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-   -   iBUS installation location (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/109925-ibus-installation-location.html)

Overboost 03-05-2019 06:09 PM

Quote:

Originally Posted by Wangwolf (Post 1156691)
You ordered the avant 4 right? Mine came with a pigtail off the main harness for the iBus USB

Quote:

Originally Posted by mr_robot (Post 1156696)
Yes but my harness will be at the trunk so I want to confirm if I should extend the wires or get a USB extension.

USB extension being the easier option.

Maybe I misunderstood but if his harness with the iBus pigtail is in the rear, then the CD changer 3 pin connector is inches away :dunno:

mr_robot 03-05-2019 06:15 PM

Yes but the USB port is still on the headunit up front.

Overboost 03-05-2019 06:35 PM

Quote:

Originally Posted by mr_robot (Post 1156713)
Yes but the USB port is still on the headunit up front.

Yes, I misunderstood then. I thought the Android harnesses were based in the rear for previous factory nav units. I don't have nav so I don't know the harnessing.

mr_robot 03-05-2019 06:40 PM

Basically the plug you have behind the dash is in the trunk under the spare wheel.

So we use the provided Harness to connect there and extend the connector that goes in the radio all the way to the front.

Overboost 03-05-2019 07:05 PM

If you want to tap into the LCM wires, pin 36 is iBus and you can grab pin 39 for the reverse signal to the rearview mirror so it is not a PWM signal.

https://www.newtis.info/tisv2/a/en/e...0i-sav/rikN3Ho

crystalworks 03-05-2019 07:07 PM

^Nice info. I'm going to try that method for the iBus data wire. Will report back as to effectiveness. Thanks OB.

wpoll 03-05-2019 07:57 PM

Quote:

Originally Posted by mr_robot (Post 1156664)
What would be the difference between extending the ibus wires vs the USB end? Really baffled.

a ton of difference... :D

USB is a high-speed, short distance data bus with very little error correction.

iBus is a low-speed data bus designed to run in (electrically) noisy environments over long wires and has robust error detection/correction.

Guess which one will stand extending... ;)

mr_robot 03-05-2019 08:34 PM

Quote:

Originally Posted by wpoll (Post 1156720)
a ton of difference... :D



USB is a high-speed, short distance data bus with very little error correction.



iBus is a low-speed data bus designed to run in (electrically) noisy environments over long wires and has robust error detection/correction.



Guess which one will stand extending... ;)



Ah ok thanks for that, I was thinking it was just as simple as flow of electricity.

Crowz 03-05-2019 09:30 PM

There is no advantage to putting the adapter in the back of the car. Using my howto you can see where to tap into for the ibus adapter. Any device in the car that is on the ibus will have the same "signal" quality no matter where it is. Its a bus not an antenna wire.

Crowz 03-05-2019 09:40 PM

This page shows you everything you need to know to install the ibus adapter :

BMW IBUS Adapter – Android | Crowz Nest

Note I had the factory nav so this install is exactly like yours except I didn't have dsp which has no effect on how to install the ibus adapter anyways.


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