go to best buy we sell the adapter so everything works like it should for about 110 . it retains the dome light supervision , door chime and most importantly parts of the instument cluster . i cant say enough especially gm vehicles after 98 DO NOT cut the harness , most gm went to no switched voltage behind the radio after 98 and then the dreaded onstar , then rds , then amps , so that one harness does alot