Bluetooth module install for mk2 Focus

[Kaseryn]

Hi all. I've been trying to install a bluetooth module into my mk2 Focus (2007) following some of the info here

https://www.fordownersclub.com/forums/topic/96149-6000cd-aux-instillation-help/

 

and this guide

https://www.youtube.com/watch?v=WTn_UH7n06A&t=346s

 

but am not having much luck. The aux input on the back of my sterero has just the 4 pins available (6000cd oval face)

I installed as is firstly and although the module powers up im not getting any sound. Closer inspection showed the following wiring

 

red pin5

white pin6

yellow pin 11

 

which i thought must be left and ground were the wrong way around? So i spliced to change that but still get no sound. The phone picks up and pairs with the module, and interestingly will mute phone audio when i turn the ignotion key to position 2 so its doing something, but no sound. Am i missinh something obvious or does anywone know what the problem is? Much thanks in advance. I've attached a few pictures for reference..