I tried to add an mp3 input to the stock stereo in my 98 bonneville as described at the link below:
Anyway, I have a couple of questions for anyone who might have tried this. First, when I was putting it back in, the lights in the stereo went out. I checked the main bulb, but it seems OK and besides, all the other lights are out as well. The stereo still functions, but you cannot see the screen. Any ideas where to look for the problem.
Also, while the mp3 input works, the stereo still wants a cassette in and rayaunning in order to play the mp3'*. Does anyone have a suggestion or a fix for this.