Call at 800-298-8924 for expert service. We are your Lexus Wiring experts, and offer a lowest price guarantee. carries a complete line of Curt products for your Lexus LS 400 1990. Curt Upgraded Circuit Protected Tail Light w Converter Hardwire Kit - 4 Pole End (Includes Tester) part 56146KIT from Curt can be ordered online at Complete Wiring installation instructions and technical support.
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Custom-Fit-Vehicle-Wiring > 1990 > Lexus > LS 400

Curt Wiring for the 1990 Lexus LS 400

Curt Wiring

(220 reviews)

Code:   56146KIT



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Shipping Weight: 1.62 pounds


Curt Upgraded Circuit Protected Tail Light w Converter Hardwire Kit - 4 Pole End (Includes Tester) - 1990 Lexus LS 400


  • Adapts separate turn and stop lights (3-wire system) to a (2-wire system) on trailer
  • Works with domestic and import Lexus LS 400s
  • Virtually eliminates draw on Lexus LS 400 tail light circuit
  • No HD flasher required
  • Battery powered and circuit protected
  • Surface Mount Technology (SMT)
  • Does work with Lexus LS 400s that have LED tail lights
    • Will work with trailers that have LED tail lights
  • Includes circuit tester and (4) Quick splices to aid in installation
    • Also includes 4-pole trailer connector cover


  • Wire pigtails measure 17" long
  • 4-pole trailer connector is 58" long from converter box
  • Amperage allowance
    • 3.0 amps per turn/brake
    • 6.0 amps for taillight function

Warning: Overloading circuit can cause fires. Do not exceed lower of towing manufacturer rating

Read Lexus LS 400's owners manual and instruction sheet for additional information.

Kit Includes:

  • Circuit protected tail light converter (56146)
  • Powered Converter Wiring Kit (55151)
  • Circuit tester
    • To help find wires behind Lexus LS 400 tail lights
  • (4) Quick splice wiring connectors
    • Makes tapping into wires quick and easy
  • Integrated 4 Pole Cover
    • Protects 4-pole trailer connector from the elements and reduces dirt, debris and corrosion for trouble-free use

Surface Mount Technology (SMT) is a method for constructing electrical circuits where components are mounted onto the surface of printed circuit boards.

56146 Curt Circuit Protected Powered Converter w/ SMT

55151 Powered Converter Wiring Kit

Video of Curt Upgraded Circuit Protected Tail Light w Converter Hardwire Kit - 4 Pole End (Includes Tester)

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

Video Transcript for Curt Wiring 56146KIT Review

Today, we're going to review part number 56146KIT. This is the Curt Upgraded Circuit Protected Power Converter with the wiring kit. This kit will include everything shown here on the table. It includes the circuit protected taillight converter. It is a power converter. It includes the wiring kit, and it'll even include a circuit tester to help you find the correct wires behind your vehicle taillights to connect this all to. This will adapt separate turn and stop lights which are on the vehicle it's usually a 3-wire system to a trailer that usually has a 2-wire system.

This will work with domestic and import vehicles. It'll virtually eliminate any draw on your vehicle taillight circuit. There is no heavy duty flasher required when using this. Now, this converter is battery-powered. You run the wire to your battery.

It is also circuit-protected. It does use the surface mount technology. Now, this will work with vehicles that have LED taillights, and it will work with trailers that have LED taillights. It does include everything shown here on the table. Basically, this converter, you notice it has a length of wire, usually about 58 inches long. Then it has a 4-way on the end of it.

This is what'll run out the back of your vehicle to plug into your trailer, and it will include this dust cover, which you'll be able to just install over there, so when you're not using the 4-way, what you can basically do is just pop this cover on it, and it protects the terminals from any damage and from the elements. It will come with this piece of 2-way tape, or two-face . double-sided tape that you can just put on here to attach your converter to a place so it doesn't move around. Then your wiring, you'll notice, it comes with the 4 quick-splice connectors for connecting your wires, and it comes with some cable ties to take up any slack in your wiring. Basically, this set of wires, it has the red, yellow, brown, and white. You run this to the driver side.

