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Result: 4 wire flat extension

Hopkins 4-Pole Flat Wiring Extension - 120" Long

Retail: $19.55
Our Price: $16.48
In Stock
This 120" loop extends your current 4-way connector for more flexibility when towing. Ideal for connecting your towed vehicle to your RV.Features: Wiring harness extends your current 4-way connector for more flexibility when towing Perfect for running power from your RV to your towed vehicle or trailer Terminals resist corrosion
  • Extension Cord
  • Plugs into Vehicle Wiring
  • 4 Flat
  • Hopkins
  • Universal Fit

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
  • Wiring Extensions
  • 4 Flat
  • Hopkins
  • Splice-In
  • Universal Fit
  • No Converter

Hopkins Endurance Easy-Pull 4-Flat Extension w/ 2 Grip Rings - Vehicle and Trailer Ends - 48"

Retail: $30.30
Our Price: $17.25
In Stock
Increase the length of your 4-way flat connection by 48" with this extension loop. Large grip rings on both ends provide maximum leverage when disconnecting. Plugs into your existing 4-way flat ...
Features: 4-Way flat extension loop increases the length of your wiring connection by 48" Plugs into the 4-way flat connectors on your vehicle and trailer Easy-to-pull rings on trailer and
  • Wiring Extensions
  • 4 Flat
  • Hopkins
  • Universal Fit

Hopkins Endurance Easy-Pull 4-Flat Extension w/ 2 Grip Rings - Vehicle and Trailer Ends - 24"

Retail: $16.65
Our Price: $11.45
Increase the length of your 4-way flat connection by 24" with this extension loop. Large grip rings on both ends provide maximum leverage and grip when disconnecting. Plugs into your existing ...
Features: 4-Way flat extension loop increases the length of your wiring connection by 24" Plugs into the 4-way flat connectors on your vehicle and trailer Easy-to-pull rings on trailer and
  • Wiring Extensions
  • 4 Flat
  • Hopkins
  • Universal Fit

Hopkins Endurance Easy-Pull 4-Flat Extension w/ 1 Grip Ring - Vehicle and Trailer Ends - 12"

Retail: $25.39
Our Price: $10.59
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. Plugs into your existing 4 ...
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
  • Trailer and Vehicle End Connector
  • Trailer Connectors
  • 4 Flat
  • Hopkins

Roadmaster Extension Loop for Towed Vehicles - Dual 4-Way Flat Trailer Ends - 6' Long

Our Price: $35.31
In Stock
Extension wiring loop with 2 trailer ends lets you connect your RV and towed vehicle. Each male end easily plugs into a 4-way flat, vehicle-end plug.Features: Wiring loop lets you connect your RV to your towed vehicle Dual trailer (male) ends plug into 4-way flat vehicle ends 6' Long
  • Adapters
  • Extension Cord
  • Plugs into Vehicle Wiring
  • 4 Flat
  • Roadmaster
  • Universal Fit

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New Arrivals — From Our Shop to You!

Chosen by folks who live and breathe this, just like you.

Kristin
Kristin etrailer team member
Kristin etrailer team member

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Hopkins 2-Pole Flat Wiring Extension - 12" Long

Retail: $12.76
Our Price: $3.97
In Stock
This 12" loop has a 2-pole connector at each end for use with 12-volt accessories. The wires can be cut to provide 2 compatible replacement plugs or to create a plug-in connection for a ...
Features: 2-Pole, positive-negative wiring loop Cord can be cut to provide 2 compatible plugs Create a plug-in connection for a hardwired 12-volt accessory such as a backup camera Use as replacement
  • Wiring Extensions
  • 2 Pole
  • Hopkins
  • Universal Fit

Curt Universal Tail Light Wiring Kit for Towed Vehicles - 4-Way Flat Connectors

Retail: $132.95
Our Price: $79.39
In Stock
Get a head-start on wiring your towed car before you even get the installation started. This kit comes with butt connectors pre-installed and ready to splice into your wiring. Integrated block diodes ...
Includes 4-wire harness, 4-flat extension cable, mounting bracket, silicone sealant, zip-ties, and installation hardware 1-Year limited warranty Do I Need a Brake Light Relay? If the engine is off and your
  • Wiring Harness
  • Splices into Vehicle Wiring
  • 4 Flat
  • CURT
  • Universal Fit

Hopkins Multi-Tow Trailer Connector Adapter - 7-Way to 5-Wire Flat/4-Wire Flat and 12-V Power Socket

