Some BMW cars have a middle speaker (dash speaker) for the sound of the original navigation system. In this case, if you install the android screen in a normal way, it has some noise in the speaker in dual-zone mode (dual-zone function: using original radio /CD, at the same time, use the navigation function from android).

How to check if the car with the middle speaker?

If your car has such kind of cover on the dashboard (see below photo),

you might take notice, it might be a middle speaker under the cover.

bmw middle speaker

But some cars just have a cover, there is no real speaker inside, thus, you need to have a test, such as using the phone to record the music or navigation voice, that is easy to know if there is a real speaker inside or not.

Why can not offer the cables fit both situations

Some middle speaker is original when you buy the car, such as BMW X5 (E70) X6(E71), they normally with the original middle speaker. In this case, we offer the power cable with 2 connector that is for these original middle speaker, you need to connect it when you install it.


middle speaker connectors
          (middle speaker connector: one is input, one is output)

All of us know, BMW with different versions, even in the same car type, most of them without the middle speaker, and you can also add the "OEM" middle speaker after buying the cars. That means we can not offer all the power cable with these two connectors.

 

What to do if my car has a middle speaker?

Solution 1: Let us know if your car with the middle speaker, we can 

modify the cable for you, also can offer you an external small speaker

The small speaker we offered is just for the voice of android navigation only,

The music (from USB or music apps) still work via speakers, 

This way, your original middle speaker can continue to work the same as before.


(modified power cable with a small speaker for android navigation)

If you don't want the small speaker we offered, just want to use your current

middle speaker for navigation, you can visit the solution 2 as below:

Solution 2:

If you bought the android screen, but you found the car with a middle speaker when installing it, how to do with it? 

Yes, in this case, the only way is to modify the cables and connect to your middle speaker, then your middle speaker would be a specific speaker for android navigation.

Please check the steps as below:

1, Find out this 4 cables (the connector which connects to the back of the android screen)


modification for middle speaker

2, Cut these 4 cables

cut the cable
3, connect these two sets of cables showed as below, and tie up with adhesive tape. ( Below 4 cables are on the other end of power connector),
Connect 4 cables as below:
Blue & White
blue(with black line) & white (with black line)

tape up this two connector, not going to use for this two conector

4, Another side (the side near to the white connector), will connect it to the middle speaker. details showed as below photo:

wire diagram for middle speaker

When you use the factory radio and the GPS at the same time, the radio signal comes from another speaker, the GPS sound from the middle speaker.

Some customers do not accept solution 2, because in this case, the middle speaker will become a specific speaker for android navigation, he might still want the music to come from the middle speaker, in this case, then we just recommend the solution 1.

Remark: If your car doesn't have a middle speaker, then no need to modify the cables like this, all will be plug and play, the GPS sound from the front left speaker, and the radio come from other speakers without interference.