The white would be your ground, so you can use the included ground screw to ground it. The others would be tapped into your circuit, and then you run the green wire over to your passenger side, and that would be tapped into your passenger side taillights. The extra black wire is the power wire that would need to run to your battery to power this converter. The way you would connect that is you take your length of wire right here, and you'll take one of your butt connectors. Attach it to this power wire and then run it to the end of one of this wires here. Then you'll run this length of wire it's about 20 feet of wire they give you run this up to the front towards the battery. You don't want to connect this to the battery directly. What you want to do is put another butt connector on here. Then you'll connect the in-line fuse holder to this. Then on the other end of the in-line fuse holder, you'll take this ring connector and put it on there, and then this would connect to the positive side of your battery. Then before you use your wiring harness, what you want to do is open the in-line fuse holder. Take the included 10 amp fuse. Go ahead and install that into the fuse holder. Put your cap on there, and then you'd be all ready to go. Again, we mentioned it includes the circuit tester. What that's for is when you go to hook up these wires to your wiring harness, you want to use this circuit tester to test it, to make sure you're connecting up the right wires. That should do it for the review on part number 56146KIT. This is the Curt Upgraded Circuit Protected Power Converter with the wiring kit. .

Customer Reviews

Curt Upgraded Circuit Protected Tail Light w Converter Hardwire Kit - 4 Pole End (Includes Tester) - 56146KIT

Average Customer Rating:  4.7 out of 5 stars   (220 Customer Reviews)

- 56146KIT

by: Greg F.05/27/2014

Installing this kit in my 2010 Jetta Sportwagen (TDI) was not as easy as I hoped, but ultimately I was able to pull it off. I would have had much less confidence without the video. Routing the power wire from the spare tire well to the battery was the most time consuming part of the install. In the end the power wire ended up being juuuuuust the right length, but I used every inch of it. For most of the run I was able to rest the wire above various pieces of plastic splashguard (while still using plenty of zip ties), so it has some extra protection from the elements. Getting all the quick-connect splices done for the driver's side lights was tough. I didn't quite understand why in the video they didn't just feed the wires for the passenger side blinker, ground, and power from the lights to the trunk, which would put the converter box where it needs to be from the very start. Instead they recommend feeding the wires the opposite direction—from the trunk to the lights—and then you have to cram the converter box through the trim piece that has not been removed after connections are made. I did it that way too, thinking that maybe things would be less cluttered during the critical splicing step. It worked out okay, but if I did it again I'd probably do as I described and avoid having to shove the converter box through the trim. When I did that, one of the pieces of trim hardware popped off and disappeared somewhere below. One step I recommend adding whichever way you do it would be to peel the white ground wire away from the three it's attached to before feeding things from the trunk to the driver's side lights (or whichever direction you choose), which allows you to more easily connect the ground. As for the three splices on the driver's side, there is no play in the wires, the trim wants to spring back closed all the while, and for a regular two-handed guy who doesn't have much experience with DC wiring it was tricky. I did get all the connections made in the end, and I'm getting the right signals and voltage on all the connectors. I'm sure the video saved me hours and helped me avoid a lot of mistakes. 132574

- 56146KIT

by: Leonard K.04/26/2014

I had the hitch and wiring delivered to a company that specialized and supposedly installed a lot of hitches. They have numerous locations, but only one did all of the hitch installs, about 15 miles from home. I brought my vehicle there so they could check that there would be no problems with what was shipped directly to their business, and I was assured that there would be no problems. They also gave me a firm estimate of two hours to complete the job. It turned out that no-one in the place knew how to do the electrical so the wiring was given back to me but they would not back down from the original price quote even though it was not finished and they recommended I go to another shop, not one of their shops, that REALLY works with hitches and they could do the electrical. Simply overpaying for the incomplete work plus "shop supplies" and taxes for labor (unusual in my state) was better than giving myself a heart attack. I've been cheated a lot when I was in business and always fought back and I treated vendors and customers with respect. I'm almost 80 now and I have a different outlook. I did go to the REAL trailer hitch installer that they recommended and they completed the wiring at a fair price, even though it was supposed to be done ad part of the original estimate at the first shop. None of this has anything to do with your product and "Your Product Review". I'll submit a photo of the car with the hitch installed. It does look like it belongs on the car and is not at all a distraction from the cars looks. Great product. You guys are great by delivering what was promised. The car is only a week old. You did great, and I love the finished installation if it doesn't fall off by being installed incorrectly. 127504

