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SKU:62684186
Cen-Tech Four-Way Trailer Light Tester by Cen-Tech Simply plug the tester into your tow vehicles and the LEDs light up to show the wiring is working correctly. There are three green Light Emitting Diodes (LEDs). The first LED nearest the insulated female connector is labeled TAIL in the molded plastic in raised letters. The second LED is labeled LT. and the third LED is labeled RT. Underneath the LT. & RT. is the word BRAKES. UPC = 792363665261
Fits Four-Way Flat Plugs
Small Size Fits Easily in Glove Compartment or Pocket
Male and Female Brass Connectors
Tests Right, Left, Tail and Brake Light Wiring
Dimensions: 1-13/16" Long X 1-1/4" Wide X 1/2" High
Nice gadget. No need to alligator clip your test light to a ground. I placed a weight on the brakes to check them. Faster than a simple continuity tester. Now I know the issue is in my trailer.