Our Price: $26.41
In Stock
Adapt the 7-way trailer socket on your vehicle to work with a 4-way or 5-way flat connector on the trailer. Adapter also provides a 12-volt power source outlet. Great for tailgating.Features: Versatile adapter and power socket Adapts from a 7-way RV blade trailer connector on the vehicle Provides a 5-wire flat, 4-wire flat and a 12-volt power socket Covers included to protect
  • Wiring Adapters
  • 7 Blade to 4 Flat
  • 7 Blade to 5 Flat
  • Hopkins
  • Universal Fit

Hopkins Endurance, Flex-Coil Trailer Connector Adapter - 7-Way to 5-Way or 4-Way Flat with Nite-Glow

Retail: $54.69
Our Price: $45.02
In Stock
This heavy-duty, coiled cable adapter is compatible with a 7-way RV blade trailer socket on the vehicle and adapts it to work with a 4-way flat or 5-way flat connector on the trailer.: 3' Cable when stretched 7-Way RV blade to 5-wire flat connector 18 Gauge wire: stop/tail/turn 16 Gauge wire: ground/reverse 3-Year limited warranty Note: Works with a 4-way flat connector plug on your
  • Wiring Adapters
  • 7 Blade to 4 Flat
  • 7 Blade to 5 Flat
  • Hopkins
  • Universal Fit

7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring - Vehicle End

Our Price: $81.39
In Stock
Tow a trailer with either a 7-way or 4-way plug with this dual vehicle-end connector. Included pigtail harness hardwires into your vehicle and the connector end mates with the 7-pole socket to form a ...
Features: Dual connector lets you hook up to a trailer with either a 7-pole, RV-style plug or a 4-way flat plug Pigtail harness hardwires into your vehicle and connects to 7-way socket Includes
  • Vehicle End Connector
  • Trailer Hitch Wiring
  • 4 Flat
  • 7 Blade
  • Hopkins
  • No Tow Package
  • No Converter

TorkLift Wiring Harness Extension for 36" SuperTruss or Cannon Hitch Extender - 7-Way RV

Our Price: $130.90
In Stock
Designed for use with your 36" long SuperTruss or Cannon receiver extension, one end of this no-splice wiring harness plugs into your truck's 7-way blade trailer connector. The other end ...
Features: Extends your truck's 7-way RV-style trailer connector back to clear your bed-mounted camper One end of wiring harness plugs into your existing 7-way Other end of harness has 7-way port
  • Wiring Extensions
  • 7 Blade
  • TorkLift
  • Universal Fit

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

Our Price: $15.25
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
  • Trailer and Vehicle End Connector
  • Trailer Connectors
  • 4 Flat
  • TowSmart

Hopkins Heavy-Duty Trailer Coiled Wire Adapter for 7-Way to 4-Wire Flat

Retail: $49.22
Our Price: $37.54
In Stock
This heavy-duty, coiled cable adapter is compatible with a 7-way RV blade trailer socket on the vehicle and adapts it to work with a 4-wire flat connector on the trailer.Features: Heavy-duty, coiled cable Weatherproof jacketing Easy-grip connectors Tin-plated terminals for corrosion resistance Specs: 3' Cable when stretched 7-Way RV blade to 4-wire flat Flex Coil
  • Wiring Adapters
  • 7 Blade to 4 Flat
  • Hopkins
  • Universal Fit

TowSmart Trailer Connector Adapter w/ LED Illuminator - 7-Wire to 4-Wire Flat

Our Price: $14.85
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, snap it into place, and the lights fire up. Quick fix, solid connection, and you're back on schedule. Confirmation This adapter converts your vehicle's 7-way blade socket to a 4-way flat plug, allowing you to tow trailers with different wiring configurations. The built-in LED illuminator lights up when the
  • Wiring Adapters
  • 7 Blade to 4 Flat
  • TowSmart
  • Universal Fit

Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness w/ 7-Pole and 4-Pole Connector

Our Price: $115.70
In Stock
... connection. Connector also provides a 4-way flat socket. bumper into your truck bed Enhanced weatherproofing with internal seals, corrosion-resistant terminals and rubber-coated copper wiring Socket provides 7-way and 4-way connectors Socket made of durable ABS
  • Vehicle End Connector
  • 5th Wheel and Gooseneck Wiring
  • 7 Blade
  • Hopkins
  • Plug-In
  • No Tow Package

Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 4-Way and 7-Pole Connector - 7' Long

