Invincible Marine Trailer Light Circuit Tester, 4-Way In-Line by Invincible Marine

Description

Made using the highest quality components;Performance and quality tested;The most trusted name in marine accessories and equipment;Save time figuring out trailer light problems with this in-line trailer circuit tester;When current is present, the LED light will glow showing proper current present;Includes a water resistant design;Comes with a 1-year warranty