I have a 1993 Bonneville with steering wheel controls. I want to replace the stock radio/cassette player with a stock radio/cd player. The stock radio/cd player I bought is for 1994-1999 Bonnevilles BUT it will work in my 1993 with a modification. What kind of plug or modification do I need?

I moved your thread to the audio section. It will get more attention from the right people to answer your question there.

Where do you find the answer for this question? And yes I've been in the Audio Section where the quote directs me & I keep winding up here.