I feel dumb since I just pulled everything to swap out head gaskets and intake gaskets, but I can't find it in any Google searches nor can I find it under the hood. The truck sat for a while before I was able to put it back together, so my memory fails me. I know it's probably obvious what it is, but I'm a little stuck right now. I think it might be a diode maybe??? Anyway, it's a two pin black plug with a black and yellow wire pinned into the plug, it peels off the main harness near the top/center of the motor. It looks burnt anyway, so I'm probably going to replace it regardless of it's functionality. Any help is appreciated! Thanks guy!