Hello: I have an 03 Durango SLT Plus with the RAZ radio , am, fm, cassette with cd player.Don't see anything about premium sound or infinity radio. Has 2 speakers on each front door , one high on the panel, a small one , one low on the panel a bigger one . I bought it used and the speakers in the drivers door do not work . Didn't know if anyone else had this problem. Didn't want to just tear into it without checking with you guys for advice.Went to my local Dodge dealer for a wiring diagram but they were no help . Hope someone can help. Good Luck . O - R