- 56146KIT

by: Twainer06/16/2014

So I missed the part about mounting the electronic pak on the driver's side. The wire for the passenger side signal is about 6 feet longer than the rest because it needs to reach over there. Don't make my mistake and mount the kit on the passenger side. It was a very simple and sweet installation, everything you need is in the kit and it fits almost anywhere behind the driver's side tail light. The installation video wants you to run the power wire outside and under the car--don't do that. I have an '05 civic and I popped the door channel trims and ran the power wire from the trunk thru the door channels and up behind the glove box. I used a sharpened coat hanger wire to carefully pierce the rubber grommet that surrounds the wire bundle from the ECU, gaining access to the engine bay just behind the steering rack on the passenger side. The battery is just forward of the strut tower from there and its easy to secure the new power wire. The kit works like a charm and its invisible with the wire tucked under the spare tire area. 135720


Its worked really well since I installed it. I tuck the cable under the carpet when not used and you never think about itvery nice when using the trailer though.

Twainer - 06/16/2015


- 56146KIT

by: David S.07/25/2014

I bought this to install on our 2005 Subaru Legacy. The installation was pretty easy. The videos here on the website were very helpful to explain the installation process, as were the instructions that came with the harness kit. The harness just connects to the wiring for the tail lights on the back of the car and then you have to connect the control box to the battery, as well as the ground wire. The kit seems to be made very well. The blue splicing connectors are very easy to use and the circuit testor that came with the kit was quite useful. 142916


It has worked great. No problems. Its still going strong. We drove cross country to California and it worked just fine.

David S - 07/25/2015


- 56146KIT

by: John D05/23/2014

Wow....not an easy project for the Cadillac SRX. You have to do a lot of disassembly in the back to get to the wires and then try to get to the nuts holding the lights...good times. The directions were pretty good until I got to how to wire it up. Do I splice the wire, how does this work? Didn't know so I quit and put the components back together. Started at 8am and quit at 11am and I didn't even get the wiring hooked up. After I got it all put back together, I got a call from Tech Support telling me the wires don't get cut rather the blue splice connectors (splicing got me) are there for you to just put the wire in and crimp it down. I'd change that name and call them wire run-throughs or power connectors. When you say splice, I think I need to splice the wire. Good thing I didn't and quit. You should give yourself all day to get this project done if you haven't done one of these before. I have hooked up wiring on a dodge ram, pacifica and chevy silverado and were dead simple. This is not. A smart engineer out there needs to come up with an adapter that would use the plug from the taillight and allow the user to unplug the taillight, plug into the adapter and the adapter into the light. I think if you complete this project, you should get some kind of degree from ITT for wiring. 132100

- 56146KIT

by: Greg H.07/15/2013

I purchased this unit for my solara 05' and works very well. if you know how to locate your existing source of signals your fine. I mounted the control behind the plastic trim just inside the trunk where there were plenty of room. locating the turn signal wires and brake signals was not so bad. the contol was identifed very well for wire color and what it did. you pick up a completely seperate main power source from battery so you dont burden your existing circuits or fuses. I routed the hot wire under my car with the fuel lines which made it simple, used a spare tubing path that was empty. I get full lights, bright and worked first try. 89658


Its great, I am planning on putting another one on my old bronco as well.

Greg H - 07/22/2014


- 56146KIT

by: Baileyrock05/27/2014

The kit is fantastic and the harness installation video made things so Easy it was the simplest install I've ever done for about anything! Awesome info, support and products! Finding all the great info and How to videos on your site is what sold me to purchase from your company. You will Always be my first stop from now on!!!! Excellent !!! A++++ 132733


Best investment Ive made for that vehicle! Works excellent and you will always be 1 when I look to need another hitch.

Baileyrock - 05/28/2015


- 56146KIT

by: Martijn S.05/10/2013

Overall it looks like this harness will work. A couple of points that are good to know. Splicing into the existing drivers side wires is extremely tedious work standing in a very awkward position just outside the tail gate. The scotch splicers just barely fit clustered together since there is no slack in the car wiring itself. There is very little guidance given on how to run the power line to the battery. A make/model specific schematic showing suggested attachment points would really help. The power tester that comes with the kit doesn't work by attaching to the little posts as shown in the video. Perhaps I'm doing something wrong, but compared to the video this project seems much more difficult and time consuming. Allow for plenty of time and don't rush this project. If you can get the car on jacks it will make running the power wire much easier. Definite room for improvement, but the product does work if installed correctly. 79777

