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Roadmaster Diode 7-Wire to 4-Wire Flexo-Coil Wiring Kit

Retail: $217.92
Our Price: $154.32
In Stock
... . Includes 7-wire to 4-wire Flexo-Coil electrical cord. prevent corrosion Includes: 4 Hy-Power diodes; 30' long, 4-wire harness; wire connectors; cable ties; 1 ring terminal; 3' long plastic loom, 8 ft coiled cord, vehicle mounting bracket, and socket
  • Diode Kit
  • Splices into Vehicle Wiring
  • Roadmaster
  • Universal Fit

4-Way Wishbone Trailer Wiring Harness with 42" Ground Wire - 40' Long

Our Price: $38.89
In Stock
This wiring harness provides a simple, efficient method for rewiring your trailer with a 4-pole flat trailer-end connector. The wishbone-style harness has an extra tail light wire that makes it ...
Features: Provides simple, efficient method for rewiring your trailer with a 4-pole flat trailer-end connector Wishbone design - Y-harness contains an additional brown tail light wire Left-side tail
  • Vehicle End Connector
  • Trailer Hitch Wiring
  • 4 Flat
  • Optronics
  • Universal Fit
  • Splice-In
  • No Converter

25 ft. Wishbone 4-Way Trailer Wiring Harness with 42" Ground Wire

Our Price: $17.29
In Stock
25' Wishbone 4-Way Trailer Wiring Harness with 42" Ground Wire This is a 25' split wishbone 4-way trailer wiring harness with four conductors and a 42" ground wire. Manufacturer
  • Vehicle End Connector
  • Trailer Hitch Wiring
  • 4 Flat
  • Optronics
  • Universal Fit
  • Splice-In
  • No Converter

35 ft. Wishbone 4-Way Trailer Wiring Harness with 30" Ground Wire

Our Price: $19.99
In Stock
35' Wishbone 4-Way Trailer Wiring Harness with 30" Ground Wire This is a 35' split wishbone 4-way trailer wiring harness with four conductors and a 30" ground wire. Manufacturer
  • Vehicle End Connector
  • Trailer Hitch Wiring
  • 4 Flat
  • Optronics
  • Universal Fit
  • Splice-In
  • No Converter

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

Our Price: $15.64
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

30 ft. Wishbone 4-Way Trailer Wiring Harness with 30" Ground Wire

Our Price: $19.01
In Stock
30' Wishbone 4-Way Trailer Wiring Harness with 30" Ground Wire This is a 30' split wishbone 4-way trailer wiring harness with four conductors and a 30" ground wire.
  • Vehicle End Connector
  • Trailer Hitch Wiring
  • 4 Flat
  • Optronics
  • Universal Fit
  • Splice-In
  • No Converter

New Arrivals — From Our Shop to You!

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

New Arrivals — From Our Shop to You!

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

Kenny
Kenny etrailer team member
Kenny etrailer team member

3

Years

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278

Installations

3,868

Customers Helped

Any questions? Chat us from Missouri

RoadMaster 7-Wire to 4-Wire Straight Cord Kit

Retail: $109.04
Our Price: $72.50
In Stock
Easily and effectively connect your motor home to your towed vehicle with this water-, oil- and chemical-resistant electrical cord. Perfect for RoadMaster's All Terrain tow bars and tow bars with cable channel guides.
  • Adapters
  • Extension Cord
  • Plugs into Vehicle Wiring
  • 7 Blade to 4 Round
  • Roadmaster
  • Universal Fit

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

Retail: $51.79
Our Price: $39.77
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

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

Retail: $36.13
Our Price: $23.94
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

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

Retail: $159.37
Our Price: $100.94
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 Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 4' Long

Our Price: $6.58
In Stock
Wire your trailer with this universal, splice-in wiring harness so that you can connect the trailer's wiring to your vehicle's during towing. Corrosion-resistant terminals are long-lasting ...
Features: 4-Way flat trailer-end connector plugs into the 4-way flat on your vehicle Simple installation Hardwire to existing trailer wiring Corrosion-resistant terminals are long-lasting SAE
  • Trailer End Connector
  • Trailer Connectors
  • 4 Flat
  • Hopkins

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

Retail: $130.00
Our Price: $107.28
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

