Because the original AM radio in my '65 mustang was broken, I decided to mount a yammp3 in it. It was quite a lot of work and I spend a lot of time trying to find a display that would fit in the radio. At last I decided to go without a display. Who needs it anyway?
The control is done via the preselection buttons. There are small switches mounted behind the keys that connect to the Yammp. A little audio amplifier is used to drive the dashboard speaker. Finally I have music during my mustang trips!

This is the original radio

this is the inside of the finished project

And here is the 'radio' in the car.