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TowSmart Plug-In Trailer Connector Adapter w/ Wire Tester - 4-Way Flat to 7-Blade

Our Price: $14.87
In Stock
You're lining up the trailer in the driveway when you realize the plug doesn't match. No time to rewire. You grab the adapter, plug it in, and the lights fire up. Quick fix, solid connection ...
Highlights 4-Way to 7-Blade Conversion: Adapts your vehicles 4-way flat to a 7-blade trailer connector. Plug-In Ready: No cutting or splicing needed. Built-In Wire Tester: Confirms function before
  • 4 Flat to 7 Blade
  • Universal Fit
  • Wiring Adapters
  • TowSmart

TowSmart ProClass Plug-In Trailer Connector Adapter w Wire Tester, Ergo Grip - 4-Way Flat to 7-Blade

Retail: $27.99
Our Price: $22.04
In Stock
You've got a 4-flat on the vehicle and a 7-way on the trailer. No time to rewire. You grab this adapter, plug it in, and the built-in lights confirm the signals are live. Now you just need to ...
converts your 4-flat vehicle wiring to fit a 7-way trailer plug. It's a plug-and-play solution for light-duty towing. The built-in LED tester confirms that brake lights, taillights, and turn signals are
  • 4 Flat to 7 Blade
  • Universal Fit
  • Wiring Adapters
  • TowSmart

TowSmart 4-Way Flat Trailer Connector w/ Wire Tester - Trailer End - 24"

Retail: $10.99
Our Price: $9.73
In Stock
The trailer lights are flickering again. You've replaced bulbs, checked grounds, and still no luck. Time to swap the plug. This 4-way flat connector comes with a built-in tester and 24 inches of ...
Highlights 4-Way Flat Plug: Standard trailer-end connector. 24" Bonded Wire Lead: 18-gauge wire for stop, turn, and taillights. Built-In Wire Tester: Lets you verify light function during
  • 4 Flat
  • Trailer Connectors
  • Trailer End Connector
  • TowSmart

TowSmart ProClass 7-Blade Trailer Connector w/ Wire Tester - Trailer End

Retail: $36.99
Our Price: $27.17
You're wiring up a trailer and need to know it's done right. This 7-way plug lights up to show which signals are live the second you connect. You crimp it, test it, and roll out knowing ...
Highlights 7-Blade Connector: Standard trailer-end plug for lights, brakes, and power. Built-In LED Tester: Confirms active signals during hookup. Screw Terminals: Accepts blunt-cut wires for easy
  • 7 Blade
  • Trailer Connectors
  • Trailer End Connector
  • TowSmart

Hopkins Endurance Easy-Pull Harness with 4-Pole Flat Connector - LED Tester - Trailer End - 12"

Retail: $23.96
Our Price: $9.26
In Stock
Easily disconnect this 4-way flat trailer-end plug from your vehicle without damaging the terminals. Large grip ring provides maximum leverage when disconnecting. Built-in LED lights illuminate to ...
Features: 4-Way flat trailer-end connector plugs into the 4-way flat on your vehicle Easy-to-pull ring makes 4-way easy to disconnect Ring handle makes it easy to pull connector straight back for
  • 4 Flat
  • Trailer Connectors
  • Trailer End Connector
  • Hopkins

Hopkins Endurance Easy-Pull 4-Pole Flat Extension - Vehicle and Trailer Ends - LED Tester - 12"

Retail: $23.67
Our Price: $11.31
In Stock
Increase the length of your 4-way flat connection by 12" with this extension loop. Large grip ring on trailer end provides maximum leverage when disconnecting. Built-in LED lights illuminate to ...
Features: 4-Way flat extension loop increases the length of your wiring connection by 12" Plugs into the 4-way flat connectors on your vehicle and trailer Easy-to-pull ring on trailer end makes
  • 4 Flat
  • Universal Fit
  • Wiring Extensions
  • Splice-In
  • Hopkins
  • No Converter

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TowSmart Circuit Tester Kit for 4-Pole Flat Trailer Connector

Our Price: $12.95
In Stock
You're chasing a light issue with no clue if it's the truck or trailer. You plug in the tester, hit the blinkers, and the LEDs show what's live. No guesswork. Just answers before you ...
Trailer Wiring This compact plug-in tester helps you verify that your tow vehicles 4-way flat connector is working correctly. Plug it in, activate the lights in the cab, and the built-in LEDs will light up
  • Testers
  • Circuit Tester
  • Tow Function Tester
  • TowSmart

Hopkins Endurance Flex Trailer Connector Adapter w/ LED Circuit Tester - 7-Pole to 4-Pole or 5-Pole

