Sorry to drag up an old post, I have just fitted an aftermarket headunit to replace the premium sound system/nav unit in my 2.4 exec tourer. The issue though is I'm not getting any audio. I believe I need to wire the ACC wire on my headunit to the OEM Amp, I was wondering if anyone new which wire this is?
Is the 14pins plug on existing amplifier comming from radio unit as a speakers and power ? And 20 pin plug is the one which going directly to the speakers?
I got problem to understand it , can I use signal from 14pins plug from factory amplifier to feed my LOC ?
If yes how do you know which blue cable is which one as there are 2 of them .
Also why on the diagram and in the 14 pins plug are 4 grey cables? What are they ?