Logo
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

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

ADVERTISEMENT

Compare Buying Options

  • 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
    16.99
    Amazon.com

    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

    Delivery date & cost shown at checkout

  • 7 Way Blade & 4 Pin Trailer Light Circuit Tester With Led Indicators 6
    27.38
    eBay

    7 Way Blade & 4 Pin Trailer Light Circuit Tester With Led Indicators 6

    Delivery date & cost shown at checkout

  • Compact 7 Pin/4 Pin Trailer Harness Adapter With Led Indicators |
    28.99
    eBay

    Compact 7 Pin/4 Pin Trailer Harness Adapter With Led Indicators |

    Delivery date & cost shown at checkout

Product Details

[2-IN-1 DESIGN] Combines 4-way circuit tester and 7-way trailer light tester, suitable for most trucks.
[ADAPTER FUNCTIONALITY] Converts 7-pin output to 4-pin flat adapter, connecting 4-way trailer light plug.
[6 LIGHT FUNCTIONS] Testing, brake lights, reverse lights, turn signals, electric trailer brakes, and 12V auxiliary power.
[BRIGHT LED INDICATORS] Each function has a dedicated LED light for easy troubleshooting.
[QUICK AND EASY TESTING] Simplifies testing of trailer circuits for both 4-pin and 7-blade connectors. Fully covered by our free 30-day warranty, offered only by OPT7.

Best Review

Customers find the trailer adapter works well, with one mentioning it performed perfectly for 550 miles, and they appreciate its thick, sturdy rubber construction and secure connections with no loose or intermittent connections. Moreover, the adapter is easy to install and plug in, and one customer notes it's the best solution for standard four-pin trailer connections. However, customers disagree on the fit, with some reporting it doesn't align properly.AI Generated from the text of customer reviews

Popular Products

2-Pack 10FT USB Power Extension Cable for Wyze Cam,WyzeCam Pan,YI Home Camera,Nest-Cam Indoor,Oculus Go,Netvue,KasaCam,Furbo Dog,Blink,Flat USB to Micro USB Charging Charger Cord for Wyze-Cam v3 v2

2-Pack 10FT USB Power Extension Cable for Wyze Cam,WyzeCam Pan,YI Home Camera,Nest-Cam Indoor,Oculus Go,Netvue,KasaCam,Furbo Dog,Blink,Flat USB to Micro USB Charging Charger Cord for Wyze-Cam v3 v2

$8.99

Compare at 3 stores

HONGDAK Action Camera Accessories Kit for GoPro Hero 13 12 11 10 9 Black, Waterproof Housing+Silicone Case+ Adjustable Arm+Head Chest Wrist Strap+Bike Mount+Suction Cup+Floating Grip Bundle Set 63in1

HONGDAK Action Camera Accessories Kit for GoPro Hero 13 12 11 10 9 Black, Waterproof Housing+Silicone Case+ Adjustable Arm+Head Chest Wrist Strap+Bike Mount+Suction Cup+Floating Grip Bundle Set 63in1

$31.99

Compare at 3 stores

JJC E-Mount Body Cap & Rear Lens Cap Cover Kit for Sony A7 A7II A7III A7IV A7S II III A7R II III IV A7RV A7CR A7C II A6700 A6600 A6400 A6300 A6100 A6000 A1 II ZV-E10 II ZV-E1 & More Sony Camera & Lens

JJC E-Mount Body Cap & Rear Lens Cap Cover Kit for Sony A7 A7II A7III A7IV A7S II III A7R II III IV A7RV A7CR A7C II A6700 A6600 A6400 A6300 A6100 A6000 A1 II ZV-E10 II ZV-E1 & More Sony Camera & Lens

$5.99

Compare at 2 stores

Altura Photo 58MM Tulip Flower Lens Hood for Canon EOS 77D 80D 90D Rebel T8i T7 T7i T6i T6s T6 SL2 SL3 DSLR Cameras with Canon EF-S 18-55mm f/3.5-5.6 is Lens and Select Nikon Lenses

Altura Photo 58MM Tulip Flower Lens Hood for Canon EOS 77D 80D 90D Rebel T8i T7 T7i T6i T6s T6 SL2 SL3 DSLR Cameras with Canon EF-S 18-55mm f/3.5-5.6 is Lens and Select Nikon Lenses

$9.99

Compare at 4 stores

Micro USB Cable,2Pack Extra Long Android Charger Cable 10Ft 6Ft, EnduringFast Phone Charger Cord Android USB Charging Cable Fit for Samsung Galaxy S7 S6 S7 Edge S5,Note 5 4,LG G4,HTC,PS4,Camera,MP3

Micro USB Cable,2Pack Extra Long Android Charger Cable 10Ft 6Ft, EnduringFast Phone Charger Cord Android USB Charging Cable Fit for Samsung Galaxy S7 S6 S7 Edge S5,Note 5 4,LG G4,HTC,PS4,Camera,MP3

$6.99

Compare at 9 stores