- 56146KIT

by: LEN L.07/16/2014

I was very pleased with the product and the packaging. Since my vehicle was previously wired for a converter, I simply removed the fuse and tapped into the existing wiring, re-installed the new converter and cable tied the wires and converter in place of the old one. Pictures included. By the way, I will be 81 this coming September. 141476

- 56146KIT

by: Ina Scheisehausen09/18/2013

The kit arrived with everything one would need to do an OK installation, provided your car was only two feet wide. The signal input wire for the right turn signal was very, very short. So short that I had to solder in a two foot extension to get it to reach accross my VW Golf (Mk6). The power wire was significantly larger than the unit's power wire and the fuse holder to which it must connect, it also came with butt connectors and no heat shrink or tape for strain relief. I ended up soldering and heatshrinking all power connection because it's just not worth having a hot wire flopping around the car to save me 5 minutes of work. Butt connectors fail. Always. I got this kit because it was half the price of comparable kits (still a ridiculous price for $3.72 worth of transistors and diodes), so I knew it would take some extra work. So far, I got what I paid for, nothing unexpected. Serviceable. 100412

- 56146KIT

by: Steve W.08/27/2014

Product worked fine. The Right Rear turn signal lead wire was approx. 4' too short. FYI, for my 2013 Ford CMAX, the 12volt battery is in the rear, and not in the front of the vehicle. Therefore I didn't need all the Black Power wire that was provided. 148858


Great product. Easy to install, and reliable. It appears that from the reviews a little more wire length would satisfy a lot of your customers.

Steve W - 08/31/2015


- 56146KIT

by: Anthony05/22/2012

This part gets the job done at a fair price, and with ease. The included voltage tester makes finding the proper wires a breeze, and the instructional video made the rest of the install a no-brainer. It was my first electrical project of any sort, nonetheless on a car, and I was done in less than a couple hours; including taking apart my trunk and putting it back together. Only thing I would change is using a longer wire to go from the module to the battery - the included wire doesn't have a lot to spare, and took a couple tries to make it all the way to the battery without having to add any wire. Not a real problem, but a little more length would have been a luxury. In the end, it works, and it's pretty easy to make it look professional enough that people could think the car came equipped with this from the factory. Good deal if you ask me. 41316

- 56146KIT

by: John H.07/08/2014

The wiring kit worked perfectly. Our tech was looking for one for our service van and mentioned he couldn't find one that was compatible to the Sprinter. I told him I would check and they had several choices. Same experience every time. I highly recommend 139912


We are still pleased with the product! Thanks for the follow up.

John H - 07/09/2015


- 56146KIT

by: Mac McCoy09/19/2014

I bought this item to put on a 2003 land rover discovery II. Land rovers are notorious for adding things like this on. Thru the dealer it would have been well over $200.00. Product works well and had all the necessary parts for installation. My one point of advice if installing on a land rover is the ground. After installing per direction the unit failed to work and after talking with Bill in tech advice we both agreed it was the ground. The unit comes with a self starting sheet metal screw to ground it. Since you have to run the hot wire all the way up to the battery save yourself some time and just run a ground wire at the same time. Customer service and tech services were above and beyond and I would certainly buy here again as well as recommend. 152129

- 56146KIT

by: Mike K05/12/2015

I installed this circuit isolating wiring module on my 2005 Mercedes ML500 this afternoon. I chose this module after watching the etrailer YouTube video of the installation in a 2003 ML350. For me the most time consuming part of the installation was routing the black power wire from the battery positive terminal to the module. I started at the battery, routed the wire across the engine bay at the top of the firewall and found it easier to route the wire down then back to the module. It took me a little longer because I didn't jack up the SUV. It's tight but there's room to safely route the wire up and out of harms way without lifting the vehicle. All in all I'd have to call this a very, very simple installation. 192280

- 56146KIT

by: Bob10/19/2013

Easy to install and works conveniently. If you need to operate a standard four wire trailer light system from a vehicle that uses the dual bulb, six wire system, this makes life easy! 104400


Worked fine and still does. . .all good!

Bob - 10/20/2014


- 56146KIT

by: Frank Laj04/29/2014

On time with the right product. Not only that but they have a tutorial on utube describing how to install it. 128046


Still very pleased with the way that product installed and functions.

