Mate. Look here now.
From your interior light there should be four main wires. Black brown white and red.
These are all joint wires. If you follow them back they would be connected to different coloured wires.
You won't be able to run this off the interior light because it all comes from a control unit. Best bet is to get the wires to the head unit. Much simpler there.
Then get a multimeter. All the wires apart from the door control will be there.
Which u can wire to the door switch
From your interior light there should be four main wires. Black brown white and red.
These are all joint wires. If you follow them back they would be connected to different coloured wires.
You won't be able to run this off the interior light because it all comes from a control unit. Best bet is to get the wires to the head unit. Much simpler there.
Then get a multimeter. All the wires apart from the door control will be there.
Which u can wire to the door switch