Retail: $43.40
Our Price: $22.94
In Stock
This adapter lets you use your 7-way, RV-style connector with a 4- or 5-way flat, trailer-end plug. It includes a circuit tester with red LEDs, and the 5" long, flexible wire between the plugs ...
Features: Adapter converts your 7-pole, blade-style, vehicle-end connector to a 4- or 5-wire flat connector Integrated circuit tester with red LEDs lets you know when wiring is functioning properly
  • 7 Blade to 4 Flat
  • 7 Blade to 5 Flat
  • Universal Fit
  • Wiring Adapters
  • Hopkins

Hopkins Endurance Flex Trailer Connector Adapter w/ LED Circuit Tester - 6-Pole to 4-Pole

Retail: $37.24
Our Price: $21.39
In Stock
This adapter lets you use your 6-way round connector with a 4-way flat, trailer-end plug. It includes a circuit tester with red LEDs, and the 5" long, flexible wire between the plugs makes for ...
Features: Adapter converts your 6-pole round, vehicle-end connector to a 4-wire flat connector Integrated circuit tester with red LEDs lets you know when wiring is functioning properly Flexible wire
  • 6 Round to 4 Flat
  • Universal Fit
  • Wiring Adapters
  • Hopkins

Hopkins Smart Light Trailer Tail Light w Testers - 7 Function - Submersible - Passenger's Side

Our Price: $21.85
In Stock
4-1/2" x 5-3/8" Square trailer tail light is submersible. Integrated LEDs indicate if there's a fault in your trailer wiring. For trailers more than 80" wide. Includes ...
replaceable Light accepts industry-standard 3-prong plug PL-3 pigtail harness included for trailers that don't have existing plug Surface mount with included studs Designed for trailers more than 80"
  • Submersible Lights
  • Surface Mount
  • Tail Lights
  • Side Marker
  • License Plate
  • Rear Reflector
  • Turn
  • Tail
  • Stop
  • Side Reflector
  • 4-1/2L x 5-3/8W Inch
  • Hopkins
  • Square
  • Red

Hopkins Smart Light Trailer Tail Light w Testers - 6 Function - Submersible - Passenger's Side

Our Price: $20.54
4-1/2" x 5-3/8" Square trailer tail light is submersible. Integrated LEDs indicate if there's a fault in your trailer wiring. For trailers less than 80" wide. Includes ...
accepts industry-standard 3-prong plug PL-3 pigtail harness included for trailers that don't have existing plug Surface mount with included studs Designed for trailers less than 80" wide DOT and
  • Submersible Lights
  • Surface Mount
  • Tail Lights
  • Stop
  • Side Reflector
  • Rear Reflector
  • Turn
  • Side Marker
  • Tail
  • 4-1/2L x 5-3/8W Inch
  • Hopkins
  • Square
  • Red

TowSmart ProClass 7-Blade Trailer Connector w/ Jacketed Cable, Wire Tester - 72" Long

Retail: $59.99
Our Price: $52.39
In Stock
You're rewiring a trailer from scratch or cleaning up a mess of splices. This 7-way gives you a fresh cable, sealed jacket, and built-in test lights. You wire it once, plug it in, and know its ...
Highlights 7-Blade Connector: Standard plug for trailer lights, brakes, and 12V power. LED Tester Built In: Lights confirm signal function during hookup. Jacketed Cable: Sealed 72" wiring
  • 7 Blade
  • Trailer Connectors
  • Trailer End Connector
  • TowSmart

Brophy Circuit Tester for 4-Pole Flat Trailer Connector

Our Price: $15.70
In Stock
Circuit tester plugs into your 4-way flat trailer wiring harness and identifies lighting problems. Labeled LED lights illuminate to show which functions are working properly.Features: Circuit tester plugs into your trailer's wiring harness to check the conductivity of all the circuits between your vehicle and your trailer Quickly identifies lighting problems Labeled
  • Testers
  • Circuit Tester
  • Tow Function Tester
  • Brophy
  • Black

Reese Trailer Connector Adapter w/ LED Circuit Tester and Dust Cover - 7-Pole to 4-Pole or 5-Pole

Retail: $31.30
Our Price: $21.52
In Stock
This adapter lets you quickly convert your 7-way connector for use with a 4-way or 5-way flat trailer-end plug. It includes a circuit tester with red LEDs and a built-in dust cover that protects the ...
Features: Easy-to-use, plastic adapter converts your vehicle's 7-blade, RV-style, vehicle-end connector for use with a 4-wire or 5-wire flat, trailer-end connector Circuit tester with highly
  • 7 Blade to 4 Flat
  • 7 Blade to 5 Flat
  • Universal Fit
  • Wiring Adapters
  • Reese

TowSmart Harness with 4-Pole Flat Connector - Wire Tester, Ergo Grip - Trailer End - 12"

Our Price: $15.11
In Stock
You're hooking up the trailer and the lights are dead. Could be the truck, could be the plug. This harness tells you fast. Built-in LEDs show what's live, and the grip makes it easy to ...
Highlights 4-Way Flat Connector: Standard trailer-end wiring harness. Built-In LED Tester: Confirms active signals during hookup. Ergo Grip Handle: Makes connecting and disconnecting easier
  • 4 Flat
  • Trailer Connectors
  • Trailer End Connector
  • TowSmart

