Removing Spark Plugs

I am trying to replace my spark plugs on my 97 GT and I can't pull the wires off. I don't want to use too much force and break my wires. Is there a trick to them or should I just use more force? Thanks

Try to twist the wire before you pull on it. When you twist it, it should break free and become easier to twist. Then you can try to pull on them with a little more force, just try to pull straight out on them and not up or down or anything to put more strain on the wire.