AUTOXBERT 4 Pin Flat 7 Way Trailer Light Adapter Test Plug Brake Tail Turn Signal LED Indicator for Easy Testing, 7 pin Round RV Trailer Light Wiring Circuit Tester Wire Test Tool

Features 7way light tester Confirms proper vehicle and trailer electrical function Tests 7-way for tail, brake, reverse, turn signals, brakes and auxiliary power Features a label for each LED, indicating the intended function Constructed with LED lights for long-lasting use Rugged PVC plastic body is designed to be weather, corrosion and impact resistant The nickel-plated copper pins are well conductive, wear and tear resistant Even in the small details, this circuit tester stands out from the others. Compatible with standard 7-way blade trailer sockets Descriptions Part of towing responsibly is making sure your trailer lights are working properly. Whether you have just installed a new vehicle-to-trailer wiring harness or are trying to locate the cause of an electrical problem, 7-Way & 4 Pin tester is great for testing tail lights, turn signals, brake lights, ground connections and other electrical components on your trailer. Directly plugging it into a connector socket on vehicle, it'll respond to the various electrical signals when you push the brake pedal, signals a turn, turn on the running lights, etc. When the socket is getting proper power, the tester's LEDs will light up corresponding to each wire in the connector. Testing your vehicle-side socket is essential after installing a new custom vehicle-to-trailer wiring harness and is highly recommended every time you hitch up to tow. Also, if you are experiencing electrical problems with your trailer, tester will be able to tell you whether the problem is rooted in your vehicle's electrical system or if your trailer needs some rewiring. Function Codes BU: Back up or reverse circuit center pole RT: Right turn/brake TM: Taillights LT: Left turn/brake BK: Brake controller output 12V: 12-volt power feed ​​​​​ Package Included: 1 x 4pin Trailer Light tester 1 x 7way Trailer Light tester

• 4 Way Trailer Tester - Using this 4 pin trailer plug tester to confirm proper function of your vehicle’s trailer wiring harness, excellent for diagnosing trailer light issues, lets you know where in the system there is a problem instead of guessing. It also acts as a standard 4-Pin male&female trailer connector to connect standard 4-pin trailer wire.
• Plug & Play - This 4 pin trailer plug tester is easy to use, just plug the tester into the 4 pin flat trailer connector on your tow vehicle and trailer to test taillights and turn signals for proper operation.
• Bright LED Indicators - This 4-way trailer circuit tester features a LED light for each electrical functions, turn on the lights and check, you can easily read the LEDs and find out which wiring has a problem.
• Durable Construction - 4 pin trailer socket tester is made from durable ABS plastic, which will not rust or corrode. Tin-Plated copper terminals makes great conductivity.
• Compact Design - Small size trailer plug tester is convenient for storage, allows you store in your tool box, glove compartment or anywhere to be ready when you need it. Take this tester to be your assistant when needed wherever you go.