Found nice looking LED tail lights and was installing them, but noticed a little black box on the bottom.
Unscrewed the box and there's some circuit board inside with a bunch of resistors maybe?
Just wondering what it is and if it's replaceable, i.e. if I can buy this part separately.
So far tail light seem to work and turn signal as well, but it doesn't light up when I apply the break. Not sure if this is the reason.