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  2. CURT
  3. 4 Flat
  4. No Tow Package
  5. Trailer Hitch Wiring
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2010 Lexus LX 570
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CURT

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

Part Number: 56010
28 Reviews | 11 Questions
$56.22
Retail:$72.95
You Save: 23%
 Custom Fit Vehicle Wiring
Not Confirmed to Fit

2010 Lexus LX 570

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curt custom fit vehicle wiring trailer hitch end connector

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Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance. 1-800-940-8924 to order CURT custom fit vehicle wiring part number 56010 or order online at etrailer.com. Free expert support on all CURT products. Great prices and Fastest Shipping for Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (28)
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CURT Custom Fit Vehicle Wiring - 56010

Highlights

  • Custom Fit for Your Vehicle: Works with your vehicle's wiring
  • Tow Without Factory Prep: 4-pole flat connector powers trailer lights for safe towing.
  • Plug-and-Play Install: T-connector plugs inline with tail light wiring—no splicing.
  • Protected Circuits: Built-in converter box shields vehicle lights from trailer shorts.
  • Clean Fit: Uses existing rear light connectors for a factory-style installation.
  • Reliable Ground: Simple ring terminal mount ensures solid lighting connection.

Features to know about

Installs Without Cutting or Splicing: Plug-In T-Connector Design

Wiring up a trailer can be intimidating, but this harness keeps it easy. The Curt T-Connector plugs inline with the existing tail light connectors, so there’s no need to cut or tap into factory wiring. Just unplug the vehicle connectors, snap the new ones in place, and you’ve got a clean 4-flat trailer connection ready to go.

Protects Vehicle Lighting Circuits: Built-In Converter with Circuit Protection

A short on a trailer can take out a vehicle’s lights if the wiring isn’t protected. This harness includes an integrated converter box that keeps your vehicle’s lighting system safe. It isolates and safeguards your brake, tail, and turn signal circuits, so even if there’s a fault on the trailer side, the vehicle lights stay functional.

Simple Setup Behind the Tail Lights: No Extra Wiring Runs

Installation doesn’t require tracing wires or running lines across the vehicle. The harness installs right behind each tail light using snap-together connectors. Once both sides are plugged in, you only need to secure the ground wire with one small drilled hole for the ring terminal. It’s straightforward and doesn’t involve any complicated routing.

Ready for Standard Trailer Lighting: 4-Pole Flat Connector Output

The built-in 4-flat plug provides power for running lights, brake lights, and left and right turn signals—everything needed for most small trailers. Once connected, it gives you reliable lighting signals every time you hook up your trailer, making towing safer and simpler.

Specs

Electrical

  • Connector type: 4-Pole Flat Trailer Connector
  • Design: Plug-in T-Connector
  • Circuit protection: Built-in converter

Comparison chart showing Curt T-Connector vehicle wiring harnesses with labeled connectors and converter boxes for trailer light installation.

Compatibility

  • Vehicle fit: 2000–2006 Mazda MPV (without tow package)

Installation

  • Installation style: Vehicle-specific, plug-and-play, no cutting or splicing required
  • Location: Installs inline with connectors at rear taillights (driver and passenger sides)
  • Ground: Requires drilling one small hole for ground wire ring terminal

56010 CURT T-Connector - Surface Mount Technology - 4 Wire

Installation Details 56010 Installation instructions

This Product Fits The Following Vehicles




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Ratings & Reviews

4.7

28 reviews
5 Stars
(24)
4 Stars
(2)
3 Stars
(1)
2 Stars
(0)
1 Star
(1)
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by:
2005 Mazda MPV Van
Installed it in my 2004 Mazda MPV to allow me to use a rented U-Haul motorcycle trailer. I was really pleased to find this harness readily available now although the MPV has been out of production since 2005.
Given the very reasonable price I was truly surprised at the quality of this harness and the attention to detail paid in assembly (like the well applied heat shrink tube insulation) and accessories such as the included cable ties. I first thought the instructions were a little light but once I was actually working on the car I found them adequate, and the installation was straight forward.
I honestly could not be more pleased with product and delivery.
Bernhard L. profile picture

Bernhard L.

