I have a 2012 Sky and when I use the power window buttons at night it causes the headlights to dim momentarily. Other electronic functions causes similar results. It lasts for about 1 to 2 seconds. Very noticeable on high beams mode. Apparently a capacitor would need to be installed in line with the alternator so that any sudden surge of current would be taken from the capacitor and not the alternator. Looks like our alternator is underpowered. People installing powerful amplifiers on their audio system have similar effects.