I made a boo boo not once but twice... but anyway truck is a 2008 2500 cummins which I just welded new rockers and cab corners in. Now truck won’t start, every single light is lit up on the dash, truck is constantly binging and doing all this without a key in the ignition. I did weld them in without disconnecting batteries once again.... fml. All fuses good . I have no idea where to start, I can pull codes so I can communicate with the ecm. Where do I go from here??