bing tracking image

Search: 4 flat   >  

TowSmart 4-Way Flat to 4-Way Flat Trailer Wiring Harness Extension Kit - 18" Long

Our Price: $7.24
In Stock
Do you wish it was longer? Give your current 4-way flat connector a little more length with this 18" extension harness so you can hook up to those trailer connections that are too far for the 4-flat on your vehicle.Features: Trailer wiring extension harness extends your current 4-way connector Adds 18" of length to your vehicle's 4-way flat to reach further, giving you more flexibility to connect where you need Includes vehicle end and trailer end connection plugs Corrosion-resistant terminals ensure durability 1-Year limited warranty
  • Wiring Extensions
  • Trailer End Connector
  • 4 Flat
  • TowSmart

TowSmart 7-Way RV Style to 4-Flat or 5-Way Flat Trailer Connector Adapter

Retail: $26.99
Our Price: $22.51
In Stock
You're ready to hit the road, but your trailer's 4-pole or 5-way flat plug doesn't match your vehicle's 7-way blade socket. Instead of rewiring, simply plug in this adapter and get moving.Highlights Plug-and-play adapter: Connects 7-way RV blade socket to 4-flat or 5-flat trailer wiring. No rewiring needed: Just plug in and towno cutting or splicing required. Dual trailer compatibility: Works with both 4-pole and 5-pole flat trailer plugs.
  • Wiring Adapters
  • 4 Flat
  • 5 Flat
  • Plug-In
  • TowSmart
  • Universal Fit

Curt Trailer Connector Adapter - 4-Way Flat to 5-Way Flat - Vehicle End

Our Price: $17.61
In Stock
Convert your vehicle's 4-way flat trailer connector to a 5-way flat. Plug the 4-pole connector into your vehicle and connect the wire leads to get the electric brake function.Features: Adapter converts your 4-way flat trailer connector to a 5-way flat trailer connector Additional wire leads for reverse lights Durable molded plastic construction resists corrosion Simple installation Wiring harness plugs into existing 4-way flat connector and hardwires to existing wiring Specs: Wire configuration: Green: right turn signal and brakes Yellow: left turn signal and brakes Brown: tail lights Blue wire: reverse lights White wire: ground wire 1-Year limited warranty
  • Wiring Adapters
  • 4 Flat to 5 Flat
  • CURT
  • Universal Fit

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

Retail: $159.37
Our Price: $86.90
In Stock
... Diodes prevent damage from electrical feedback. Connects RV and towed car with 4-pole flat plugs. Includes installation hardware.Features: Carries your RV's tail, brake, and turn signals to your towed car Prevents feedback that can damage your vehicle's electrical components with diodes Includes: 4 Hy-Power diodes (2) 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' long Plastic loom: 3' long Notes: A brake light relay (RM-88400 - sold separately) may be required if used with a flat tow brake system.
  • Splices into Vehicle Wiring
  • Diode Kit
  • 4 Flat
  • Roadmaster
  • Universal Fit

Curt Trailer Connector Adapter - 4-Way to 7-Way RV and 4-Way Flat

Retail: $58.95
Our Price: $35.94
In Stock
This multi-function, vehicle-end connector converts any 4-way flat, vehicle-end plug to a combination 7-way outlet and 4-pole flat outlet.Features: Adapts 4-way flat to both 7-way RV and 4-way flat 4-Way flat output connects tail lights, brake lights, and turn signals 7-Way connects tail, brake, reverse, turn signals, and auxiliary power Dust covers keep connectors clean when not in use Split loom keeps wires contained and well protected Simple installation Wiring harness plugs into existing 4-way flat connector and hardwires to existing wiring to get additional functions needed for 7-way Included hardware and metal mounting bracket secures wiring to the vehicle or trailer hitch 1-Year limited warranty Specs: Distance between bracket mounting holes center to center: 2-1/4" Harness length: 17" Yellow wire is for reverse lights Blue wire is for brakes Black wire is for 12 volt power White wire is ground
  • Wiring Adapters
  • 4 Flat to 4 Flat
  • 4 Flat to 7 Blade
  • CURT
  • Universal Fit

