Maestro goes into the AUX port. The AUX cable from the SU2 harness has to have a 3.5mm female to RCA male adapter to run to the A/V input on the back of the stereo. You lose your AUX input to the Maestro.


What happened when you switched the AUX jack accidentally, do you still have audio coming out from the speakers?
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Old 05-13-2019, 08:37 AM   #9
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Quote:
Originally Posted by free_refil View Post
Figured it out through a little troubleshooting. The "Audio Cable" from the Maestro goes into the AUX port. The AUX cable from the SU2 harness has to have a 3.5mm female to RCA male adapter to run to the A/V input on the back of the stereo. You lose your AUX input to the Maestro.
This isn't making sense. Are you saying that the "audio cable" from the maestro goes into the factory AUX port in the center console of the vehicle, and the AUX cable from the SU2 harness goes into the AUX input on the back of the aftermarket HU?
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Old 05-14-2019, 10:07 PM   #10
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Quote:
Originally Posted by SirBrass View Post
This isn't making sense. Are you saying that the "audio cable" from the maestro goes into the factory AUX port in the center console of the vehicle, and the AUX cable from the SU2 harness goes into the AUX input on the back of the aftermarket HU?
No, the Audio Cable from the Maestro goes to the 3.5mm AUX input jack on the Pioneer H/U for wired remote inputs, oddly enough. The AUX cable from the SU2 harness is the center console jack, and since the 3.5mm AUX input on the Pioneer is used by the Maestro, you have to get a 3.5mm headphone jack to RCA adapter and plug it into the A/V input on the Pioneer to retain the port in the center console. The 3.5mm wired remote input on the Pioneer is unused.
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Old 05-14-2019, 10:08 PM   #11
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Originally Posted by arempee26 View Post
What happened when you switched the AUX jack accidentally, do you still have audio coming out from the speakers?
When the AUX wire from the SU2 was plugged into the AUX jack on the Pioneer, the steering wheel controls would no longer work.
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Old 05-14-2019, 10:09 PM   #12
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Quote:
Originally Posted by BrasilianBoy07 View Post
Here is my two cents, but couldn't you just use a 3.5 aux splitter? That way you would be able to connect both audio cable and aux cable into the same port and not lose any function

https://www.amazon.com/Belkin-Speake...gateway&sr=8-5


No, the Maestro basically converts the 3.5mm AUX input jack on the Pioneer into the Wired Remote input. It no longer passes audio, just steering wheel controls "data". And I used this adapter to retain the AUX input in the center console to work on the A/V input of the Pioneer: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Old 05-14-2019, 10:10 PM   #13
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Quote:
Originally Posted by free_refil View Post
No, the Audio Cable from the Maestro goes to the 3.5mm AUX input jack on the Pioneer H/U for wired remote inputs, oddly enough. The AUX cable from the SU2 harness is the center console jack, and since the 3.5mm AUX input on the Pioneer is used by the Maestro, you have to get a 3.5mm headphone jack to RCA adapter and plug it into the A/V input on the Pioneer to retain the port in the center console. The 3.5mm wired remote input on the Pioneer is unused.


But why do you want to retain the 3.5 aux if you have Carplay or Bluetooth?
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Old 05-14-2019, 11:50 PM   #14
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Look I could be wrong, but from what I remembered when doing a pioneer (AVH-w4400NEX) install on my friends BRZ, the pioneer not only had an 3.5 aux plug but it also had a steering wheel control plug too. I have found this video that shows that the radio does have an aux and steering wheel plug.

[url]https://youtu.be/s-RuRzsRfE8?t=137[/url


I know this is an AVH-2330NEX but it's the newer version if the AVH-2300NEX that OP has.

Either way from this videos the radio should have a separate input for both aux and steering wheel control. Not saying I'm right or wrong, but if I am let me know.
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Old 05-14-2019, 11:57 PM   #15
arempee26
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Default '16 STI w/H\K Amp, Maestro, SU2

Quote:
Originally Posted by BrasilianBoy07 View Post
Look I could be wrong, but from what I remembered when doing a pioneer (AVH-w4400NEX) install on my friends BRZ, the pioneer not only had an 3.5 aux plug but it also had a steering wheel control plug too. I have found this video that shows that the radio does have an aux and steering wheel plug.



[url]https://youtu.be/s-RuRzsRfE8?t=137[/url



https://youtu.be/W3r6qJHSAoM?t=162



I know this is an AVH-2330NEX but it's the newer version if the AVH-2300NEX that OP has.

https://youtu.be/TAly_BdBYxk?t=111



Either way from this videos the radio should have a separate input for both aux and steering wheel control. Not saying I'm right or wrong, but if I am let me know.


Yes you're right, I installed the W4400 to my 2017 WRX and it does have an AUX port which that's where I plugged in the 3.5 AUX Cable from the SU2 Harness.

Last edited by arempee26; 05-15-2019 at 04:30 AM.
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Old 05-14-2019, 11:59 PM   #16
BrasilianBoy07
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Here is the install instructions I found on idatalinks site. The part that is highlighted talks about the audio cable that OP is asking about. From what it says you have to connect the Audio cable to the iDatalink 3.5 audio jack of the aftermarket radio. It doesn't say to connect it to the aux port. At least that is my understanding. Correct me if I am wrong.

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Old 05-17-2019, 11:27 AM   #17
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Idatalink informed me to not use the audio cable that connects to the unit and that's what I did.
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Old Yesterday, 03:22 PM   #18
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Quote:
Originally Posted by arempee26 View Post
But why do you want to retain the 3.5 aux if you have Carplay or Bluetooth?
For Android fanboys and other guests in the car who shouldn't be pairing with bluetooth. I also keep an AUX to Lightning adapter on the end of it because it usually ends up being someone with an iPhone. The Pioneer CD-IU52 cord for CarPlay isn't very long, and I have replaced my center console 12v outlet with a USB outlet for this cord, so it won't reach to the back seat if someone back there wants to control the music.
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Old Yesterday, 03:23 PM   #19
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Originally Posted by Voyles View Post
Idatalink informed me to not use the audio cable that connects to the unit and that's what I did.
That cable specifically had to be plugged into the AUX cord on my setup for the Steering Wheel Controls to work on my setup. How odd is that?
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Old Yesterday, 03:26 PM   #20
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Quote:
Originally Posted by BrasilianBoy07 View Post
Here is the install instructions I found on idatalinks site. The part that is highlighted talks about the audio cable that OP is asking about. From what it says you have to connect the Audio cable to the iDatalink 3.5 audio jack of the aftermarket radio. It doesn't say to connect it to the aux port. At least that is my understanding. Correct me if I am wrong.

When using the iDatalink on the Pioneer radio, iDatalink takes control of the AUX port and makes it the "iDatalink 3.5 audio jack". When I unplug the audio cable from the Maestro to this jack, my steering wheel controls would stop working. If I plugged it into the steering wheel controls jack, they would not work either.
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