7 Way Trailer Connector Vehicle Tester

Retail: $23.73
Our Price: $19.76
A circuit tester that plugs into the 7-way trailer connector on the vehicle and emulates a trailer. The lights let you know what functions (brake, turn, tail, stop, reverse and 12V) are working ...
Features: 7-way circuit tester 12V power Function Codes: BU: back up or reverse circuit center pole RT: right turn/brake TM: taillights LT: left turn/brake BK: Brake controller output 12V: 12-volt
  • Testers
  • Tow Function Tester
  • Tow Ready
  • Black

Adapter 7 Pole to 4 Pole with Tester and Cover

Retail: $18.96
Our Price: $10.60
In Stock
If your truck has the connector on the left, and your trailer has the connector on the right, you will want this adapter. Vehicle End Trailer End Similar to 18142 and 30702
  • 7 Blade to 4 Flat
  • Universal Fit
  • Wiring Adapters
  • Hopkins

Hopkins Endurance Easy-Pull 4-Way Flat Connector w/ 48" Harness and LED Tester

Retail: $20.43
Our Price: $10.67
In Stock
Built-in LEDs on this 4-way flat connector help you troubleshoot problems. The large grip ring provides the leverage you need to easily disconnect it from your trailer connector without damaging the ...
connector is receiving power from your tow vehicle. Just plug the connector into the 4-way flat on your trailer. No separate circuit testers are needed. Activate each function on your vehicle and a red light
  • 4 Flat
  • Universal Fit
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • Splice-In
  • Hopkins
  • No Converter

Hopkins Adapter 7-Pole to 6-Pole Universal with LED Tester - Electric Brake Center Pin

Retail: $34.73
Our Price: $21.13
In Stock
Adapter converts your 7-pole plug on the vehicle to a 6-pole plug to fit your trailer's connector.Features: Adapter converts your 7-pole plug on the vehicle to a 6-pole plug to fit your trailer's connector Function-testing LEDs provide built-in troubleshooting Center pin is set-up as electric
  • 7 Round to 6 Round
  • Universal Fit
  • Wiring Adapters
  • Hopkins

Adapter 7-Pole to 6-Pole Universal with LED Tester

Retail: $34.85
Our Price: $19.17
In Stock
Adapter converts your 7-pole plug on the vehicle down to 6-pole plug to fit your trailer's connector. Note: Center pin is set-up as the hot lead but can easily be changed to work with trailers
  • 7 Blade to 6 Round
  • Universal Fit
  • Wiring Adapters
  • Hopkins

TowSmart 4-Pole Loop w/ Wire Tester - 12" Long

Our Price: $15.14
In Stock
You're sorting out a trailer light issue and don't want to rip everything apart. This loop lets you test wiring fast. Plug it in, check the LEDs, and see what's working. Saves time and ...
Highlights 4-Way Flat Loop: Connects trailer and vehicle wiring or serves as a test lead. Built-In LED Tester: Lights indicate active circuits when plugged into vehicle. 12" Length: Short
  • 4 Flat
  • Trailer Connectors
  • Trailer and Vehicle End Connector
  • TowSmart

Adapter 6-Pole to 4-Pole with Built-In LED Tester and Cover

Retail: $18.28
Our Price: $10.92
In Stock
Converts from 6-pole round adapter on your vehicle down to 4-pole flat adapter. Also included, circuit tester and plug cover.Features: Converts from 6-pole round adapter on your vehicle down to 4-pole flat adapter Includes tester and cover If your truck has the connector on the left, and your trailer has the connector on
  • 6 Round to 4 Flat
  • Universal Fit
  • Wiring Adapters
  • Hopkins

Curt LED 5-Way Flat Circuit Tester - Vehicle End

Retail: $12.95
Our Price: $11.51
In Stock
This circuit tester plugs into the 5-way trailer connector on your vehicle. The bright LED lights indicate which functions (tail lights, brake lights, turn signals, and reverse lights) are working ...
Features: 5-Way connector tester plugs into your vehicle's wiring harness to confirm your lights are functioning Tests tail lights, brake lights, turn signals, and reverse lights Labeled LED
  • Testers
  • Circuit Tester
  • Tow Function Tester
  • CURT

Brophy 4- and 5- Way Flat Circuit Tester

Retail: $23.58
Our Price: $22.22
In Stock
This Brophy electrical tester works for both 4- and 5- way flat trailer wiring harnesses.Features: Plugs into your trailer's wiring harness to check the conductivity of all the circuits between your vehicle and your trailer Quickly identifies lighting problems Can be left attached to
  • Testers
  • Circuit Tester
  • Tow Function Tester
  • Brophy
  • Black