I posted about a portion of this problem back in August and after not really getting any info I just gave up on it. However, it's gotten worse and I really need your help. When I posted in August, I was having problems with the DIC but like I said I decided to live with it since nothing I did seemed to make a difference. Now not only does the DIC not work but noew the Heater Control is going bonkers. I have replaced it but there's no change. No matter what controller is in, if you push the rear defrost button everything on the controller starts flashing. Sometimes everything will start flashing just for the heck of it without touching anything. when that happens, it stops working. It doesn't matter if the AC is running or if the heater is running. Sometines I can turn the cr off and it will reset and other times it will just reset itself and other times it will keep flashing. As far as the DIC goes, it will light up sometimes but it usually does nothing. Are these units somehow connected and if so does anybody have wiring diagrams for them?