[jjkz24]

Howdy Folks,

I've searched pretty extensively, and I think I just need to create a new post for my question.

I have a 2019 X3 with the 676 Hi-Fi system, non-RAM.

I'm getting ready to add a mono amplifier with subwoofer, and I'm looking for a wiring diagram for the outputs of this OEM amplifier. My goal is to add my LOC to the outputs that go to the under seat woofers.

Thanks!

[Marc R]

Following

[jjkz24]

Originally Posted by Marc R

Following

I may end up just unbolting the front seats to gain access to the woofer wiring. From there, I should be able to identify and document the specific wiring colors that correlate to those speakers, then report back.

[KmanM3]

Will this work?

https://technicpnp.com/product/hifi-...ub-harnessloc/

[jjkz24]

Originally Posted by KmanM3

Will this work?

https://technicpnp.com/product/hifi-...ub-harnessloc/

Thanks, but that’s not showing me a wiring diagram. I’m not looking to purchase a harness at this time

[avi66]

Originally Posted by jjkz24

Thanks, but that’s not showing me a wiring diagram. I’m not looking to purchase a harness at this time

PM me your VIN and I’ll see what BMW ISTA throws up.

I assume you want the pinouts for the connector to the 676 HiFi amp.

The ID6 676 HiFi outputs multi-channel analogue from the NBT Head unit, so it should be possible to intercept the pre-amplified analogue output from the HU if you prefer.

[dt86]

Originally Posted by avi66

PM me your VIN and I’ll see what BMW ISTA throws up.

I assume you want the pinouts for the connector to the 676 HiFi amp.

The ID6 676 HiFi outputs multi-channel analogue from the NBT Head unit, so it should be possible to intercept the pre-amplified analogue output from the HU if you prefer.

I would also appreciate wiring diagrams to add a LOC/amp/sub! save me from prodding around back there trying to find speaker outputs..

[jjkz24]

I promised an update on this. Here are my findings.

Please note that the wire colors listed below are the amplifier outputs, and what you would see at the under seat woofer connector. Verified at the woofer connector using a multimeter:

USA models:
Left under seat woofer
Black wire w/brown tracer = Positive
Black wire w/red tracer = Negative

Right under seat woofer
Blue wire w/red tracer = Positive
Blue wire w/brown tracer = Negative

Hope this helps anyone else

[avi66]

Originally Posted by jjkz24

I promised an update on this. Here are my findings.

Please note that the wire colors listed below are the amplifier outputs, and what you would see at the under seat woofer connector. Verified at the woofer connector using a multimeter:

USA models:
Left under seat woofer
Black wire w/brown tracer = Positive
Black wire w/red tracer = Negative

Right under seat woofer
Blue wire w/red tracer = Positive
Blue wire w/brown tracer = Negative

Hope this helps anyone else

That appears to be the same colour scheme as the ID6 Top HiFi.

[jjkz24]

Originally Posted by avi66

That appears to be the same colour scheme as the ID6 Top HiFi.

Interesting

They're showing the Black wire w/brown tracer as the negative, and black wire w/red tracer as the positive. I just double checked with my multimeter again, and what I have listed above is showing the correct polarity. Maybe the information within the diagram is incorrect?

[avi66]

Originally Posted by jjkz24

Interesting

They're showing the Black wire w/brown tracer as the negative, and black wire w/red tracer as the positive. I just double checked with my multimeter again, and what I have listed above is showing the correct polarity. Maybe the information within the diagram is incorrect?

It’s from BMW’s ISTA diagnostic and repair tool, so you would hope it’s accurate given BMW dealers use it for repairs procedures.

The diagram is for a different AMP, so I can’t say for sure what your HiFi version is as ISTA is VIN based, and I don’t have an ID6 HiFi 676 VIN.