Curt Custom Fit Vehicle Wiring for your 2013 Toyota RAV4 are available from Installation instructions and reviews for your Toyota Custom Fit Vehicle Wiring. Expert service, and cheapest Custom Fit Vehicle Wiring price guarantee. carries a complete line of Curt products. Order your Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part number C56166 online at or call 800-298-8924 for expert service.

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Curt Custom Fit Vehicle Wiring for the 2013 Toyota RAV4

Curt Custom Fit Vehicle Wiring

(31 reviews)

Code:   C56166



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Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 2013 Toyota RAV4

Quickly and easily install a 4-way trailer connector on your Toyota RAV4 with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.


  • Provides a 4-way flat trailer connector at the back of your Toyota RAV4 to power your trailer's signal lights
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily
    • Locate connection points in rear cargo area
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes a tail light converter to ensure that your Toyota RAV4'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
  • Made in the USA


  • Maximum amperage:
    • Stop/turn lights: 3 amps per circuit
    • Tail lights: 6 amps per circuit
  • Limited 1-year warranty


This custom-fit T-connector plugs into your Toyota RAV4's wiring harness, which is located in your rear cargo area. You will have to remove interior trim paneling to access these connection points. Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery.

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 Toyota RAV4'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 Toyota RAV4 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.

Curt SMT Circuit Boards

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.

56166 CURT T-Connector - Surface Mount Technology - 4 Wire

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

Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.

Video Demo Curt Custom Fit Vehicle Wiring C56166
Curt Custom Fit Vehicle Wiring C56166 Review
Video install trailer wiring 2014 toyota rav4 c56166
Trailer Wiring Harness Installation - 2014 Toyota RAV4

Video Transcript for Curt Custom Fit Vehicle Wiring C56166 Review

Today were going to review part number C56166. This is the Curt T-Connector Vehicle Wiring Harness with the 4-pole flat trailer connector. Now this part number is a custom fit part number. This is designed to fit the Toyota RAV4 and the Toyota Avalon and Avalon Hybrid Vehicles starting in 2013, but I would recommend to go to our fit guide and put in your year and model vehicle and it would let you know if this would work on your vehicle. Now this will provide a 4-way flat trailer connector at the back of your vehicle to power your trailers signal lights. It does connect quickly and easily. You have to locate the connection points which are in the rear cargo area, plug in these t-connectors behind the rear taillights and then you run the power wire to the car battery.

This does include a taillight converter to ensure that your vehicles wiring will match that of your trailer. This powered module converter right here connects directly to the battery to avoid any overloading of your vehicles electrical system. Now this does use the surface mount technology, the SMT technology, it gives you consistent reliable performance. Itll help maximize your trailer light yield and intensity, but producing minimal heat. It also ensures superior operation in rough road conditions. It does come with everything shown on the table here.

Now basically a few specs on this. The max amperage that this harness would take is on the stop and turn lights it would be 3 amps per circuit and on the taillights it would be 6 amps per circuit. Basically when you go to install this, it comes with a nice set of instructions which are very detailed. It has some good pictures of where the connections are. What you would do is take this converter to the back of your vehicle and in the rear cargo area you gain access to your taillights, behind your taillights. What you would do is start on your driver side and use the t-connector here with the yellow wire in it, thats for the driver side.

What youll do is unplug the taillight and then plug these in inaudible 00:01:56 into the taillights. Then what you want to do is the white wire on this side, it has an eyelid on it, you want to get a good clean ground up against the vehicle. If you have a screw there you can use, if not they do include a grounding screw. Then what you want to do is take the other set of t-connectors, the green wire this will go to the passenger side of the vehicle, run this over to the passenger side and then same way, these t-connectors will plug in behind the taillight on the passenger side. Then what youll need to do is this black wire that comes out of the converter is a power wire, this would need to run to the front of the vehicle to where the battery is. Thats why they give you this length of wire. What you will do here is use the included butt connectors to install one end of the wire to there, run the wire all the way to the front of the vehicle.

