Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
(973 reviews)
Price: $38.36
In Stock
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Item # C56217
Retail:$73.71
Our Price: $38.36
You Save: 48%
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- Reviews (973)
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CURT Custom Fit Vehicle Wiring - C56217
- Custom Fit
- Trailer Hitch Wiring
- 4 Flat
- Powered Converter
- CURT
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connectors plug 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
- Tow harness with 4-way connector plugs into connection point in rear cargo area
- 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
- 1-Year limited warranty
Installation
This custom-fit T-connector plugs into your vehicle's wiring harness. The connection point for the 4-way tow harness is located behind the interior trim panel in your rear cargo area. Once you've plugged in the converter, insert the included 10-amp fuse into the integrated fuse holder.
Once installation is complete, the 4-way connector will be stowed in an out-of-the-way location within your cargo area.
It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.
Powered Tail Light Converter with Surface-Mount Technology
A tail light converter is built into this T-connector. This converter is a circuit-protected, battery-powered unit that bypasses the electrical routes that are used by a basic wiring harness. As a result, there is virtually no draw on your tail light circuits.
Because most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are compatible with the wiring system of the trailer. This converter combines the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.
Curt builds each tail light converter using surface-mount technology (SMT). This method of construction involves soldering electronic components directly to the surface of a printed circuit board. SMT eliminates the need for leads, which are used in older through-hole technology. The result is a circuit board that is smaller yet provides more routing area and that offers superior performance, reliability and durability.
Circuit boards constructed using SMT have been shown to perform better under rough conditions with excessive vibration than those made using the through-hole method. And where would vibration be more likely to occur than in towing applications? Curt converters also produce less heat, leading to increased durability and longer life. In addition, lower levels of resistance ensure better performance, especially for parts that operate at higher frequencies.
Each Curt circuit board is made using high-quality components that are pieced together in the most technologically savvy fashion, leading to greater predictability and reliability in functioning.
56217 CURT T-Connector - Surface Mount Technology - 4 Wire
Replaces 56034
Installation Details
This Product Fits The Following Vehicles
- 2008 - 2019 Toyota Highlander
- 2008 - 2019 Toyota Highlander without factory tow package
- 2020 - 2021 Lexus RX 350 without factory tow package
- 2018 - 2022 Lexus RX 350 L excluding Dual Exhaust
- 2020 - 2021 Lexus RX 350 L without factory tow package
California residents: click here
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
- Wrong item was ordered
- Product did not meet expectations
- etrailer mistake
Customer Reviews
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C56217
Average Customer Rating: 4.8 out of 5 stars (973 Customer Reviews)
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connectors plug directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.by: Joshua06/11/2022
The website gave me the perfect fit for our Highlander. Shipping was fast and arrived on time. Installation was a breeze with the hitch and wiring harness. Great overall experience. FYI…I installed this entire system by myself in under an hour.
by: Kenneth E11/08/2023
2017 Toyota Highlander
I just received the trailer hitch and the wiring harness about 2 hours ago. So I really can't read it yet. But reviewing the YouTube how to install them I believe I am going to be very very happy
by: Tom 09/12/2023
Everything went well during hitch install. However, the wiring harness instructions did not clearly identify exactly where the extra fuse goes. Nor does the included 10 amp fuse match the rating in the fusebox, which states 30 amp. So ... will need to wait and see if it works. Great looking trailer hitch!
by: Alvin10/22/2022
2016 Toyota Highlander
I was extremely happy with the etrailer hitch, l had a little problem installing the hitch because l had one bolt hole that did not line up, l did not have a vise to hold the the hitch in place move it a few inches however l did have a come along l was able to loosen two of the bolt attach the hook from the come along and ratchet the hitch bolt hole a few inches until it aligned with the hole on the truck body. I was able to screw in the bolt. The hitch looks great.l highly recommend etrailer for any towing needs
by: Chris04/30/2022
15 mins and harness was in and trim put back in place. Very happy with video from etrailer on install. Super easy plug and play. So simple thanks to you guys. Saved at least $200 doing harness and hitch by myself. Thank etrailer
Chris
5/1/2023
Holding up very well after being on for a year
by: John08/19/2023
etrailer makes installing a breeze with their videos. Installed a hitch and wiring harness on our 2015 Highlander and it couldn't have been easier. Thank you etrailer for making a possible frustrating job simple!
