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πŸ”Œ curt 57004: led-compatible 7-way rv blade vehicle-side to 4-way flat trailer-side wiring adapter - black logo

πŸ”Œ CURT 57004: LED-Compatible 7-Way RV Blade Vehicle-Side to 4-Way Flat Trailer-Side Wiring Adapter - Black Review

8

Β·

Very good

Revainrating 4.5 out of 5Β Β 
RatingΒ 
4.3
πŸ”§ Trailer Accessories, πŸš— Exterior Car Accessories

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Description of πŸ”Œ CURT 57004: LED-Compatible 7-Way RV Blade Vehicle-Side to 4-Way Flat Trailer-Side Wiring Adapter - Black

VERSATILE DESIGN. This trailer wiring adapter makes it easy to connect a mismatched vehicle socket and trailer plug, adapting your 7-way RV blade connector into a standard 4-way or 5-way flat socket. LED-COMPATIBLE. This trailer hitch wiring adapter plugs into any standard 7-way RV blade and enables the vehicle to recognize LED trailer lights. It connects the taillights, brake lights, reverse lights, turn signals, trailer brakes and auxiliary power. EASY GRIP. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of this trailer wiring adapter. It features two hooks on either side of the plug for a better grip when plugging in or unplugging trailer wiring. NO-SPLICE INSTALL. This 7-pin to 4-pin trailer adapter wiring comes ready to plug into your vehicle or trailer wiring with zero splicing required. DURABLE CONSTRUCTION. 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.

Reviews

Global ratings 8
  • 5
    6
  • 4
    0
  • 3
    0
  • 2
    2
  • 1
    0

Type of review

Revainrating 5 out of 5

Works as described

Mercedes GL550 with new LED headlights allowed to work on a rewired boat trailer. Without this resistor connection, the high beam will be dimly lit with no brake or directional operation.

Pros
  • Best in niche
Cons
  • Questionable senior purchase

Revainrating 5 out of 5

Works fine on my 2018 F150.

I have replaced all the bulbs in my trailer with LEDs. There were problems with the truck not recognizing the LED lights. This plugin solved the problem.

Pros
  • Very good price
Cons
  • Ugly packaging

Revainrating 2 out of 5

Didn't work for lights

I bought this adapter because my 2019 Expedition Max doesn't like my boat trailer with LED lights. This adapter was actually worse than just a flat 4 pin connector. return as soon as possible.

Pros
  • Weight
Cons
  • Can't remember

Revainrating 5 out of 5

Fits Mercedes GLE

I just upgraded my trailer to LED lights and needed one to get them working properly. I plugged in this built in adapter, then connected my flat four trailer to this product and now everything works great.

Pros
  • Great for a small house
Cons
  • Very expensive

Revainrating 5 out of 5

Works great on 2010 ML350

Purchased for use with a rental U trailer and ML350. Works great, no problems. Throws bulb errors when no trailer is plugged in and unplugged and also makes the turn signals fun, so remove when no trailer is plugged in.

Pros
  • Everything is great!
Cons
  • Vulgarity

Revainrating 5 out of 5

Perfect fit for VW Touareg

This adapter is perfect for my 2004 VW Touareg with factory towing package. The dashboard used to chime every minute or two warning that the trailer lights weren't working, even though they were working. Now not only do they work fine, but the computer doesn't complain about burned out lightbulbs.

Pros
  • Quality construction
Cons
  • Very expensive

Revainrating 2 out of 5

Does not work on Audi SUV 2012

Received an extra star because the trailer has LED lights. I'm only giving it two stars because the product packaging states that the trailer's LED lights work fine on European cars with OEM couplers installed (mine came factory installed on my Audi SUV): dash, so it doesn't work. Bought the TrailerReady version, looks very similar and works better. If you don't care about the dash indicator light, just buy the cheap $5 version of this adapter and it will do the same.

Pros
  • Handsfree
Cons
  • There are other interesting options.

Revainrating 5 out of 5

Suitable for my Audi Q7 2019

Having bought my new Audi Q7 2019 in late summer, I was disappointed when I first plugged in the trailer headlights and got the error message 'Turn Signal Lamp Error' on my car display. I called my dealer but he didn't understand anything. So does the parts manager and even the local auto parts store. My brother-in-law told me I would need to fit resistors in series with the trailer's LED light wires - I was reluctant to do this for two reasons - I didn't feel the wires get cut or spliced, and…

Pros
  • Easy Tuning
Cons
  • Repair