Sorry last question can you get a Microphone that goes in to the Interior Light That will fit pioneer da120? I did look but didn't really find anything.

You will get a mic with the headunit if its got bluetooth. It will take a bit of work to fit by the light. Mine is on top of the steering columb

ive only just seen this thread, i didnt know you could just get a already made canbus harness. this is the one il be ordering, just want to double check to see if you guys have tried it too

 

https://www.dynamicsounds.co.uk/cthue-sk1-skoda-fabia-octavia-roomster-car-stereo-wiring-iso-adaptor-with-ignition-generator.html