Hi @piero90
'''WARNING''', please do not directly solder and use it.
Cigarette adapter in cars output mostly is '''12V'''
https://www.nonda.co/blogs/news/134861575-understanding-common-car-charger-specs
'''USB uses 5V.'''... direct 12V can kill your devices
If you see the USB 2.0 wire layout.... there are four cables vcc, d-, d+, gnd
https://www.chipworks.com/about-chipworks/overview/blog/systems-analysis-apple-lightning-usb-cable
I would suggest you to get a cigarette adapter to USB charger as it has been converted to 5V and USB standards. You only need to get MFI certified lightning cables to charge your apple devices.
https://paracable.com/pages/what-is-apple-mfi-certification