● EASY INSTALLATION & DISASSEMBLY: Experience lightning-fast plug-and-play magic! The NEWSUN 7-Way Trailer Plug Tester brings you effortless setup in a flash. No tools or batteries? No problem! Just plug it in and watch the LED indicators light up your way to seamless installation and removal.
● LONG-LASTING CONSTRUCTION: Built with a durable nylon body and high-conductive copper terminals, our tester resists water, high temperatures, wear, and corrosion. Ensuring a longer lifespan for your 7-way trailer plug tester.
● MULTIPURPOSE USE: Test 6 diverse trailer light functions with a single NEWSUN device. Check taillights, brake controller output, reverse circuit, turn signals, and 12-volt power feed. Guarantee all lights function correctly before hitting the road.
● WIDE ADAPTABILITY: The NEWSUN trailer plug tester is compatible with most common 7 way trailer plugs on SUVs, trucks, boats, campers, caravans, and other towed vehicles. Versatile for various towing needs.
● PRACTICAL DESIGN: Compact and easy to store. The small size of the NEWSUN tester makes it ideal for your glove compartment or tool box. Always available when needed without taking up excessive space.

 
 
Product description
 
 
 
 
 
 NEW SUN Heavy Duty 7 Way Trailer Light Circuit Connector Tester 
 
 When you're going to hitch a new trailer, it's necessary to make sure the lights are connected properly by the 7 way trailer light circuit tester connector. Made with durable ABS plastic and 6 LED lights for reliability. It works by plugging in the connector socket of your vehicle end and seeing the lights display when using the vehicles turn signals or your brakes. When the socket is getting proper power, the tester's various LEDs will light up corresponding to each wire in the connector. Don't worried again before you take off on your next trip with 7 way trailer tester light circuit connector! 
 
 
 
 
 
 
 
 Function Codes 
 
BU: back up or reverse circuit center pole
RT: right turn/brake
T/M: taillights
LT: left turn/brake
BK: Brake controller output
12V: 12-volt power feed
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Tests 7-way for tail, brake, reverse, turn signals, brakes and auxiliary power 
 
 Package List 
 
 
 
  (1x)7 Way blade trailer wiring tester  
 
  (1x)Wiring Diagram  
 
 
 
 
 
 
 7 Way Flat Pin Trailer Circuit Tester 
 
 Tests all functions of tow vehicle plug with LED light display 
 
 NEW SUN 7 way trailer electric tester is designed to help you quickly identify and fix problems in the wiring of the trailer. Features 6 LEDs display to show completed circuit for the running lights, left turn signal and right turn signal. 
 
 
 
 
  Compatible with standard 7-way blade trailer sockets  
 
  Designed to be weather, corrosion and impact resistant  
 
  Nickel-plated copper pins well improve conductivity and resistance against wear and corrosion