I installed a USB charger that fits in the "type B" European style cigarette lighter plug that our cars came with. It has two ports both the higher 2.4 amp type. Here is the link for what I purchased:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
I had hoped that the unit would fit perfectly flush, but it does stick up a little, making it look very much like the original lighter that came with the car. So, it works and it resembles the original lighter. Plus, I did not have to remove or mess with the socket.
Ron