I recently installed an aftermarket radioon my 99 deville but i'm having some problems.To install the radio I bought a radio interface which is needed so the car's computer works properly but the thing is the package says "2000 and up Cadillac models"and mine is a 99 . So I would like to hear from other 97 to 99 Deville owners who have aftermarket radios on their cars to see what type of interface it takes.Any response would be appreciated.

 

The deville was restyled in 2000 so its not going to use the same harness. Crutchfield.com will have the harness you need, i believe its around 100 bucks.

 

ill show some pic's of my indash dvd gps radio a lil later cause im at work.. any ? fill free to PM me.