by: Daniel R06/25/2023
Saturn Relay
This wiring harness kit fit my vehicle perfectly and provides the correct electrical relay voltage to operate my trailer lights. Instructions were easy to follow and all parts were included to finish the installation.
by: Tom 10/22/2023
The harness took me one hour to install. That included getting the tools, installing the harness. Confirming it worked properly with a multimeter and putting the tools away.
by: Scott08/30/2023
Horrible. The video is for a Highlander, which is different enough to be useless. Found the 10-pin, disassembled the entire rear, can't find the 4-pin. etrailer supports response was the equivalent of "keep looking." Over two hours now and still can't find the @#$&ing thing.
by: Christopher04/13/2022
The harness was easy enough to install, but the instructions included were inaccurate. It states you need to install it under the dash, where the factory trailer lighting is in the trunk. The video installation does it correctly, but the included instructions do not.
Christopher
4/13/2023
Still works great. Real easy to install.
by: Andrew 06/01/2023
2018 Toyota Highlander
Trailer hitch and wiring kit are working great after a year on our 2018 Toyota Highlander.
by: Ran wire under vehicle01/27/2019
2019 Toyota Highlander
I have a 2019 Highlander and the installation went very well. I bought the Drawtite hitch with the mounting bracket for my wiring plug, so I wanted my wires to go under the vehicle and not through the rear door. Once I removed the trays from the back of the vehicle, there was a rubber plug in the corner that could be removed that allowed access under the vehicle. I decided to use my box knife to cut a slit in the rubber plug. I had to cut my wiring harness across the 4 wires to run them through the rubber plug. I crimped them back together as seen in the photo. I used zip ties under the vehicle and inside the back to clean things up.
Mike L.
1/28/2019
Nice job on the install! I would make one recommendation.. Id use some silicone to seal the hole in the grommet where the wire passes through to prevent moisture or exhaust gasses from entering the passenger cabin.
by: Tim 11/13/2023
Easy install with help of the video! Thank you
by: 2018 Highlander07/10/2022
Trailer Hitch fit perfect. It took me, by myself 30 min to install. The wiring I got directly from Toyota per my vin number. That took about 20 min to install. I'm very happy with my purchase
by: Michael D11/06/2022
Perfect fit. Easy to understand directions. Really easy to install!
Michael D.
11/7/2023
After a year, not a care in the world. Love it!
by: Alfred06/23/2023
It couldn't have been easier. Simple plug-n-play. Instructions were accurate with location of factory connectors. Product was fail proof. Installation was under 30 minutes.
by: Robert10/04/2023
Clean simple installation. Highly recom mend!
by: Tom D09/17/2017
2016 Toyota Highlander
Shipping was prompt. Arrival was without damage. Instructions were clear and easy to follow. Installation time was about an hour as the instructions predicted. The fit was perfect! The qualtiy seems good and the hitch looks good on my vehicle!
Tom D.
9/17/2018
Excellent..no problems!
by: David 08/28/2023
2019 Toyota Highlander
Could not have been easier connecting for my 2019 Highlander XLE AWD. Worked perfectly and very economical!
by: Allen 07/11/2023
Very happy with the ordering and delivery process, the hitch and the price! All in installed cost was under $400 compared to a local garage wanting $895.
by: Jon 05/12/2023
The harness was simply plug and play, easy to install.
The customer service I received was fantastic. Stacey and Emily were incredibly helpful and knowledgeable about the product.