Buyers Products Trailer Connector Adapter - 4-Way to 7-Way RV and 4-Way Flat

Retail: $34.74
Our Price: $21.42
In Stock
This multi-function, vehicle-end connector converts any 4-way flat, vehicle-end plug to a combination 7-way outlet and 4-pole flat outlet.Features: Adapts 4-way flat to both 7-way RV and 4-way flat 4-Way flat output connects tail lights, brake lights, and turn signals 7-Way connects tail, brake, reverse, turn signals, and auxiliary power Dust covers are dirt and weather-resistant Split loom keeps wires contained and protected from the elements Simple installation Wiring harness plugs into existing 4-way flat connector and hardwires to existing wiring to get additional functions needed for 7-way Included hardware and metal mounting bracket secures wiring to the vehicle or trailer hitch 1-Year warranty Specs: Distance between bracket mounting holes center to center: 2-1/4" Harness length: 10" Yellow wire is for reverse lights Blue wire is for brakes Black wire is for 12 volt power White wire is ground
  • Wiring Adapters
  • 4 Flat to 4 Flat
  • 4 Flat to 7 Blade
  • Buyers Products
  • Universal Fit

Curt Trailer Connector Adapter with Backup Alarm - 4-Way to 7-Way RV and 4-Way Flat

Retail: $68.99
Our Price: $41.44
In Stock
This multi-function, vehicle-end connector converts any 4-way flat, vehicle-end plug to a combination 7-way outlet and 4-pole flat outlet. Features an integrated backup alarm.Features: Connects to 4-way flat plug on your vehicle Requires additional wiring for use of brake, power and accessory leads Supplies 7-blade RV and 4-wire flat trailer connections Sounds alarm when vehicle is in reverse Constructed of durable plastic Specs: Yellow wire is for reverse lights Blue wire is for brakes Black wire is for 12 volt power White wire is ground 4-Way connector plugs into vehicle 4-way connector
  • Wiring Adapters
  • 4 Flat to 4 Flat
  • 4 Flat to 7 Blade
  • CURT
  • Universal Fit

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

Our Price: $107.99
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 connector for plugging into your RV.Features: Carries turn and brake signals from RV to towed vehicle while flat towing Prevents feedback that can damage your vehicle's electrical components with diodes Protects diodes from the 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 harness length: 26' Wire gauge: 16 Max voltage: 24 volts 1-Year warranty Note: This kit wires your towed car as a combined lighting system, meaning that the brake and turn signals travel along the same wire.
  • Splices into Vehicle Wiring
  • Diode Kit
  • 4 Flat
  • Demco
  • Universal Fit

TowSmart ProClass Trailer Connector - 4-Way to 7-Way and 4-Way Flat - Vehicle End

Our Price: $31.20
In Stock
... It gives you both 4-flat and 7-way outputs, ready for whatever pulls into the driveway.Highlights Dual Trailer Outputs: 7-way blade and 4-flat connectors in one housing. 4-Way Input: Converts standard vehicle 4-flat wiring to work with multiple trailer types. Built-In Cover: Keeps the 7-way socket clean when not in use.
  • Wiring Adapters
  • 4 Flat to 4 Flat
  • 4 Flat to 7 Blade
  • TowSmart
  • Universal Fit

Adapter 4 Round to 4 Flat

Our Price: $15.79
In Stock
Adapts from a 4 round plug on your vehicle to a flat 4-Pole on your trailer. Replaces # 17006 and 13173
  • Wiring Adapters
  • 4 Round to 4 Flat
  • Hopkins
  • Universal Fit

Custer Trailer Connector Adapter - 4-Way Round to 4-Way Flat

Our Price: $18.65
In Stock
This adapter converts a 4-way round connector to a 4-way flat connector. The durable ABS plastic adapter is compact, and pull grips on the flat end make it easy to install and remove.Features: Adapter converts a 4-way round trailer connector to a 4-way flat connector Pull grips on flat end make plug easy to install and remove ABS plastic construction is strong and durable Approximate length: 4"
  • Wiring Adapters
  • 4 Round to 4 Flat
  • Custer
  • Universal Fit

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

Retail: $167.95
Our Price: $111.08
In Stock
Easily add a 4-way trailer connector with this custom-fit harness. The T-connector plugs into existing wiring - no cutting needed. Powered converter protects vehicle circuits and ensures consistent trailer lighting for safe towing in any conditions.Reliable Trailer Lighting for Every Trip: Powers Brake, Turn, and Running Lights A well-lit trailer is a safe trailer. This 4-way wiring harness keeps your trailer's brake lights, turn signals, and running lights powered and in sync with your vehicle. Whether you're hauling a boat to the lake or a camper to the mountains, your lights stay bright and visible.
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • 4 Flat
  • Plug-In
  • CURT
  • Powered Converter
  • No Tow Package

