Pre-trip/Post trip inspection tip. When checking your head lights, check both on low beam and then again on high beam. The low beam headlight has two elements, one for high beam, the other for low beam. Also, when checking your turn signals, do not use just your four-way flashers, even though it will tell you if your flashers/turn signal bulbs are functioning, it will not tell you if they are incorrectly wired and your signals could be crossed.