Lite-Check LLC is offering the new Detector 902 test instrument for trailer lights and air brake systems. The instrument is simple to operate using either the front panel switches or the full-function ...

PITTSBURGH, April 17, 2025 /PRNewswire/ -- "I'm a mechanic and was frustrated with the inability to check trailer light circuits without a semi-truck connection," said an inventor, from Spartanburg, S ...

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.