11/23/2017

I use it only occasionally but so far it has been working just fine. Still perfectly happy.

by:
Easy install, first time I've done this and it was a piece of cake. The in-line couplers make it easy. Good instructions, but not much info on the passenger side install. You need a 10 mm socket to remove a bolt in 2 locations, both part of a storage clip. After they're removed, pry back the molding to get at the plug. Mine was behind some foam padding (picture). Before I put it back together , I tested it with an inexpensive tester like Code: I26, Worked perfectly. Definitely recommend this product.
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by:
2006 Mazda MPV Van
Easy to find on the website. Arrived quickly. Quality product that was as simple to install as it can be, plug and play, no cutting. Customer service from Etrailer is refreshingly great.
by:
2004 Mazda MPV-Van
I ordered this item from etrailer.com mainly because their website was well thought out and made the most sense. So helpful in fact was their site that I didn't have to read the instructions when my item arrived. The installation was a cinch. The price was very fair and the delivery was very fast. I will definitely shop from trailer.com in the future. They are very professional and I highly recommend them.
by:
Mazda MPV Van
Product, made by Curt Mfg., was perfect for my MPV Minivan.
Installed without a hitch (pardon the pun).
Tested on my boat's trailer, and worked as designed.

Great product.

Kudos to Curt. My second purchase of their products.
by:
Product was just like picture well build. the reason for a 3 star is shipping could not track order.Base on quality would ordered again great products.
by:
Well thought out design. Installation instructions concise and straightforward. Color pictures a nice touch.
by:
This product worked exactly as advertised. It was very easy to use and has worked perfectly since the installation.
by:
Im honestly shocked at how easy this was, Ive been paying Uhaul to install my lights for years! They normally charge 125-150$, this took me 10 minutes to install, and it worked perfectly, the included instructions guided me nicely through the process.
by:
2002 Mazda MPV Van
Very good product easy installation and works perfectly on my 2002 MPV
by:
need to splice anything. Ease of installing wiring is why I decidet to do self install of hitch & wire, rather than pay $400 to have it done
by:
2004 Mazda MPV Van
Easy install with instructions specific to wife's van. Tucks away out of sight when not in use and no tangled mess.
Very fast delivery of order, greatly appreciated.
by:
2005 Mazda MPV Van
Worked well. Install video was very helpful. Thank you etrailer.com!
by:
2005 Mazda MPV Van
The part arrived within 3 days from when I ordered it. I t is exactly as pictured. I would order from etrailer again.
by:
2003 Mazda MPV Van
A greatproduct delivered in 4 days when othersaid a long wait. s
Johnny G. profile picture

Johnny G.

7/10/2018

Works great. Made for an easy install.

by:
and received when promised. Thank you for the great customer service.
by:
The product arrived promptly, fit perfectly, and there have been no problems.
by:
works as it should with no splicing or tapping of factory wiring. plugged right in and installation was easy.
by:
Super easy install! The directions made it even easier!
by:
2005 Mazda MPV Van
Shipment arrived a day early, all needed parts fit, install was easy!
Very good product and easy to order.
by:
Works just fine. No problems.
by:
2004 Mazda MPV Van
better connections than I had before.
by:
works great..
by:
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See what our Experts say about this CURT Custom Fit Vehicle Wiring