Pollak Trailer Wiring Adapter - 7-Way RV to 4-Way Flat

Our Price: $26.78
In Stock
Connect your trailer with a 4-way flat plug to a vehicle with a 7-way RV socket using this simple plug-in adapter.Highlights 7-Way RV to 4-Way Flat: Adapts a vehicle-side 7-way RV socket to work with a trailer-side 4-way flat plug. Flexible Wire Lead: Adds reach and reduces strain at connection point.
  • Wiring Adapters
  • 7 Blade to 4 Flat
  • Pollak

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

Our Price: $124.64
In Stock
Easily add a 4-way trailer connector with this custom-fit harness. The T-connector plugs into existing wiring - no cutting needed. Powered converter protects vehicle circuits and ensures consistent trailer lighting for safe towing in any conditions.Reliable Trailer Lighting for Every Trip: Powers Brake, Turn, and Running Lights A well-lit trailer is a safe trailer. This 4-way wiring harness keeps your trailer's brake lights, turn signals, and running lights powered and in sync with your vehicle. Whether you're hauling a boat to the lake or a camper to the mountains, your lights stay bright and visible.
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • 4 Flat
  • Plug-In
  • CURT
  • Powered Converter
  • No Tow Package

RV Designer RV Socket Adapter Harness - 4 Way Flat to 7 Way RV

Our Price: $37.97
In Stock
Convert your vehicle's 4-way flat connection to a 7-way RV socket with this adapter harness. It supports lighting, trailer brakes, reverse lights, and auxiliary power, all in a compact 12" harness.Features: 4-Way flat to 7-way RV socket adapter harness designed for trailer wiring connections Supports taillights, brake lights, reverse lights, turn signals, trailer brakes, and auxiliary power 12" Harness length for convenient installation Spring-loaded dust cover helps protect connector from dust and corrosion Designed for reliable trailer electrical connections
  • Wiring Adapters
  • Trailer End Connector
  • 4 Flat to 7 Blade
  • Plug and Lead
  • RV Designer

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

Retail: $166.95
Our Price: $118.14
In Stock
Easily add a 4-way trailer connector with this custom-fit harness. The T-connector plugs into existing wiring - no cutting needed. Powered converter protects vehicle circuits and ensures consistent trailer lighting for safe towing in any conditions.Reliable Trailer Lighting for Every Trip: Powers Brake, Turn, and Running Lights A well-lit trailer is a safe trailer. This 4-way wiring harness keeps your trailer's brake lights, turn signals, and running lights powered and in sync with your vehicle. Whether you're hauling a boat to the lake or a camper to the mountains, your lights stay bright and visible.
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • 4 Flat
  • Plug-In
  • CURT
  • Powered Converter
  • No Tow Package

Flint Hill Goods Connector Adapter - 7Way RV to 4Way Flat - 36" Cord

Our Price: $10.56
In Stock
This adapter lets you span 3' to connect your 7-way, RV-style, vehicle-end connector to the 4-way flat connector on your trailer. Coiled cord ensures that wires won't drag on the ground. Molded construction is durable and corrosion resistant.Features: Adapter converts your 7-pole, blade-style, vehicle-end connector for use with a 4-pole flat connector on your trailer Perfect for running power from your vehicle - with the 7-way RV plug - to a trailer with a 4-way flat plug Coiled cord stretches up to 3' long Prevents wires from dragging on ground Sturdy, weatherproof construction Molded construction resists corrosion Brass connectors give you a reliable connection Specs: Cord length: Contracted: 18" Extended: 36" Wire gauge: 18 AWG
  • Wiring Adapters
  • 7 Blade to 4 Flat
  • Flint Hill Goods
  • Universal Fit

TowSmart 4-Way Flat Connector Rapid Repair Trailer Wiring Kit

Our Price: $12.09
If all you have is a damaged 4-flat plug, this repair kit can save you time and money rather than having to replace the whole wiring. You can replace both the vehicle and trailer ends so you get a great connection again and get back on your journey.Features: Replaces a damaged 4-wire flat connector plug Includes plugs for both the vehicle and trailer ends No splicing necessary Quick and easy to use: Cut off damaged 4-wire flat Insert wires into Rapid Repair 4-wire flat connector according to color/function White wire is ground (GD) Brown wire is tail/marker lights (TM) Yellow wire is left turn signal (LT) Green wire is right turn signal (RT) Press on cap You now have new plugs to connect your vehicle to the trailer and go on your journey!
  • Trailer Connectors
  • Trailer End Connector
  • 4 Flat
  • TowSmart

