I tried and when I turned the key on and walked to the front of the truck I heard a click click about 20 times and then it quit clicking. the clicking was coming from the rear of the engine near the turbo and most likely under the air cleaner. I saw videos of the glow plug controller and I am sure that is what is clicking.when I turned the key on again and walked around front and jumped the two large terminals of the solenoid on the inner fender and all it would do was spark. Would it likely be the Fender solenoid or possibly be the solenoid on the starter itself? Or maybe the ignition switch or a short in the massive Harness system. The small red wire that is connected to the large terminal by itself that is laying on the crossmember and headed toward the starter solenoid on the starter.