I have an 88 300SEL. I have purchased the MB CD manual and I am preparing to replace the spark plugs. When I looked in the manual about spark plug replacement it says I need a special tool to twist the spark plug connector slightly and then pull off using the special tool. I don't have this special tool and I have never encountered wires like this. The ones I have done on other cars just require a slight tug and off they pop. This connector looks like a piece of galvanized sheet metal. Can anybody give me a hint about how to get these wires disconnected and my plugs in without buying some special tool? Don't worry about my feelings if you feel like flaming me either. I feel pretty dumb right now. Thanks in advance.