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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?

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The Lightning connector dropped support for analog video output as well as iPod out. It won't output video to your car, even if you get an authentic Lightning to 30-pin adapter.

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  • That's not really true. With Apple's 30-pin adapter, you get analog and USB audio as well as syncing and charging. There's a microcontroller (or DAC) in that adapter that makes this possible. That's also why they cost $29. The Cheapo $4 ones from china probably won't do analog audio. – Nilloc Feb 2 '13 at 4:35
  • I should point out that you are right about the video out not working anymore however that wasn't what the question was asking. – Nilloc Feb 2 '13 at 4:39
  • @Nilloc I edited my answer. And reread the question. OP wants analog video out. – duci9y Feb 3 '13 at 9:37
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No, it will not function properly. The Lightning connector is quite complicated and dynamically "rewires" the cables, so you can plug it in in either orientation and it still works. This makes it practically impossible to do a DIY rewiring.

You can get a Lightning to 30 pin adapter to use your iPhone in the car instead.

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