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 and female trailer connector to connect standard 4-pin trailer wire
Plug and 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 never rust or corrode; Tin-Plated copper terminals makes great conductivity; Female end tester comes with a rubber dust cover to protect the terminals when not in use
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
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Oyviny Custom 4 Pin Trailer Wiring Harness for Select 2009-2024 Subaru Ascent/Crosstrek/Forester/Outback Factory Tow Package Required for Installation, Vehicle-Side 4 Way Trailer Wire
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