2006 c6 4f - I have the mono red low MMI no aux - which has now got a CP lock on one of its components meaning there is no sound. 
 

I am planning to ignore this and try to use the speakers post amp. 
My plan is to T into the multiplug that goes into the amp install another amp and Bluetooth / media player and use the remaining speakers / audio system that way from my phone.

my question as I don’t want to be hacking the hell out of the loom, is there a commercially available loom adaptor with a breakout piece that will leave the car loom factory and allow me to install the new amp media player? 

Simply I want to have a short harness that plugs into the existing amp, and into the existing loom, with extra connector that allows me to use the speakers and power etc. 

Anyone tried this?

Links and thoughts please. 

Edited January 3Jan 3 by Mordred

Turns out it's totally possible.

So I rummaged through my box of old car stuff and found an amp. I then bought a Audi AMP the same as fitted to my Audi A6, one that had been hacked out of the car and had a length of harness still attched (thanks ebay -£20)...

I opened up the amp and cut out the harness connector, I then wired the connector from the Audi amp onto my old skool amp, making sure to pass through the power and open circuit connectors onto the piece of harness and plug.

To drive the amp I bought a blue tooth connector that just needs power and provides a stereo output. 

So I have tried it and it does work although I'm short of a couple of channels, and I need to find a switched live otherwise the amp stays powered up draining the battery...

Connecting it is just a matter of fitting my harness (see pics) inbetween the cars existing amp and harness using the plugs.

All the unconnect wires come from the plug and aren't needed as my amp is now feeding the speakers...

It's a really cheap way of getting something out of the cars sound system if you dont want to fix the existing mmi.

Well done, though it's not the simple plug in bypass that I believe you were hoping for.

hope you,ve found a battery drainage solution