I currently have a car headunit that uses a combnation of USB (audio and control) and 3.5mm jack (video) that was designed for iphone 4/4s.
I now have an iphone 5. which i can't use the current cable with removing my ability to deisplay video. audio and controls still function fine.
My question is. I if i cut off the current 30pin connector off and spliced a lightning connector onto existing cable in its place. Will this cable function properly. Would it be as easy as, colour matching the two cables or is there a lot more to it. Could it be done with correct pin-outs?