I have to weld the bracket/plate that goes under the radiator from frame to frame, ythe one the plastic engine cover attaches to. The PO hit something and on the drivers side its bent and cracked so I want to heat it and run a 3" bead of weld where it was factory welded to the main frame stub, right behind where bumper attaches. What precautions do i need to take so I don't fry any electtronics? Just disconnect the battery and I'm good to go? Or do I have to disconnect the ECM, which I'm not sure where it is, I do see a smal box under the windshield wiper cowl.