There are strange three bumps on the headlamps face. What are they used for? Some lightbeam adjustment ?
Do I really need them there ?
I want to restore the shine of my headlamps - can I grind them down? Is there enough plastic behind them to not create some holes ? It would help greatly if I could get rid of them before starting the resurfacing process with wet sandpaper - avoiding them during the process would be a pain...