What exactly is the fiber optic for?

heifetz17 · 10-09-2021, 08:44 AM

I have an NBT retrofit, for which I terminated the MOST loop at the combox. I retrofitted a back up camera yesterday which is when I realized I never transferred the optic cables on the quadlock harness, so they've been disconnected this whole time. I transferred them yesterday, but there's no change in sound or audio quality. What are they for? Or do they not matter because the loop is terminated?

atzebmw · 10-09-2021, 02:09 PM

The MOST connection (fiber optic) is only used with some components.
These components are the…

Harman Kardon amplifier,
6WA/6WA instrument cluster,
DVD changer
TV Modul
Combox

steve@codemybimmer · 10-13-2021, 06:16 AM

Your vehicle solely used Most for the combox which is no longer relevant to the setup you have now.

Standard Hi-Fi non digital amps don't use most since the signal is analog.

heddan99 · 10-13-2021, 01:17 PM

I have a 2015 and there The most bus is between Hu-b and Kombi.
If I disconect The most i loose The information display in The instrument cluster with playing radio station, playing cd title etc.

heifetz17 · 10-13-2021, 01:26 PM

Thanks Steve, that's what I was wondering!

jambodoug · 03-03-2023, 03:34 PM

I'm trying to fit one but I have no fibre optic and can't get signal, Any ideas

issamao92 · 03-25-2024, 07:10 PM

hello guys,
I just bought a new digital cluster, as i have now the analog one, however the new cluster has a MOST fiber optic cable port, and when i checked my head unit it does not have port for fiber optic, is there any solution?
Thanks

heifetz17 · 04-03-2024, 02:29 PM

Reach out to Steve at codemybimmer. His help was indispensable during my retrofit.

10-09-2021, 08:44 AM	#1
heifetz17 Second Lieutenant 90 Rep 234 Posts Drives: 2013 328xi Join Date: Oct 2020 Location: Montana iTrader: (0)	What exactly is the fiber optic for? I have an NBT retrofit, for which I terminated the MOST loop at the combox. I retrofitted a back up camera yesterday which is when I realized I never transferred the optic cables on the quadlock harness, so they've been disconnected this whole time. I transferred them yesterday, but there's no change in sound or audio quality. What are they for? Or do they not matter because the loop is terminated? __________________
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10-09-2021, 02:09 PM	#2
atzebmw Colonel 588 Rep 2,302 Posts Drives: Tesla Model 3 Join Date: May 2016 Location: Germany iTrader: (0)	The MOST connection (fiber optic) is only used with some components. These components are the… Harman Kardon amplifier, 6WA/6WA instrument cluster, DVD changer TV Modul Combox
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10-13-2021, 06:16 AM	#3
steve@codemybimmer BimmerPost Supporting Vendor 665 Rep 1,976 Posts Drives: 2020 G20 320i M Sport Join Date: Apr 2010 Location: Canada & HK iTrader: (2) Garage List 2020 320i M Sport [0.00]	Your vehicle solely used Most for the combox which is no longer relevant to the setup you have now. Standard Hi-Fi non digital amps don't use most since the signal is analog. __________________ CMB Solutions Limited \|codemybimmer.ca Vehicle Diagnostics \| CarPlay Solutions \| Retrofit & Repair Consulting/Programming steve.ma@cmbsolutionsltd.com \| www.codemybimmer.ca Online Store \| Remote Coding Package\| ID6 Retrofit for almost all F Chassis BMWs
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10-13-2021, 01:17 PM	#4
heddan99 New Member 0 Rep 6 Posts Drives: 118i Join Date: Aug 2012 Location: sweden iTrader: (0)	I have a 2015 and there The most bus is between Hu-b and Kombi. If I disconect The most i loose The information display in The instrument cluster with playing radio station, playing cd title etc.
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10-13-2021, 01:26 PM	#5
heifetz17 Second Lieutenant 90 Rep 234 Posts Drives: 2013 328xi Join Date: Oct 2020 Location: Montana iTrader: (0)	Thanks Steve, that's what I was wondering! __________________
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03-03-2023, 03:34 PM	#6
jambodoug Registered 0 Rep 4 Posts Drives: bmw3 series f30 Join Date: Mar 2023 Location: Edinburgh iTrader: (0)	I'm trying to fit one but I have no fibre optic and can't get signal, Any ideas
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03-25-2024, 07:10 PM	#7
issamao92 Registered 0 Rep 1 Posts Drives: BMW F30 Join Date: Mar 2024 Location: Morocco iTrader: (0)	New digital cluster no fiber optic in original head unit hello guys, I just bought a new digital cluster, as i have now the analog one, however the new cluster has a MOST fiber optic cable port, and when i checked my head unit it does not have port for fiber optic, is there any solution? Thanks
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04-03-2024, 02:29 PM	#8
heifetz17 Second Lieutenant 90 Rep 234 Posts Drives: 2013 328xi Join Date: Oct 2020 Location: Montana iTrader: (0)	Reach out to Steve at codemybimmer. His help was indispensable during my retrofit. __________________
	Appreciate 0 Quote