If you need to use zip ties, they include them here to secure any of the wiring. Take the end that comes out to the front, what youll want to do with this is attach it to this fuse holder. One end goes to the fuse holder using another butt connector. The other end, the other wire on the fuse holder will have the eyelid put on it and then this would connect to the positive side of the battery. Then what youll want to do is pop open the fuse holder. They have an included 10 amp fuse that you would just install in there and then close it into place. Now it also includes this double face piece of tape. What that would be used for is on your converter you can stick this to it and then it adheres this converter in the rear of the car to a good secure place. It also comes with this nice rubber dust cover. What thats for is you can install this onto your 4-way connector that will be at the rear of your vehicle. When youre not plugged into a trailer, you can just put this cap just like that. Put it on the correct way. There we go. You just line that up and itll go right on like that. That should do it for the review of part number C56166, the Curt T-Connector Vehicle Wiring Harness with the 4-pole flat trailer connecter. .

Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C56166

Average Customer Rating:  4.6 out of 5 stars   (31 Customer Reviews)

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 is made using SMT to ensure superior performance.

- C56166

by: Ronald04/01/2013

The harness arrived in good condition and fairly quick, since it is a new item for the 2013 Rav 4. The install is not exactly easy. It took myself and a friend (an Aircraft A&P mechanic) 4 hours to complete. We were being careful not to break any interior plastic which added to the time. My wife did not like the idea of hanging the connector out the hatch so we decided to run it our the bottom next to the spare tire through a rubber grommet ..then sealed the grommet with silicone and mounted the flat connector to the provided are on the hitch. It might be helpful to test the connectors provided with the harness before trying to disconnect the connectors on the vehicle. The vehicle connectors are in a very tight spot and trying to unlock the tab is not easy. Pictures of how to unlock the tab connectors on the instructions would have been helpful. I thought it would be a good idea to teat after the install with a volt/ohm meter. To my surprise, I had 12V at each leg without anything turned on. We then connected the trailer and all worked as expected. We still don't understand it but it works just fine. Some serious magic in that little black box LOL. Ron 73681


That is exactly why we work so hard to have videos of our products. Sometimes a different look can make all the difference in an install. As soon as we have a 2013 RAV 4 come through our shop, we will have wiring videos available on the site.

Patrick B - 04/04/2013


Getting a 2013 rav next week. Any additionall light you can shed on removing plastic pcs. or where you ran hot wire would make me forever in your debt. I am a little bit of a detail frek also.Thanks.Mike

comment by: mike - 04/11/2013


I will pass your question along to Ronald. Keep an eye on this review in case he decides to follow up.

Patrick B - 4/24/2013


Mike,One suggestion I have for removing the plastic interior panels is to purchase a set of nylon pry bars designed for this purpose. I used these from Harbor Freight tools:http:/ and worth every cent!Along with the screws and bolts mentioned in the instructions, there are many plastic retainers that will be pulled straight out to remove. Be careful not to them since the do slide out of their mount brackets.I ran the hot wire to the battery through a rubber plug under the spare tire and under the Rav to the front. There are plenty places to tie wrap along the way forward and secure it. I did run it through a hole in the frame and made sure to use a grommet to assure that it did not chafe and short out.I also ran the 4 way plug through the same rubber plug under the spare and routed it to the tab on the hitch and secured it. All wires were then sealed with silicone on the rubber plug.I hope some of that is a help for you.Ron

comment by: Ron - 04/25/2013


Thanks for the follow up Ronald!

Patrick B - 4/25/2013

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by: Don C.09/25/2014

The 2014 Rav4 hitch and wiring harness arrived in good shape within 3 business days of my order. Installing the hitch was simple and easy (30 to 45 min) with the use of a jack to hold one side while starting the bolts on the opposite side. I did not remove the exhaust as suggested but used a wood block to hold it aside while installing the bolts. Installing the wiring harness is more of a challenge, especially if you have little or no experience. The instructions and few photos are not much help. After removing all the rear panels as instructed you also have to loosen the complete side panels enough to reach inside with your arms and the tools needed. I loosened the driver side rear panel to allow access to the floor of the rear passenger area. This will allow you to eventually feed the hot wire forward. Wear a long sleeve shirt to protect your arms from the sharp edges of the plastic side panels. After making all the connections, I fed the hot wire forward under the inside plastic floor guards for each door on the drivers side. Under the dash (above and to the left of the brake pedal and under the insulation) there is a large rubber grommet around the vehicle main electrical harness. I used a stiff wire to push through the grommet and feed the hot wire to the battery. There was more than enough wire supplied to route the wire this way. Even with my previous experience it took me just over 4 hours to complete the installation. I am very pleased with the product and would recommend "etrailer" to all who read this review. 152980


