Does anyone know how to replace the front headlamp bulb? The owners manual/diagrams instruct you to grip the left/right sides of the electrical wire connector block and pull? I have tried this without any success. It just won't come off! I don't want to pull it tooexcessively as it may cause damage to the headlamp unit. I have been at it for over 2 hours and almost given up. Do you have to take it to a Nissan dealer just to replace a simple headlamp bulb?