I have already convinced one friend to work with Etrailer, and will not hesitate to recommend them every chance I get.
by: Sean 03/29/2023
Quality of products was good with the exception that the hitch required a lot of extra muscle, clams and 2x4's to get the holes to sign up. Their is an entire page on retailer that talks to this and creative ways to get the hitches to fit. When the hitch says bolt on, I expect it to be a simple bolt on product. The harness comes with everything except the nut you need to ground the wires :-(. I also recommend before cutting the under body plastic per the insdtructions take a look at how yours fit and make only the minimum cuts needed. My driver side only needed a small section removed to fit perfect and the passenger recorded no modifications and went right back in place.
by: Robert J.04/23/2018
2008 Toyota Highlander
This wiring harness fit my 2008 Toyota Highlander Sport perfectly! It's very easy to install, especially if you watch the installation tutorial video. It's literally plug and play. Everything you need comes with it, including the fuse and zip ties to hold everything in place. The only hard part for me was getting under the dash and tucking everything away neatly, but that's because I'm a big guy and there's not much room down there. I ran mine to the outside of the vehicle to the hitch and installed it in a mounting bracket instead of leaving the harness inside the car and pulling it out every time I need to use it. There was an extra hole that had a rubber plug in it near the tail light area where the connector for the harness is. I took the rubber plug out and ran the wiring to the hitch. I filled the hole with silicone caulking on the inside and outside to prevent any water from getting in. I also wrapped all of my connections with electrical tape. The four way has a dust cap to protect the pins from dirt and debris when not in use. I installed it on the hitch using the mounting bracket (item 18144) here: https://www.etrailer.com/p-18144.html . Looks great! I tested my connections and everything works perfectly! Great product, great price, and you save a ton of money on installation by doing it yourself! Thanks, etrailer.com, for the great tutorial and product research!
by: David 06/26/2023
The wire harness worked great, just what I needed.
by: Thomas08/21/2023
Haven’t installed yet but etrailer has never disappointed me over the years. Always deliver quickly. Their products are not junk and are made to last. Great customer service
25
973
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See what our Experts say about this CURT Custom Fit Vehicle Wiring
- Curt Trailer Wiring Harness Amperage Rating for a 2015 Toyota HighlanderThe 30 amp rating on your 2015 Toyota Highlander also likely includes the 12 volt power circuit and/or provisions for a brake controller. Trailer lights only take up a fraction of that and there are no trailer wiring harnesses that draw 30 amps. Curt wiring harness # C56217 has a maximum amperage rating for 3 amps per circuit for stop/turn lights and 6 amps total for tail lights.
view full answer... - Where is Install Harness Location for Curt Trailer Wiring 2020 Lexus RX 350LIt is supposed to be in the area you are pointing to where the tray is removed. Since yours isn't there I would assume it's buried a little further under other tray/interior panels and you would need to dig a little further and see if maybe it settled further away and just out of reach which is pretty common.
view full answer... - Trailer Wiring Harness for a 2015 Toyota Highlander without Factory Tow PackageCurt trailer wiring harness # C56217 is a fit for the 2015 Toyota Highlander models that did not come with the factory tow package and do not have a trailer wiring converter under the dash. I have linked a video showing how it installs. The 10 amp ATC fuse installs in the in line fuse holder that is part of the wiring harness. Using the lid covering the fuse box under the hood find the location of the towing fuse and insert the other 10 amp fuse where indicated. I checked the owners manual...
view full answer... - Can Curt T-Connector Vehicle Wiring Harness C56217 Be Installed In 2021 Lexus RX 350?I would be happy to help! The Curt T-Connector Vehicle Wiring Harness # C56217 you were looking at installs in your 2021 Lexus RX 350 the exact same way as it would get installed in a Toyota Highlander which is why the instruction manual only shows the install being on the Highlander. There is not a specific instruction manual that shows the install in your RX 350, but at the bottom of the included instructions in the 2014+ section that will be what you need to follow. The picture you...
view full answer... - Troubleshooting 4-Pole Factory Wiring Harness on 2008 Toyota HighlanderIf your trailer lights just recently started malfunctioning, I recommend that you start by checking to make sure that you don't have a blown fuse or a bad relay in your 2008 Toyota Highlander. You will want to check all of the fuses and relays that relate to the tow package. If all fuses and relays check out to be fine, I would then check the grounds on both the Highlander and your trailer. You will want to check to make sure that the ground wire is secured tightly to a clean metal surface...
view full answer...