Good call on where to push power cable through fire wall. You saved us some time. Thanks!

comment by: Harry W - 10/06/2014


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by: CJ09/04/2013

Installed nicely but the instructions were a little vague on where to best mount the module for the RAV4 and where to put the ground screw. I put the module on the flat-ish spot on the driver's side in front of the tail light. I put the ground screw in the 3/4" joint running up the door frame behind the panels and I just used the self-drilling screw to make the hole. The edges of the panels you pull out have sharp spots so be careful to not get little cuts and scrapes. as you're reaching in for the connectors. I ran the power cable inside the RAV4 and pushed it through the big rubber boot under the driver's dash. (using a long springy rod to get string through to pull the wire.) From there it was an easy run to the battery. All in all it wasn't a bad install at all. It took some patience and rereading the instructions a few times to get it done but very doable. Don't rush if something doesn't look quite right because the instructions are correct if a little vague in spots. 98149

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by: Norman J01/25/2015

I ordered this harness to go with the hitch for my 2013 Toyota RAV4. The hitch was simple to install and took about 1/2 hour. The harness took me three hours and the directions were not specific to the 2013 model. Photos showed the connector placement near the tail light assembly but on my vehicle it was located about 8 inches above the light assembly. This required removal or two additional panels. Disconnecting the factory connectors was difficult on the passenger side because the release faces away and space is very tight. A power line needs to be run to the battery and I found this easiest to do along the passenger side. A hole must be drilled through the firewall to route the wire. This kit includes everything you need and it worked very well after installation. I recommend it. 171188

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by: Rich Stro09/25/2013

The Trailer Hitch apparantly had been damaged in shipment because the spacing between the mounting holes was too close by 3/8". I had to use a Hydraulic bottle jack and 4x4 wood block to expand the mounting pads so they wold fit. I think they need to put some foam in the packaging.. so when shipper drop the box it doesn't cause the mounting plates to get closer.. Other than that no problem only took 15 minutes to install 101421

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by: vern06/23/2014

thanks to the guy suggested plastic trim tools from harbor freight they were helpful, drivers side T connector wires need to be longer as would not let me put convertor box in a good place so I extended them. ran battery wire in side vehicle tucked it under plastic door trim and put through firewall where wire bundle and hood latch went through used screwdriver to punch hole and small electricians fish tape to feed wire through. overall very pleased with kit and instructions. installed on 2014 Toyota rav4. if you are not used to working on cars/mechanics it may be a bit much to do. 137253

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by: Harry W.10/07/2014

If you take your time, read the instructions carefully, watch the Tow Ready video and enlist the help of a friend installing the hitch and wiring was very straight forward. The hitch takes about a half hour and the wiring takes about 3 hours. The good news is the wiring actually worked (of course it did), and the hitch is a perfect match (with a little tweaking lining up the mounting holes) on my new Rav4. I will repeat a tip that I read from another reviewer; the rubber grommet hole through the firewall is located upper left behind the brake pedal. Knowing this saved a lot of time. 155055

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by: Lee C.03/20/2014

Last time I purchased from etrailer was 9 years ago until this time and as I remember all was 5 star back then also. As usual an excellent online buying experience from Product arrived in 3 working days and was the correct hitch plus the wiring harness for my 2014 Rav4. High quality products which makes even installing a trailer hitch no problem. I did think I should have received the Curt receiver hitch plug as I have on other trailer hitches. The cost to ship a plug now costs less than the shipping. The only bummer on the whole deal. 121396

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by: TC05/21/2014

2014, RAV4 just installed, checks out ok. Took while removing interior molding and running wire to battery. Wire harness was EZ with the T-connectors. Even though website has much info on installation, I still called asking for help, customer service was helpful and understanding. Just wish that the power converter was designed to be more accessible/replaceable in the event it should ever malfunction. 131666