TowSmart T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

Our Price: $25.98
In Stock
You're wiring your truck for towing and want it done right the first time. This connector installs cleanly and seals tight so you can trust every signal when you hook up the trailer.
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • 4 Flat
  • TowSmart
  • Factory Tow Package

TowSmart Plug-In Trailer Connector Adapter - 4-Way Flat to 7-Blade

Our Price: $26.30
In Stock
You switch between trailers and want less hassle. One connector at the vehicle keeps hookups quick so you can plug in and go without hunting for parts.Highlights Dual Sockets: 7 Blade and 4 Flat in one connector. Vehicle-End Connector: Plugs available at the vehicle side. Full Signal Support: Brake, turn, tail, electric brake, auxiliary, reverse, ground.
  • Wiring Adapters
  • 4 Flat to 7 Blade
  • TowSmart
  • Universal Fit

Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector

Retail: $135.95
Our Price: $87.94
In Stock
Install a 4-way flat on your vehicle with this splice-in harness. Powered converter connects directly to battery to reduce strain on wiring. Potted, SMT construction boosts water and vibration resistance. ...
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) Ensures that your vehicle's wiring matches that of your trailer Works with 2-wire, 3-wire and pulse-width modulation (PWM) systems Connects directly to your battery to avoid overloading your vehicle's electrical system Constructed using surface-mount technology (SMT) for consistent, reliable performance Maximizes trailer light yield and intensity while producing minimal heat Ensures superior operation in rough road conditions Resists water and vibration thanks to potted enclosure Connects directly to your vehicle's wiring with the included quick-splice connectors Color-coded wires and wiring guide ease installation Comes with dust cap for 4-way flat connector Specs: Maximum amperage: Stop/turn lights: 5 amps per circuit Tail lights: 7.5 amps per circuit Limited 1-year warranty Installation To determine where to splice into your vehicle's tail light wiring, you will need to consult the included instructions.
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • 4 Flat
  • Splice-In
  • CURT
  • Powered Converter
  • Universal Fit

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

Retail: $65.99
Our Price: $40.39
In Stock
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connector plugs directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.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 quickly and easily - no cutting or splicing of wires Locate connection point in rear cargo area Plug in connector Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer Powered module connects directly to battery to avoid overloading vehicle's electrical system Constructed using surface-mount technology (SMT) for consistent, reliable performance Maximizes trailer light yield and intensity while producing minimal heat Ensures superior operation in rough road conditions Comes with dust cap for 4-way flat connector Specs: Maximum amperage: Stop/turn lights: 3 amps per circuit Tail lights: 6 amps per circuit Limited 1-year warranty Installation This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the interior trim panel in your rear cargo area.
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • 4 Flat
  • Plug-In
  • CURT
  • Powered Converter
  • Hidden
  • No Tow Package

Curt Powered Tail Light Converter w/ 4-Way Flat Trailer Connector and Install Kit

Our Price: $169.25
In Stock
Great for cars and trailers with either LED or incandescent bulbs, this kit converts your vehicle's lighting system to match your trailer's. It includes a 4-way flat, wire taps, and a power wire that pulls power directly from your battery.The powered converter box has splice-in wires on one end and a harness with a 4-way flat vehicle-end connector on the other. It also comes with a power wire that will connect to your battery so your electrical system doesn't get overloaded.
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • 4 Flat
  • Splice-In
  • CURT
  • Powered Converter
  • Universal Fit

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

Retail: $121.95
Our Price: $72.90
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 is made using SMT to ensure superior performance.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 quickly and easily Locate connection points behind tail lights Plug in T-connector Run hot lead to car battery Includes powered tail light converter that connects directly to battery to avoid overloading vehicle's electrical system Constructed using surface-mount technology (SMT) for consistent, reliable performance Maximizes trailer light yield and intensity while producing minimal heat Ensures superior operation in rough road conditions Comes with dust cap for 4-way flat connector Specs: Maximum amperage: Stop/turn lights: 3.0 amps per circuit Tail lights: 6.0 amps per circuit Limited 1-year warranty Installation This custom-fit T-connector plugs into your vehicle's wiring harness, which is located in your rear cargo area, behind the driver's-side and passenger's-side tail lights.
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • 4 Flat
  • Plug-In
  • CURT
  • Powered Converter
  • Hidden
  • No Tow Package