OPT7 7 Pin & 4 Pin Circuit Tester Adapter w/ 6 LED Indicators, 7 Way Blade to 4 Way Flat Trailer Connector w/Secure Tab for Pickup Truck Trailer Tow Hitch, 5.3" Long x 2.36" Diameter

★★★★★ 4.3 132 reviews

US$7.20
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US$7.20
Price when purchased online
Free shipping Free 30-day returns

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Product details

Management number 217662119 Release Date 2026/04/19 List Price US$7.20 Model Number 217662119
Category
  • [IMPORTANT NOTE] ⚠️Tester may appear upside down on some 2017+ Newer F150/Chevy/GMC models. Not compatible with LED lighting systems or vehicles with lamp-out sensors, such as BMW, VW, Audi, Mercedes-Benz, Porsche etc.
  • [QUICK AND EASY TESTING] Simplifies testing of trailer circuits for 7-Pin and 4-Pin connectors. Tests brake lights, reverse lights, turn signals, electric trailer brakes, and 12V auxiliary power.
  • [6 LIGHT FUNCTIONS] Each function has a dedicated LED indicator for easy troubleshooting. Labels: LT= Left Turn/Stop, RT= Right Turn/Stop, TM= Tail Lights, BK= Electric Brakes, BU= Backup/Reverse, 12V= Auxiliary Power.
  • [2-IN-1 DESIGN] Combines a 4-way circuit tester and 7-way trailer light tester, while also converting 7-pin output for connecting 4-way trailer plugs, suitable for most trucks.
  • [WARRANTY] Fully covered by our free 30-day warranty, offered only by OPT7.

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4.3 out of 5
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132 ratings | 54 reviews
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