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.

With fishing seasons nearing, now is the time to give some thought to the most common problems related to boat trailers: lights and wheel bearings. LIGHTS: The most common headache with boat trailers ...

If there is one thing that causes more problems on a boat, motor and trailer, it has to be the trailer lights. How many times have you gone out fishing or boating and find out the trailer lights are ...