1.6M views · 10K reactions | Quick headlight aiming tutorial for your big rig. Park your rig on level ground with your headlights 25' from the wall. Look on your headlight lens for a dot or cross hatch. That's the aiming dot. Measure from the ground to your dot. Take that measument and mark it on the wall. Aim the headlights 3" lower than that mark. | BTS Lighting | Facebook