This is a photo of the side of my engine (4.0Liter Inline6, 2002 Jeep Wrangler). Note the Oil Filter, to it's right the CMP, to it's left and up the dip stick.
Behind and to the right of the dip stick is a sensor that appears to be a grounding wire (note the green wire under the dip stick which is coming out of that sensor). There is a black plastic bracket that is clipped onto a bolt going into the side of the block holding the "washer ring" bracket on.
Does anyone know what that is for or too? Note the cable comming out of the CMP does not connect to it.