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by: Brent Frazier03/12/2014

Hitch installed in less than 15 minutes with another pair of hands. The electrical harness was a bear, though. The connectors were difficult to disconnect because of the tight space. Went well from there, though running the wire to the battery was interesting. I ran the wire through a hole punched in one of the tire well drain plugs, then sealed with silicone. Electrical took about 3 hours. Works fine. 120418

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by: Larry R.03/07/2015

This product was exactly as described in the product description and the installation was easy. I watched the video for the muffler hanger release to drop the muffler and a little CRC did the trick. I installed the trailer hitch on a 2014 RAV4 and the product value is exceptional, a very well constructed hitch with pleanty of towing capacity. I would recommend this hitch to everyone. 177404

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by: Steve01/17/2014

Installed this product on a 2013 Toyota Rav4. This wound up being one of the more enjoyable parts of adding a trailer hitch to my new car. The unit was pre wired with Toyota connectors so all I had to do was plug it in. Fortunately, the interior panels that needed to be removed were no problem on the Rav4. Other vehicles may be more problematic but it works as advertised 114093

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by: Howard K.03/17/2015

I could'nt be happier. Once again, etrailer delivers nothing but quality and ease of installation and excellent product. I was not looking forward to working on my Rav4, as everything else I did with it was difficult at best, but etrailer made it EASY and Painless! THEY made it simple and stress free. Thanks! You rock! 179039

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by: Randy R09/23/2014

The light kit is well made and fit the vehicle well. I would recommend going to u-tube and watch a video before you start the installation. The worst part is running a hot wire to the battery. There are no hot wires in the back of the car to tie in to, so be careful how you run a wire to the front. 152626

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by: John R.10/22/2014

Perfect fit and the timing of receiving was really great. The product was in good condition when received. I am completely satisfied and I will order again when the time comes. Great service, product and price. Your web site is very helpful in choosing and installation of the product I purchased too. 157346

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by: June B.02/24/2014

Received hitch in a few days. Fit perfectly. The recommendations I received from Katie D were exactly what I needed to make my decision. Product arrived in perfect condition. Very pleased with product and service. Have recommended your site to someone else who needs a hitch. Thanks for your help. 117373

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by: Donald Drouin09/04/2013

My box was delivered and the top of the box was opened and then re-taped by someone. I asked the UPS guy if all the parts were there and he said "I hope so". I have not had the time to go through the box but I will at my earliest convience. 98167

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by: Randy P.09/12/2014

Got the hitch & wiring harness kit in very short order. Put hitch on in half hour, wiring took about three hours. Keep in mind I'm 72 years young, so I'm very happy with E-Trailer products and instructions. Thank you E-Trailer !! 150874

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by: Gene F.03/06/2014

This takes the longest time to do because on the RAV 4 you have to remove the rear side panels. The left side wires could be longer so you can mount the convertor box in spare tire compartment. I spliced longer wires on mine. 118610

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by: Patrick04/13/2013

Super fast service. This is the way businesses are suppose to be run. Ordered on a Sunday delivered and installed by Thursday. Everything was there and in perfect shape. Will be ordering more. Thank you. 75733

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by: Jim MIko04/02/2013

Fit my 2013 RAV 4 as advertised. Easy to install except for the line to the battery, that was a pain. I ran the line from the battery through the interior of the car as it is more protected. 73807

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by: Jeff B04/29/2014

This wiring harness was actually surprisingly easy to install. The directions were very clear about how to properly and safely connect the wires to the tail lights and to the battery. 128164

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by: Jeff R.12/17/2014

Two thumbs up... clear directions. I had no issue installing even after a hard Christmas party the night before... installed without issues, through one blood-shot eye.. 165828

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by: Daren R.01/28/2015

Ordered a hitch for my wifes Rav4 so she can pull her little boat. Shipping was fast and it took all of about 20 min. to install. I'll let you know how the wiring goes. 171619

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by: Manny B.04/14/2014

Hitch construction and finish look great. Installation was a snap, as advertised. I did it alone with the Rav4 up on ramps. Haven't towed yet but expect no problems. 124948

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by: J. Ledoux03/06/2014

This is my second order curt T connector set . The first one easy I and this second one should be the same. the shipping good and thank you for your concern. 118603

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by: Scot S08/25/2013

Save alot of time .. Better then do-it selfer and piecing it together 96831


Which hitch and wiring kit do I need for a 2014 Rav4. The hitch will be a class II.

