One of the most common reasons for an officer to pull a driver over is for a faulty light. Below are some basic guidelines on how to troubleshoot some of the problems that may arise with a trailer ...

This is the primary cause of trailer-light problems. Symptoms include flickering, fast-blinking, dimness, intermittent operation (often when a trailer ball is used for a ground), and complete failure.

According to Phillips Industries, the December edition of its monthly Qwik Tech Tips newsletter outlines “in clear language” how best to troubleshoot trailer lights when they are not working properly.