AUX / USB / Bluetooth Module for K12

[harky]

Hi there
Bit of a Classic question but I havent seen a recent answer.
We want to put in an AUX / USB or BLUETOOTH module into the stock 2004 radio.
I cant seem to find the part online.
Can someone point me at a solution which is plug and play to the back of the radio?

thanks

https://incartec.blob.core.windows.net/media/K12%20Radio%20with%20Trip.jpeg