I just bought a new 2005 3500 Dually and would like to hook up my trailer brake control. The manual says that there is a 4 pine plug under the dash, but I can't seem to find it. Can someone give me a location as to where abouts this plug is and maybe the color of the plug? I found one that had 6 pins with 5 of them having connecting pins and it was blue.....
Help?
Help?