In my never ending quest for minor improvements, I decided to tackle a small issue that I've had since the start. For my stereo, I am using a little Kenwood Bluetooth amp. I made a video a while back about its features.
The amp has a built in USB port that I have been using to charge my phone. While this worked OK, I found that the phone charged very slowly and that if I was streaming Pandora, and was listening to it through the car stereo, the charger actually did not keep up. So over the course of a long road trip, the phone battery would eventually die.
So I went on Amazon and picked up a dual USB, 4.2amp (total) charging port. I was originally going to put it in the panel that holds the controls for the amp, but that was not going to work for various reasons. Instead, I opted to install it where the original cigarette lighter used to be inside the ash tray. This involved enlarging the hole to 1 1/8" which I did with a Dremel tool and a small carbide bit.
The charging port also has a voltage display, which is kind of handy to reference before even starting the car.
Nice thing about having it inside the ashtray is that it is completely invisible when not in use. Now the phone holds its charge while enjoying music on the road.