comment by: Larry - 03/20/2014


I have added a link to all the hitches that will fit a 2014 RAV4. There is only one Class II 1-1/4 hitch offered, from Curt. Most of the hitches offered are Class III 2 inch hitches. I would strongly encourage you to consider a Class III, 2 inch hitch instead of a Class II. There are far more options as far as bike racks and cargo carriers for 2 inch hitches. Even if you will not ever need the towing capacity, a Class III 2 inch hitch will be more versatile. Curt offers a plug-in wiring harness, part # C56166
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
. You will need to run 1 wire all the way up to the battery and use the crimp connectors to make the connections. This separate power wire enables the entire trailer wiring system to isolate the power draw off of the vehicle.

Patrick B - 3/21/2014

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by: Robert Prokopchak07/28/2014

Was thankful you had a on line ability to watch how to put in thank you would never been able to find the connection to hook up to with out it. 143238

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by: Bryan05/19/2014

Once you figure out how the panels come apart it was very easy. Just have to take your time so you don't break any of the interior body panels. 131290

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by: GQ03/17/2015

More difficult than hitch but very nice when done 179147

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by: Steve11/11/2014

Quality product time consuming install 160376


Ask the Experts about this Curt Custom Fit Vehicle Wiring
Do you have a question about this Custom Fit Vehicle Wiring?

