So I install a new head unit after buying a wiring harness for my 03 wrx. after I put it in evrything is fine except my gauges have no light now. There is a wire on the harness for illumination but not one on the cd player harness. I called a local shop and said they all have that and they never wire that one anyways. So I don;t think its that but I try wiring it anyways to the 12 v neg on the cd harness and that lights my gauges but only when the cd player is off. when I tur it on the gauges wont light and the clcok blinks. anyone have any clue