Need your help installing a Bluetooth antenna in my X5.

[ArNarX5]

Hello everyone,

I recently added the Bluetooth module to my 03 X5 4.4. I was able to connect with the existing wires in the trunk. My phone connects with no problems, but when connected, there is a lot of static and the connection frequently drops.

I realized that the car may not have a Bluetooth antenna installed, so I purchased one but I am unable to find where it plugs in. I've included some pictures of the trunk area and another one of underneath the center console where there is a purple wire that says Bluetooth antenna on it but I don't know where either end goes.

Also, does anyone know what the colors on the Bluetooth TCU stand for? When I connect the Purple cable to the Black colored connection, the system works. It does not connect to the purple connection because it physically won't fit the connection. There is also a white and blue connection that I don't know what they're for.

Any help is greatly appreciated!