This adapter allows you to print in place a usb wire so that it can sit within the NC1 Miata's oem 12V port to allow for a usb connection to your android radio. Print in ABS or similar heat resistant material. Depictions of the process show below.

Simply use a filament change code at the level just before the bridging of the usb port and you can squeeze the wire in. I cut a lot of the USB plastic off so that it would be a perfect rectangle for modeling and placement. The notch on the side allows the door to open and close.

I accidentally printed mine vertically but would've preferred horizontal so have included both file types. I used 15% infill and it seems plenty strong for the application.