LED car lamp installation lamp bead direction

Generally, for the LED car lights that emit light on both sides, the direction of the lamp beads can be left and right, or up and down, and some are installed at a random angle. So, how should we install them, and the brightness and effect are the best?

We must pay attention to the LED car lights that emit light on both sides when installing them. The lamp beads of the car lights should face left and right, that is, horizontally and horizontally. The lamp body is vertically downward, and the lamp beads are one left and one right on both sides. Don't go up and down. If you put it up and down, you can see that the light is obviously not bright enough when the car lights hit the road, and you can only see it a few meters away.