I am referring to a wire that is at the back top of the engine to the left
of the glow plug controller that plus into a metal male connector via a
plastic female connector. For some reason when I get in my truck in the
mornings to start it, the glow plug light doesn't come on. I remove the air
cleaner system to access that wire and wiggle it around a bit and then the
light comes on. It seems to be on there tightly so I do not know why it is
doing this. It seems to do it more when it is really cold out too. Anyone
have any ideas or anything here to help me please? Thanks.