Top 10 4pin to 7 Pin Trailer Adapter – Towing Hitch Wiring

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1. CURT

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CURT 57672 Dual-Output 4-Way Flat Vehicle-Side to 7-Way RV Blade Trailer Wiring Adapter

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CURT #ad - This trailer wiring harness adapter comes with dust covers for the 4-pin and 7-pin wiring sockets to protect the terminals from water, dirt and corrosion. This trailer hitch wiring adapter plugs into any standard 4-way flat and can be used to connect the taillights, turn signals, reverse lights, brake lights, trailer brakes and auxiliary power some splicing required.

Durable construction. Standard connection. Weather-resistant. It also includes a mounting bracket for convenient attachment to your hitch or bumper. Versatile design. This dual-output trailer wiring adapter makes it easy to tow different trailers with your vehicle, equipping it with a standard 7-way RV blade socket while retaining use of the existing 4-way flat wiring.

This dual-output 4-pin to 7-pin trailer adapter wiring comes ready to plug into your vehicle or trailer wiring with minimal splicing required. The wiring harness is also well-protected with the included slit loom sleeve. For long-lasting use and a reliable connection, the housing of this trailer harness adapter is made from durable black plastic that will never rust or corrode. Easy to install.
BrandCURT #ad
ManufacturerCurt Manufacturing #ad
Height2 Inches
Length7 Inches
Weight1.1 Pounds
Width2 Inches
Part Number57672
Model57672
WarrantyOne-Year Limited Warranty

2. OPT7

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OPT7 Weatherproof 7 Way Flat Blade to 4 Way Pin Adapter w/Secure Tab, for Trailer Tow Hitch and Redline Tailgate LED

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OPT7 #ad - Stays on tight: use your 7-pin dust cover to secure your adapter in place. The strongest beasts adapt: give your rig the ability to light up any trailer, camper, or accessory. Ready for any situation: Sealed weatherproof construction with rust resistant prongs and cap cover. Perfect for uhaul, trailers, 5th wheel, and any auxillery lighting. It will not fall off. Fully covered by our free 1 year warranty, offered only by OPT7 Lighting.
BrandOPT7 #ad
ManufacturerOPT7 #ad
Height4.33 Inches
Length2.95 Inches
Weight0.31 Pounds
Width1.77 Inches
Part Number900-00121-2
Model900-00121-2

3. MICTUNING

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MICTUNING 4-Way Flat to 7-Way Round Blade Trailer Adapter Wiring Plug Connector with Mounting Bracket

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MICTUNING #ad - Make the wiring easier - plug and play, synchronize the trailer's signal light, and customize the plug-in wiring system to connect the trailer, convert the car's 4-pin flat socket to the 7-pin blade round socket for the trailer, which is very convenient and solves the trouble of rewiring every time.

High-quality manufacturing - using pure copper as the inner core, corrosion-resistant, greatly improves the electrical conductivity. Wide application - applicable to all towing vehicles that don't require electric brakes, semi-trailers, including trailers, RVs, etc. Simple to install - equipped with mounting bracket, and nuts, screws, just find the right position to install and tighten the nut to install successfully.

Provide extra protection - with the spring-loaded cover, high dust-proof, to avoid the adapter damage from the external environment when it is not in use. With the high-quality PVC shell, wear-resistant, effectively waterproof and long service life.
BrandMICTUNING #ad
ManufacturerMICTUNING #ad
Part NumberMIC-HA-359

4. AutoSonic

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7 pin to 4 pin Trailer Converter, Female Trailer Connector Plug, AutoSonic 7 Way Blade to 4 Way Flat Trailer Adapter, Weatherproof, Flat Connection

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AutoSonic #ad - Go with autosoinc products & go with confidence: we are proud of our quality products and stand behind them, that’s why what you will also get is our unbeatable Lifetime Warranty Customer Service, the only one of its kind you can find on Amazon.

We hold the highest bar in the industry, the autosonic 7 way to 4 Way Trailer Adapter is made of durable and weather-resistant materials with second to none craftsmanship which is going to help insure that this adapter is going to last for years of trouble-free operation. You can quickly and easily convert a 7-pole, flat connector with the AutoSonic 7 Way to 4 Way Trailer Adapter, rv-style connector to a 4-way, it can allow your vehicle to tow either campers or boat trailers without electrical brakes.

Its plug & play function, super high quality nature makes it a must-have gadget for your towing vehicles, you'd be smart to get one for yourself and upgrade your towing experience. The autosonic adapter features a classic while compact design, and it also comes with a anti-dust cover, not only to make it look like more sexy but also offer way better protection than others on the market that don’t come with any covers.
BrandAutoSonic #ad
ManufacturerAutoSonic Products #ad
Height2 Inches
Length3.6 Inches
Weight0.18 Pounds
Width1.9 Inches
Part NumberOGL-1072
ModelOGL-1072

5. Kohree

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Kohree 4 Way Flat to 7 Way Round Blade Trailer Adapter Plug End 4 pin to 7 pin Electrical Connector with Mounting Bracket for RV, Car, Truck

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Kohree #ad - Ultra durabilitykohree trailer connector is made from heavy plastic for lightweight and durability. Well-sealed spring-loaded dust cover protects connector from dusts and corrosion. Brass terminals and tin contact offer better electrical conductivity.

Protective weatherproof cap, easily and tightly snaps into trailer's existing socket and holds without any wiggle or loose, it's READY for any road condition. Tight-fitted towing adapter this adapter converts the 4-way flat socket to the 7-way round type socket, reverse light, connecting tail light, turn signals, brakes and auxiliary power, transfer the power from the vehicle to trailer. Hassle-free setupstandard round 7-way flat blade connector, simple plug-and-play.