Adapter 4 Pole to 6 Pole and 4 Pole Trailer Wiring Adapter

Retail: $45.54
Our Price: $40.42
In Stock
Adapter converts from 4 pole wiring on vehicle to 6 pole round plug and 4 pole flat. Additional wire leads for brake and an accessory. 4 Pole to 6 pole and 4 pole vehicle side trailer wiring adapter
  • Wiring Adapters
  • 4 Flat to 6 Round
  • Hopkins
  • Universal Fit

Blue Ox 4-Wire, Coiled Electrical Cord with 4-Way, Round Plugs

Retail: $110.00
Our Price: $73.25
In Stock
Quickly and easily connect your towed vehicle to your RV with this durable, insulated electrical cable. Includes 4-way, round RV and vehicle plugs.Features: 4-Wire extension cord can be used for multiple towing applications Perfect for running power from your RV to your towed vehicle Included 4-way, round, female plugs mount to RV and towed
  • Extension Cord
  • Plugs into Vehicle Wiring
  • 4 Round
  • Blue Ox
  • Universal Fit

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

Our Price: $43.62
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.Features: Allows RV's turn and brake signals to display on your towed car Prevents feedback that can damage your vehicle's electrical components Includes 4 diodes, spade connectors, and 4
  • Diode Kit
  • Splices into Vehicle Wiring
  • 4 Flat
  • Hopkins
  • Universal Fit

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

Retail: $147.95
Our Price: $109.14
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 ...
you're ready to tow. 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
  • Vehicle End Connector
  • Trailer Hitch Wiring
  • 4 Flat
  • CURT
  • No Tow Package
  • Plug-In
  • Powered Converter
  • Hidden

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

Our Price: $158.96
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) Includes
  • Vehicle End Connector
  • Trailer Hitch Wiring
  • 4 Flat
  • CURT
  • No Tow Package
  • Plug-In
  • Powered Converter
  • Hidden

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

Retail: $152.95
Our Price: $122.34
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 ...
you're ready to tow. 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
  • Vehicle End Connector
  • Trailer Hitch Wiring
  • 4 Flat
  • CURT
  • No Tow Package
  • Plug-In
  • Powered Converter
  • Hidden

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

Retail: $104.95
Our Price: $83.63
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 ...
you're ready to tow. 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
  • Vehicle End Connector
  • Trailer Hitch Wiring
  • 4 Flat
  • CURT
  • No Tow Package
  • Plug-In
  • Powered Converter
  • Hidden

TowSmart 16 to 18 Gauge, 4 Conductor Wire - 100'

Retail: $59.99
Our Price: $48.91
In Stock
You're repairing a trailer harness and want clean, simple wiring. This 4 wire bonded roll keeps runs together and color coded so you can route quickly and finish with a tidy, reliable setup.Highlights 4 Wire Bonded: Keeps runs neat and easy to route. Color Coded: Simplifies identification during installs. 100 Foot Roll: Enough length for repairs or full rewires. 16/18 AWG: Fits common
  • Bonded Wire
  • Wire
  • TowSmart
  • 4 Wire
  • 18 Gauge
  • 16 Gauge

TowSmart 14 Gauge, 4 Conductor Wire - 25'

Our Price: $30.89
In Stock
You're rewiring your trailer before the next haul. This color-coded wire keeps everything organized and secure so you can trust every connection when it's time to roll.Highlights 4 Wire Bonded Design: Keeps wiring neat and easy to route. Color Coded: Simplifies installation and identification. Versatile Use: Ideal for trailers, trucks, and boats. Clean Setup
  • Bonded Wire
  • Wire
  • TowSmart
  • 4 Wire
  • 14 Gauge

Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord

Retail: $226.99
Our Price: $180.80
In Stock
This complete kit includes everything you need to connect your RV's tail, brake, and turn signal lights to your towed car. Diodes prevent damage from electrical feedback. Includes 7-way to 6-way coiled adapter cord and 6-way socket. 6-Way socket hardwires to towed car and mounts with included bracket Kit includes: 4 Hy-Power diodes 4-Wire harness 7-Way to 6-way coiled adapter cord 6-Way socket with mounting bracket 1 Butt connector
  • Diode Kit
  • Splices into Vehicle Wiring
  • 7 Blade to 6 Round
  • Roadmaster
  • Universal Fit

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

Retail: $58.99
Our Price: $39.73
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 ...
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
  • No Tow Package
  • Plug-In
  • Powered Converter
  • Hidden

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

Our Price: $74.73
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
  • No Tow Package
  • Plug-In
  • Powered Converter
  • Hidden