Do you have a question about this Custom Fit Vehicle Wiring?
  • Why is My Right Turn Signal Hyper-Flashing After Installing Curt Trailer Wiring on Jeep?
    Hello again, Joe, I’m sorry to inform you, but you do not have the correct wiring. The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 56010 is designed for a 2000–2006 Mazda MPV van. I’m not sure how this was installed, as it does not have the correct connectors for your vehicle. You will need the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56009 instead. This is the correct harness for your vehicle and should resolve all...
    view full answer...
  • Hitch and Timbren System Recommendation for a 2002 Mazda MPV Van
    I attached a link to the hitch install video you referenced that shows a no discontinued Hidden Hitch on a 2003 Mazda MPV. I was able to get it to play all the way through so hopefully the issue you had with the video has resolved itself. If not, maybe try a different web browser. We currently have the Curt Trailer Hitch Receiver - Custom Fit - Class II - 1-1/4" # C12288. And for trailer wiring use # 56010. There is a Timbren system confirmed to fit your vehicle as well. Check out part...
    view full answer...
    Image 1 for
  • Troubleshooting a Curt Trailer Harness, Brake and Left Blinker Not Working
    The first thing I would do is test for voltage between the tail light connectors and the convertor box to see if the correct voltage is going into the box, but none is coming out on the green wire. This will tell you if the problem is in the box or if it is in the connector. If you see voltage on the brake and left flasher circuit going into the box, but none coming out then you know the problem is in the box. If there is no voltage on the circuit going into the box either you know the...
    view full answer...
  • 2 inch Hitch Recommendation for a 2005 Mazda MPV
    The two different MPV's you mentioned are of different generations so the hitch fits between the two aren't the same. For your 2005 you would want the part # C12288 which is a confirmed fit. This is a 1-1/4" hitch, and the only one available. There are no 2" hitches avalable. For trailer wiring you would then want the part # 56010.
    view full answer...
  • How to Determine if a 2000 Mazda MPV Van has Ground Effects
    From what I could find it appears that models that do have the ground effects will have a trim piece at the bottom of the rear bumper that also wraps around to the sides of the vehicle. I included a picture with an arrow pointing to the area in question next to a van that does not have that trim piece. However, I do recommend contacting a Mazda dealer and have them run the VIN number and they can tell you what options came with the van. The hitch # C12288 will work on you MPV Van whether...
    view full answer...
    Image 1 for
  • Installation Process for Curt Trailer Wiring Harness # 56010 in 2004 Mazda MPV Van
    We have not yet had a chance to video an installation of Curt wiring harness # 56010 in a 2004 Mazda MPV Van but the installation process is fairly simple, requiring only that you remove your taillight assemblies briefly to plug in the snap-together connectors and drill one small hole for the harness's ground wire ring terminal. These steps are all that are required to complete installation. The written instructions for this harness are linked for you.
    view full answer...
  • What Kind of Suspension Enhancement will Fit My 2002 Mazda MPV Van?
    We do have a suspension enhancement system that works for your 2002 Mazda MPV, but Air Lift # AL60759 does not fit. Currently the only suspension enhancement we sell for your application is the Timbren jounce spring # TMRMPV. This jounce spring only works with the 2wd van. The Timbren system is easy to install and is maintenance free. A Timbren jounce spring is a good idea because you don't need to add air before towing and there aren't any leaks to worry about. Air helper springs are good...
    view full answer...
  • Troubleshooting Curt T-Connector Wiring Harness # 56010 with Left Blinker Always On
    Thank you for clearly describing the issue you are having with your Curt T-Connector trailer wiring harness # 56010 and also the troubleshooting steps you have taken to diagnose the issue in your Mazda MPV van. Apply your circuit tester (such as # 40376) to the yellow wire leading from the left T-connector to the left (input) side of the harness. This is the wire that carries the left turn signal from the vehicle. If this wire carries a 12V signal without the turn signal engaged then the...
    view full answer...
  • Concerns About Using Older Vehicle for Towing Rental Trailer Over Mountains
    In my research, I saw several reports stating that if the vehicle has the tow package, which consists of a transmission cooler and heavy duty radiator, it can tow up to 3000 lbs. Without the tow package, you'll be limited to 2000 lbs. I would urge you to confirm this for yourself. Your Mazda dealer might be able to clarify for you. Given the fact that the vehicle has over 100,000 miles and given that your trip to California will almost certainly involve driving up and down mountains, I'd...
    view full answer...
  • Trailer Wiring Recommendation and Installation Instructions for 2000 Mazda MPV
    We don't have an install video yet for the Curt harness part # 56010 that you referenced, but I did attach a set of installation instructions that will walk you through the process on your 2000 Mazda MPV Van.
    view full answer...
  • Trailer Wiring Installation on a 2001Mazda MPV
    The Curt Circuit Protected T-Connector Vehicle Wiring Harness - for Mazda MPV, item # 56010, will be installed inline with the connectors at the rear of the vehicle tail lights. On the drivers side and the passengers side you will need to remove the push pins, trim panels, cargo hooks and jack cover to access the tail light wiring. Once the wiring is located you will just have to disconnect the connectors, making sure not to break the locking tabs, and plug the new harness into the existing...
    view full answer...

Do you have a question about this Custom Fit Vehicle Wiring?


Info for this part was:

Employee Lindsey S
Updated by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Robert G
Expert Research:
Robert G
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jeff D
Installed by:
Jeff D

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