We are ready to help if you have any worry. This 4 way trailer adapter plug works fine with any factory OEM 7-way plug, RV, offers a trusted power supply for towing, RAM, Ford, Toyota or GMC. Power up any trailer lightskohree heavy duty 4 way to 7 way adapter, suitable for Boat, tail lamps, chevrolet, ATV, Dodge, well lights up running lights, rv camper lights or other 4-pin led accessories. What you'll getlifetime best customer service, 1x 4 way to 7 way adapter plug.
BrandKohree #ad
ManufacturerKohree #ad
Part NumberHY0422-HM

6. CARROFIX

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CARROFIX 4 Flat Truck to 7 Way Round Trailer Light Adapter Reverse Plug with Mounting Bracket

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CARROFIX #ad - No splicing of wires needed, plug ends are secure and ready to go. Converts 4 way flat vehicle end to 7 way blade trailer end, voltage range: 6-24 Volts. Well sealed spring-loaded dust cover protects adapter from elements when leave unused. Easily to create custom plug-in wiring systems for towing solutions. 4 wire to 7 way trailer blade round, connects tail reverse turn signals.
BrandCARROFIX #ad
ManufacturerCARROFIX #ad
Weight0.74 Pounds
Part NumberCRF-1701K-B

7. SnowyFox

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SnowyFox 4 Flat to 7 Way Round Trailer Light Adapter Plug 6-24V for Trailer RV Boat Car with Mounting Bracket

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SnowyFox #ad - Provide better protection - with spring-loaded protective cover, it is dust-proof and moisture-proof, providing better protection for the adapter plug. Strong and durable - made of 100% copper, corrosion-resistance, has excellent electrical conductivity, wear-resistance, combined with a strong PVC casing, and is extremely durable.

Wide application - applicable to all towing vehicles that don't require electric brakes, semi-trailers, RVs, including trailers, etc. Easily synchronize the trailer's lights - snowy fox adapter plug converts the car's 4-pin flat socket to the 7-pin blade round socket for the trailer, plug and play, customize the plug-in wiring system to connect the trailer, which is very convenient and solves the trouble of rewiring every time.

Easy to install - equipped with mounting bracket, screws, and nuts, just find the right position to install and tighten the nut to install successfully.
BrandSnowyFox #ad
ManufacturerSnowyFox #ad
Part NumberSF-HA-024

8. CURT

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CURT 57186 4-Way Flat Vehicle-Side to 7-Way RV Blade Trailer Adapter with Brake Controller Wiring

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CURT #ad - This trailer wiring harness adapter comes with a spring-loaded dust cover for the 7-pin wiring socket to protect the terminals from water, dirt and corrosion. It plugs into a 4-way flat connector and provides a standard 7-way RV blade socket with brake controller wiring components.

The wiring harness is also well-protected with the included slit loom sleeve. Standard connection. Weather-resistant. This trailer hitch wiring adapter plugs into any standard 4-way flat and can be used to connect the taillights, brake lights, turn signals, reverse lights, trailer brakes and auxiliary power some splicing required. Easy to install. Durable construction.

This 4-pin to 7-pin trailer adapter with brake controller wiring comes ready to plug into your vehicle or trailer wiring with minimal splicing required. For long-lasting use and a reliable connection, the housing of this trailer harness adapter is made from durable black plastic that will never rust or corrode. Brake controller connection. This trailer wiring adapter makes it easy to add wiring for a trailer brake controller.
BrandCURT #ad
ManufacturerCurt Manufacturing #ad
Height0 Inches
Length0 Inches
Weight2.55 Pounds
Width0 Inches
Part Number57186
Model57186
WarrantyOne-Year Limited Warranty

9. NEW SUN

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NEW SUN 4 Way Flat Truck to 7 Way Round RV Trailer Blade Socket Adapter with Mounting Bracket

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NEW SUN #ad - Works with all towing vehicles that don't require electric brakes. Spring-loaded dust cover keeps adapter clean when not in use. The 7 way blade socket connects to your RV trailers. The 4-way flat plug connects to your towed vehicle. No splicing of wires needed, flexible wiring harness 5" length.
BrandNEW SUN #ad
ManufacturerNEW SUN #ad
Weight0.33 Pounds
Part NumberTKB-192

10. Super repairman

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Super repairman 7 Pin Round to 4 Pin 5 Pin Flat Blade Trailer RV Boat Adapter Plug

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Super repairman #ad - Hassle free setup, no wiring nor splicing required, Just Plug-N-Play. A replacement or full refund will be guaranteed if you are not satisfied with the item.

Widely used - 7 way to 4 way 5 way trailer plug works fine with any factory OEM 7-way plug, RAM, Chevrolet, Dodge, Ford, ATV, suitable for Boat, RV, Toyota or GMC.7pin to 4/5 pin - converts 7-way round trailer connector to a 4-way or 5-way, RV-style connector. Trailer plug - applicable for utility RV boat camper trailer car carrier. 60 days Money Back. Lifetime - "super repairman" professional 7 way trailer plug, 7 pin Round to 4 pin or 5 pin Flat Blade Manufacturer. Easy to use - simple plug-and-play, eliminates the need for cutting or splicing.
BrandSuper repairman #ad
ManufacturerZach Qatar Mall #ad
Weight0.28 Pounds
Part Number7 to 4 Way 5 Way Trailer Adapter