- Will Curt 4-Pole Flat Trailer Connector Power Trailer With Wishbone 4-Way?Yes, you can use the 4-Flat Wiring Harness # C56217 that fits your 2017 Toyota Highlander on a trailer that has a 4-pole with 5 wires. The connector on your trailer is called a wishbone and it simply has two running light circuits (one for each side of the trailer) instead of one, but is absolutely compatible.
view full answer... - Curt Trailer Wiring Harness that Fits 2022 Lexus RX 350 without Tow PackageYes, the Curt trailer wiring harness part # C56217 that you referenced does fit your 2022 Lexus RX 350 that does not have the tow package but does have the hands free liftgate.
view full answer... - Does Curt Trailer Wiring Harness # C56217 Fit 2017 Highlander HybridYes, the Curt trailer wiring harness part # C56217 that you referenced does fit the 2017 Toyota Highlander Hybrid like what you have.
view full answer... - Do I Install a 10 Amp or 30 Amp Fuse for Trailer Lights in the Fuse Box for a 2013 Toyota HighlanderThe 10 amp fuse that is included with the Curt T-Connector Vehicle Wiring Harness part # C56217 will need to be the one that you insert into the # 29 slot. The owner's manual does indeed call for a 30 amp fuse here but that is with the factory converter box, not an aftermarket one. There will not be any problems installing a 10 amp fuse in this location even though the factory calls for a 30 amp.
view full answer... - Troubleshooting Low Voltage at Running Lights Pin with Curt Harness on Toyota Highlander If you installed the Curt T-Connector Vehicle Wiring Harness # C56217 on your Toyota Highlander, I recommend making sure that the white ground wire from the harness is securely attached to a clean, bare metal surface. A weak ground can certainly cause the low voltage you are getting at the connector. The running lights will require more power draw than the other basic light functions, so this would explain why the issue is only apparent with them activated. If the ground wire is securely...
view full answer... - Where is the Trailer Fuse on a 2021 Lexus RX 350?You are looking for the rear tail light fuse on your 2021 RX 350. The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector item # C56217 connects in line with your rear tail lights to power your trailer harness. I have attached a picture of the fuse box cover for your vehicle. The fuse is marked tail and it is 8 down on the right hand side of the diagram.
view full answer...
- Fuse Installation for Curt T-Connector Vehicle Wiring Harness on 2019 Toyota HighlanderThe Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # C56217 which is a fit for a 2019 Toyota Highlander has three fuses; 1 ATC, 1 ATS, and 1 Mini. The ATC fuse goes inside the inline fuse holder on the power wire from the battery to the converter box. The ATS or Mini fuse gets installed into the engine bay fuse box in the "Towing" slot. It can be either depending on your fuse box but more often than not it's the Mini fuse. If you for some reason have another...
view full answer... - Replacement Converter Boxes For Custom Trailer Wiring HarnessesThe first thing I would do is check your wiring installation as the majority of the time, malfunctions occur as a result of improper wiring rather than converter box failure. If you would like to tell me the problem you are having then I would be glad to help. Unfortunately, as the converter box and provided wiring harness are the majority of the Curt T-Connector Vehicle Wiring Harness part # C56217 kit. We do not sell the individual converter box as a replacement part. If we did, it would...
view full answer... - Can Curt Trailer Wiring Harness for 2011 Toyota Highlander Be Grounded Without DrillingIt's not required to drill a hole for the ground with the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # C56217 on a 2011 Toyota Highlander. I have attached a video for you on a newer model which shows a possible factory ground you can use without drilling another hole. If you have found a different one you want to use that is okay as well but it will be up to you as far as what socket is needed for said ground.
view full answer... - Where to Route 4-Way Trailer Connector from Storage Area on a 2008 Toyota HighlanderWhen you are ready to use the trailer wiring harness # C56217, you will just pull the 4-Way end out. Make sure the wires are on the weather stripping at the back of your 2008 Toyota Highlander, not on the latch and close the rear door. The weather stripping will protect the wires. Take a look at the video I have linked to the right. Fast forward to about the 2 minute, 30 second mark to see how this works. To route it through the vehicle you would have to locate a grommet that exits the...
