NAPA 755-2437, 4-Wire Flat Insta-Plug Trailer End With Built In LED Circuit TesterCondition:* New Surplus Stock, In OEM Packaging. As Pictured.Additional Notes:* Easy-To-Install, Four-Wire Flat Replacement Connector* With Built In LED Circuit Tester* Trailer-Side Male End Replacement* Works With 6 To 12 Volt DC Systems* Easy To Use, No Slicing or Striping Needed* Insert Wires, Close Cover And Screw Down* Includes Dust CoverNAPA755-2437