I just installed the BD exhaust brake and am having touble with it. After it was installed I started the truck and the valve opened all the way. It will not move now. I hooked up the DFIV module to the light blue with black wire on the APPS. Has anyone else used the new DFIV module to hook up the brake? I have power to the box, I am not getting any power out to the exhaust brake soleniod. Any ideas? Can the ecm pin 20 be used to operate to BD brake and where is the connector at?