Holy cow! This thing is stuck on tight. Do I need to just yank until it comes free? Yanking wires behind a plug makes me NERVOUS. Three detents I can see in the plug cap. Do I need to push all three down using all three of my arms? I'm bordering on destroying the plug with pliers, tweezers, split ring pliers and a scratch awl. The guy at the dealership popped it right off when I wasn't looking. HELP!