2003 Navigation system AUX install

rorukz · 2023-03-16T23:15:34-0400

Hi all, I have a 2003 330ci with a navigation system, cd changer and dvd player. I recently purchased a 3-pin aux connection (https://www.fruugo.co.nz/aux-audio-...mY-Cm1e8mKgSa6XhmGaKB4QLLde5YLnxoCrPcQAvD_BwE)

However, when I plug it in, I'm still unable to get to the aux screen using the mode button. I have tried changing the position of the pins, swapping the ground and left connectors but still no luck. Is anyone able to help please.

4004 · 2023-03-17T06:06:07-0400

A 3 pin connector is new to me, but the usual question would be: does your radio support AUX input (2003 in theory should), and whether it's one of those aftermarket cables that requires a resistor to be recognised by the radio - both points have been covered before

rorukz · 2023-03-17T06:10:15-0400

4004 said:
A 3 pin connector is new to me, but the usual question would be: does your radio support AUX input (2003 in theory should), and whether it's one of those aftermarket cables that requires a resistor to be recognised by the radio - both points have been covered before

I believe that’s what the plastic ball looking thing in the cable is. I have since striped back the protective wrap around the cord and checked the connections, they seem fine. It is a fairly cheap cord though.

rorukz · 2023-03-17T08:43:41-0400

4004 said:
A 3 pin connector is new to me, but the usual question would be: does your radio support AUX input (2003 in theory should), and whether it's one of those aftermarket cables that requires a resistor to be recognised by the radio - both points have been covered before

Do you know how I would short out the aux connector on the harness to test that the plug actually works?

ZiprHead · 2023-03-18T20:58:43-0400

How did you connect the aux adapter to the radio? That part isn't clear?

rorukz · 2023-03-18T21:00:50-0400

ZiprHead said:
How did you connect the aux adapter to the radio? That part isn't clear?

I just used the free plug in the harness behind the headunit.

ZiprHead · 2023-03-18T21:04:41-0400

rorukz said:
I just used the free plug in the harness behind the headunit.

Try the other one. And try turning the plug upside down. I had mine in the wrong receptacle the first time I installed it.

rorukz · 2023-03-18T21:10:58-0400

ZiprHead said:
Try the other one. And try turning the plug upside down. I had mine in the wrong receptacle the first time I installed it.

It is the 3 pin connector, not the cube styled connector.

ZiprHead · 2023-03-18T21:23:46-0400

rorukz said:
It is the 3 pin connector, not the cube styled connector.

I think you need the cube style connector to make the correct connection for the radio to sense the aux is attached.

I have no idea what receptacle you would use to connect a three pin connector.

rorukz · 2023-03-18T21:25:05-0400

ZiprHead said:
I think you need the cube style connector to make the correct connection for the radio to sense the aux is attached.

I have no idea what receptacle you would use to connect a three pin connector.

The cube style is for nov nav headunits. Mine has a 16x9 screen, these have 3 pin connectors hidden in the harness for aux installs

ZiprHead · 2023-03-18T21:34:37-0400

rorukz said:
The cube style is for nov nav headunits. Mine has a 16x9 screen, these have 3 pin connectors hidden in the harness for aux installs

Ah, I did not realize that. Sorry. I guess I cannot help you any further. My apologies.

I've got over 7000 mp3s on my phone. It would suck not to be able to listen to that. I hope you get it worked out.

rorukz · 2023-03-18T21:39:03-0400

ZiprHead said:
Ah, I did not realize that. Sorry. I guess I cannot help you any further. My apologies.

I've got over 7000 mp3s on my phone. It would suck not to be able to listen to that. I hope you get it worked out.

Yeah it’s really frustrating!

4004 · 2023-03-19T09:57:54-0400

Compare your cable pins to the EBA 0153504_03_en_g.fm (bmwsar.ru)

2003 Navigation system AUX install

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