view full answer... - 2009 Toyota Highlander Trailer Wire Harness RecommendationActually the Curt harness part # C56217 that you referenced is the replacement for the older model part # 56034 that you also referenced that is no longer available. With that being said the # C56217 would be the right choice for your 2009 Toyota Highlander and would work well. This harness does use a newer circuit board design than the older model converter boxes. This box uses surface mounted technology which is far superior to the through-hole style that older boxes used. I attached...
view full answer...
- Wiring Harness Recommendation for 2017 Toyota HighlanderTo power your trailer lights, I recommend installing the Curt Wiring Harness with 4-Flat # C56217. This harness includes a converter to combine the separate signals from your 2017 Toyota Highlander. I've added links to a video review and install for you to take a look at.
view full answer... - Fuse Rating to Use with Curt Trailer Wiring Harness that Fits 2008 Toyota HighlanderUse the fuse rating of 10 amps that comes with the Curt harness part # C56217 as that's the circuit protection the harness needs. 30 amps would be way higher than ever needed under normal circumstances for trailer lighting circuits.
view full answer... - How Does Fuse Install in Red Fuse Holder of Curt Trailer Wiring Harness # C56217Pull the cap off of the red fuse holder of what comes with the Curt trailer wiring harness part # C56217 and push the metal feet of the fuse into the slots that you can see in the holder.
view full answer...
- Where are Connection Points to Install Curt Wiring Harness part # C56217 on 2014 Toyota HighlanderThe connection point that is in the rear of your 2014 Toyota Highlander will be on the driver side. You will need to open the tailgate, remove the access panels, scuff panels, trunk floor panels and trays to access the 4-pin connector. There is also another connection point up front on the driver side. It is located underneath the dash on the driver's side between the emergency brake pedal and the brake pedal. I attached installation instructions and a review video of this product for...
view full answer... - Can a 30 Amp Fuse be Used Instead of a 10 Amp on Curt Wiring Harness for 2017 Toyota HighlanderWhat you are likely seeing for the 30 amp circuit is for the 12 volt hot lead for a 7-Way trailer connector. The 10 amp fuse for Curt trailer wiring harness # C56217 applies only to the trailer lights and no other functions. Most OEM systems use a 30 amp circuit for the 12 volt hot lead in a 7-Way but the ratings for the circuits related to the lights will be much lower. You would not use a higher rated fuse with the Curt harness because it would allow a short to overdraw the converter...
view full answer... - Curt Trailer Wiring Harness Install for a 2014 Toyota HighlanderYes, the install process for the Curt harness part # C56217 will be the same on your 2014 as what is shown in the video for the 2015. I also attached a link to a video that shows the same harness being installed on a 2013.
view full answer... - Troubleshootin the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer ConnectorIt would be wrong to say they never go bad, but I am not familiar with one for a 2016 Toyota Highlander that has. This is a plug-in component, it is not hardwired/spliced into the electrical system. I suggest you simply unplug the custom-fit T-connector removing the Curt T-Connector Vehicle Wiring Harness, # C56217 from your system to troubleshoot.
view full answer... - Troubleshooting New Trailer Plug Not Working for 2021 Lexus RX 350I'm not sure what wiring you purchased but if it's anything like the Curt T-Connector # C56217 for a 2021 Lexus RX 350 without the tow package then the system should be working once you get the module and fuse installed. If you aren't seeing power to the fuse then I recommend using your tester on the OEM plug pins to see if you find power anywhere there. If you still can't find any power I recommend taking your vehicle to your local Lexus dealer to have them look at your OEM wiring. It's...
view full answer...
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Info for this part was:
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Mike L
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Jameson C
Expert Research:
Adam R
Expert Research:
Jeffrey L
Installed by:
Jeff D
Video Edited:
Joshua S
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Test Fit:
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Test Fit:
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Joshua
6/12/2023
Works perfect