I wanted to add an audio input to my antique volkswagen's Autoradio, but a simple audio câble was not smart enough. So I decided to add some bluetooth to it.
Step 1: Get the stuff
Ok, what we need now is a cheap AD2P bluetooth headset, you can buy one on ebay for exemple. You'll need an enclosure for your project too, I tought it was cool to use a vintage tape as my enclosure.