I have a 03 7.3 SD with a electrical problem. I started hearing a clicking/static type noise from under the dash. I was able to find it was coming from the black plastic box housing the relay under the radio. I replaced it with a new flasher relay and checked it to see if it worked. The turn signals and emergency flasher work but the relay continues to click when they are turned off as long as the key is on. I am not sure what is causing it, turn signal unit on the column? Any suggestions would be greatly appreciated !