Please choose the correct ending to complete the given sentence: Work World: [header] How to remove beetle headlights [title] Disconnect the negative battery cable to eliminate the risk of electrical shock. [step] Sometimes battery cable colors vary, but normally you will find that the red battery cable is positive (+) and the black battery cable will be negative (-). [title] Use a screwdriver to loosen the screw that retains the rim, and then pull out the entire headlight unit.

Ending1: [step] Wear gloves and safety goggles to protect your eyes and mouth while attempting to remove the headlight unit. Be careful and gentle to avoid damaging the surrounding oil can. Ending2: [step] Scrape any dirt off the entire bumper, including plastic parts and upholstery. [title] Pull down the dashboard as much as possible to expose any exposed headlight casing. Ending3: [step] Again, there is no need to completely remove the dome light, as the headlight unit doesn't pop away when dropped. Instead, you have to completely break the bumper and remove the lens. Ending4: [title] Separate the wiring connector from the beam unit, and disconnect the wires from the light bulb socket. [title] Hold the lamp unit with your thumb to control the spring, and remove the lens-retaining spring.

Answer format: ending1/ending2/ending3/ending4