lost ... this is new to me .1st. question senairio woke up 8:30am opening window blinds and noticed lt. smoke comming from under the hood.sure enough ,a fire started on what i now know as erg valve wire this located in line w\intercooler 3in pipe.it just started when i 1st. saw it.i put out fire ,the problem wire a [heavy gauge]was making the erg housing red hot in midle bolt.there was no key on,or any reasonable cause for this happening?duramax 6.6 lmm chevy c5500 kodiak 2006.any ideas ? anyone