I am totally new to Mercury outboards and I need some one to save me from being stupid. I have a 2004 50hp 2 stroke, and the top spark plug wire came out of the CDM. The end of the wire just looks blunt, like it was cut, and when I look in the hole on the CDM there's a tapered screw. Do the wires screw into the CDM, or is there a plug stuck in there? Are the spark plug wires integrated into the CDM?