Retail: $137.95
Our Price: $86.92
In Stock
Mount this 4-way and 7-way, RV-style connector in your truck bed for quick, simple hookup of your 5th-wheel or gooseneck trailer. Custom harness plugs in-line with your existing factory wiring so ...
Features: Provides 4-way and 7-way, blade-style connector in your truck bed for hassle-free hookup of 5th-wheel and gooseneck trailers Connector mounts in truck-bed sidewall, tailgate post or wheel
  • Vehicle End Connector
  • 5th Wheel and Gooseneck Wiring
  • 7 Blade
  • CURT
  • Plug-In
  • Hidden

Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 4-Way Flat Connectors

Retail: $129.78
Our Price: $92.93
In Stock
This wiring kit carries your RV's brake and turn signals to your towed car's tail lights. Diodes prevent damage from electrical feedback. Connects RV and towed car with 4-pole flat plugs ...
) 4-Wire harnesses with 4-pole flat connectors Butt connectors, 1 ring terminal, zip ties, and plastic loom Specs: Max amperage: 85 amps Max voltage: 24 volts Power cord: 6' long 4-Wire harness: 30'
  • Diode Kit
  • Splices into Vehicle Wiring
  • 4 Flat
  • Roadmaster
  • Universal Fit

Hopkins 4-Diode Universal Wiring Kit for Towed Vehicles - 4-Way Flat Connector

Our Price: $40.83
In Stock
Tail light wiring kit carries brake and turn signals from your motorhome to your towed car while protecting against electrical feedback. Includes a 4-pole flat wiring harness.-way flat trailer connector Specs: Max amperage per diode: 3 amps Max voltage: 24 volts Wire lead: 35' long White ground: 42" long Wire configuration: Brown: Left and right side running lights Green
  • Diode Kit
  • Splices into Vehicle Wiring
  • 4 Flat
  • Hopkins
  • Universal Fit

Demco 4-Diode Universal Tail Light Wiring Kit for Towed Vehicles - 4-Way Flat Connector

Retail: $127.00
Our Price: $102.29
In Stock
This wiring kit carries brake and turn signals from your motorhome to your towed car while you're flat towing. Diodes protect your car from damage from electrical feedback. Includes a 4-way flat ...
elements with heat-sealed casing Includes: 4 Diodes 4-Wire harness with 4-way flat connectors 12 Spade connectors 4 Quick-splice wire connectors 6 Zip ties 1 Ring terminal Made in the USA Specs: Wiring
  • Diode Kit
  • Splices into Vehicle Wiring
  • 4 Flat
  • Demco
  • Universal Fit

Roadmaster Universal Hy-Power Diode Wiring Kit

Retail: $164.41
Our Price: $98.67
In Stock
... . Connectors and Extension loop sold separately. Includes 4 Hy-Power diodes; 30' long, 4-wire harness; wire connectors; cable ties; 1 ring terminal; and 3' long plastic loom Extension loop for connecting towed car to RV is sold separately Brake
  • Diode Kit
  • Splices into Vehicle Wiring
  • Roadmaster
  • Universal Fit

Hopkins Custom Tail Light Wiring Kit for Towed Vehicles

Retail: $102.09
Our Price: $93.02
In Stock
Wire your vehicle and get the signal lights required for flat towing without having to splice into your wiring with this custom, plug-in harness. Integrated diodes prevent feedback from RV for safe ...
Features: Lets you wire your vehicle to accept your RV's tail, brake, and turn signal lights for flat towing Provides 4-way flat plug at front of towed car to connect to motor home Plugs in
  • Wiring Harness
  • Plugs into Vehicle Wiring
  • 4 Flat
  • Hopkins
  • Custom Fit

Blue Ox Hitch Extender for Tow Bars - 2" Hitches - 6-3/4" or 8-3/4" Extension

Retail: $165.00
Our Price: $136.32
Designed for use with tow bars, this hitch extender moves your 2" receiver opening either 6-3/4" or 8-3/4" out from your trailer hitch to provide clearance for rear-mounted accessories ...
included Specs: Application: 2" x 2" trailer hitch receivers Extension lengths: 6-3/4" From center of pin hole to center of first hitch pin hole 8-3/4" From center of pin hole to center
  • Hitch Extender
  • Tow Bar
  • Hitch Extension
  • Blue Ox
  • 8-3/4 Inch Extension
  • 6 Inch Extension

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Retail: $115.95
Our Price: $68.51
In Stock
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system and ...
Features: Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately) Connects
  • Vehicle End Connector
  • Trailer Hitch Wiring
  • 4 Flat
  • CURT
  • Plug-In
  • No Tow Package
  • Powered Converter
  • Hidden