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  • The Curt Easy Mount Bracket for 2-inch hitches, part # C58000, provides a mounting surface for both flat (4- or 5-way) and round (6- or 7-way) vehicle side trailer connectors. It is made of durable powder-coated steel and includes stainless steel hardware to secure it to a 2-inch hitch, such as the Curt # C13149. (This Class III hitch carries 525-lb tongue weight and 3500-lb gross towing weight ratings; 4000-lb GTW with weight distribution.) The one end of the Curt bracket mounts to...
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  • Is Drilling Required For the Installation of the Curt Wiring Harness # C56166 On 2013 Toyota RAV4
  • Based on my research, the wiring harness you would need for your 2013 Toyota RAV4 is the Curt T-Connector # C56166. The Curt Wiring Harness # C55106 you referenced is intended for a 2007-2011 Honda CR-V. I have provided a link to the installation instructions for this particular harness. The wiring harness will not require any drilling as the connector is installed in the inner trim area of your vehicles rear cargo area, however you will need to shoot in a self-tapping screw during the...
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  • Hitch Setup Recommendation for a 2013 Toyota Rav4 Towing 2,000-3,000 lb Trailer
  • For a hitch I would recommend you get a Draw-Tite Trailer Hitch # 75766. This is a Class III hitch that would have more than enough capacity to tow your 2,000-3,000 lb trailer. Instructions attached. Next, you will need a ball mount and hitch ball, I would recommend you get the Ball Mount Kit # 989900. For wiring you would want the Curt Custom Fit Vehicle Wiring # C56166. This will provide you with a 4-way to control the tail light functions of your taillights. I attached...
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  • Tips on Routing Trailer Wiring Harness Power Wire on a 2014 Toyota RAV4
  • Running the power wire to the battery when installing Curt trailer wiring harness # C56166 on your 2014 Toyota RAV4 is not all that difficult, it can just take some time depending on how you want to route the wire. How much time it takes varies. There are a few different methods to route the wire. I have included a link to our help article that covers tips on routing the power wire. It must be attached to the battery, no other power source will do. This is because the harness has only...
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  • Curt Trailer Hitch and Wiring Harness for a 2008 Toyota RAV4
  • Starting with a trailer hitch the Curt hitch for your 2008 Toyota RAV4 is # C13149. This is a 2 inch hitch rated for 525 pounds tongue weight and 3,500 pounds gross trailer weight. But you will want to consult the vehicle owners manual to determine the capacities of the vehicle. Whichever is lower, the hitch or vehicle, is the capacity you need to go by. I have linked the instructions and a video showing installation of this hitch for you. For a Curt trailer wiring harness, use # C56165....
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  • Purpose of Center Bracket on Hidden Hitch Class III Trailer Hitch # 87631 for 2014 Toyota Rav4
  • You are exactly correct that the flat bracket included on the Hidden Hitch Class III Trailer Hitch # 87631 is intended to allow convenient mounting of the connector for a trailer wiring harness. This feature can save the added expense of an add-on bracket. This bracket is intended to accept a trailer connector like the Hopkins # 37185 that provides both 7-way and 4-pole trailer connections - great if you will tow multiple trailers with differing electrical wiring. For reference, please...
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  • What Size Wire Gauge Should be Used to Extend the Power Wire for Trailer Wiring Harness # C56166
  • Typically, routing the power wire on the inside of the vehicle uses up more wire than routing it underneath. But either way you still need some extra wire so lets look at what you will need. You could get away with using a larger gauge, especially over such a short distance. But I would go ahead with some 12 gauge wire like # 12-1-1, sold in increments of 1 foot.
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  • Trailer Hitch Recommendation for 2013 Toyota Avalon
  • The Draw-Tite Class II 1-1/4-Inch Trailer Hitch # 36540 is a compatible fit for your 2013 Toyota Avalon. While the receiver tube will be visible beneath your bumper, it should not protrude. There is no welding required to install this item, but some drilling may be required as well as the temporary lowering of the exhaust. I have provided links to the installation instructions for the hitch. I have also included a link to our FAQ page on trailer hitches. If you need trailer wiring...
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  • Where Does Curt Trailer Wiring Harness Install on a 2014 Toyota RAV4
  • The T-connectors are the ones on the harness # C56166 since they Tee into the vehicle wiring. Find the wiring to the tail lights on your 2014 Toyota RAV4. There will be a connector that you will unplug. Then plug the forward connector into the matching input on the harness, and the output from the harness back into the connector that leads to the tail light. We do not have a video for that particular harness but we do have one on another harness that fits your RAV4 which I have linked...
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  • Trailer Wiring Harness and Hitch Recommendation for a 2014 Toyota Rav4
  • Actually both of the trailer wiring harness options that are available for your 2014 Toyota RAV4 use converters. It's just that the converter in the Tow Ready wiring harness part # 118578 doesn't look like a traditional converter like the Curt Harness part # C56166 that you referenced. Between the two I would go with the Tow Ready as it has a higher amperage rating at Stop/turn lights: 4.2 amps per circuit Tail lights: 7.5 amps per circuit Whereas the Curt has Stop/turn lights:...
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  • Troubleshooting Trailer Lights Not Functioning When Tow Vehicle Headlights Are Turned On
  • Since I do not know what tow vehicle or wiring harness you have I will try to give you the best general guidance I can. Usually the best way to troubleshoot your wiring issue is to disconnect the trailer from the truck's 4-pole and test each one individually. However, based on your description of the problem - all trailer lights working until you turn on the vehicle headlights - there is one most-likely cause that should be easy to correct. This type of issue is typically related to...
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  • Video for Installing Trailer Wiring Harness on a 2013 Toyota RAV4
  • I have included a link to a video that shows installation of trailer wiring harness # 118578. It installs the same way as Curt harness # C56166 on your 2013 Toyota RAV4. Both harnesses just plug in line with the vehicle tail light wiring. A direct connection to the battery is required for both as well. I have also included a link to our help article to the right with tips on routing the power wire.
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  • Routing the Power Wire of a Trailer Wiring Harness in a 2013 Toyota Rav4 Options
  • I have a solution that doesn't involve routing a power wire under your 2013 Toyota RAV4, but I cannot recommend you route the power wire to an accessory power circuit like a cigarette lighter since that would void the warranty of the harness. You can route the power wire through the interior of the vehicle and then through a hole in the firewall to get it out into the engine compartment so that it can be ran to the vehicle's battery. I attached an FAQ that covers routing power wires for...
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  • Recommended Trailer Wiring Harness for 2014 Toyota Rav 4
  • Although the Curt # C56166 and the Tow Ready # 118578 perform the same function and would install in the same manner, the Tow Ready model has a slightly higher amperage rating and is a bit less expensive. The higher rating wouldn't really matter unless your trailer has many lamps on it, but there's no good reason not to go with the lesser priced Tow Ready unit. If you click the provided links, you can see the installation details and an install video.
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Toyota RAV4 Accessories

Info for this part was:

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