Frank L - 05/05/2015


- 56146KIT

by: Kathy C06/27/2014

Works like a charm on my 2013 Toyota Prius , though it was a chore compared to the T-one connector by Tow Ready I installed on a previously owned Toyota Prius. Tow-Ready really needs to make that product for this year of Prius! Some tips- look up Ted K's install review of this on a Toyota Prius 2013, he told you which wire color is what light and how to remove panels access the light wires. The only thing I'd add is once you get to hooking it up and testing with the trailer lights, don't forget the last step, putting the fuse into the fuse holder! I had a short moment of disappointment before I realized I needed to do one more thing! Ta-dah! 138056

- 56146KIT

by: Marvin K05/16/2014

I received my order in 3 days and installed it in about an hour and works great. I ordered item 56146kit. A great product. 130963


It has worked just geat

Marvin K - 05/16/2015


- 56146KIT

by: Ted C12/23/2014

Just installed this harness (along with a hitch) on my 2013 BMW X3. Because I wanted to hide the wiring, I took out the two plastic bins on the sides in the rear to access the wiring and make the runs smooth. Everything went well - it was easier because the BMW has the battery in the rear, so no long run to the front for power. Everything necessary was included - handy to get the test light as well. Total times was almost 2 hours, but that was mostly doing the cosmetics to hide the wiring as well as the testing to find the right wires...Sahme on BMW for not selling their own wiring harness without buying a whole hitch for $700! 166698

- 56146KIT

by: soccerdad03/02/2013

Easy installation on the 2004 X3 3.0i. Very high quality kit. I simply followed the excellent video for the X3 also on this site at It installed just as explained and the adapter works perfectly. Tip: Make sure you have a good wire crimp tool like the one used in the video. Don't use pliers or the ones on the cheap flat stripper tool. You can get a set for about $10 at Lowe's or Home Depot. It will make all the difference. I am very happy with etrailer, great products, reasonable prices and great service. You can't go wrong. 68482

- 56146KIT

by: Scotty too Hotty03/09/2014

I have bought many products in the past hitches and harnesses. Stuff is right, never needs fabrication and is top quality material. I only wish they would add some extra solder less connectors so when you mess up you don't have to go to parts store. Harness kit comes with 12v tester great addition since I last ordered. AAAA++++ plan on haulin my new 2014 Carolina Skiff with my 1998 Impreza Outback 119977

- 56146KIT

by: Al05/11/2014

Super fast processing. Got my wiring kit way before expected. 129961


Its working just fine... flawlessly

Al - 05/11/2015


- 56146KIT

by: dg11/25/2011

The Jetta Sportwagen (2010-2011 confirmed, may be other years) has modulating taillights. Other Curt adapters may work. Figuring out the signals with modulating lighting can be painful. This is what works for 2010-2011 Jetta Sportwagen: Driver's side: Gray / Black (pin 1): Tail Light Black / Red (pin 2): Brake Brown (pin 3): Ground Black / White (pin 4): Left Turn Black / Blue (pin 5): Reverse Passenger's side: Gray / Black (pin 1): Tail Light Black / Purple (pin 2): Brake Brown (pin 3): Ground Black / Green (pin 4): Right Turn Black / Blue (pin 5): Reverse 27373

- 56146KIT

by: Harry S.07/01/2013

Product was only a minor challenge to install on Lexus LS due to some difficulty in routing the power wire from the battery to the trunk. Found a rubber grommet under tail light that easily punctured and then sealed with silicone for the power wire. LED tail and brake wires on this car are very small - half the guage of the turn signal wires - so the quick clips took extra care to line up correctly. I have heard tales of the LED wires being cut completely thru by the splice, so care should be exercised to be sure the wiring is lined up properly. Otherwise, great product! 86943

- 56146KIT

by: Jimmy L01/23/2014

Easy install. 114540


Dear Patrick, Everything is working like a charm!! Thanks.

Jimmy L - 01/23/2015


- 56146KIT

by: Nathan Hetcel01/25/2014

Let me start off by saying that shipping through etrailer is excellent, everything that I've ever ordered through this company has been shipped within 15 minutes of when I placed the order, which Is outstanding. Also, the products that I've ordered have been defect free, and meet every standards that I had, and then some! The wiring for my 2001 Lincoln Town Car came with perfect instructions, and I got it installed by myself in under an hour. Thank you etrailer for having everything I need, having good work ethics, and excellent shipping! Don't ever change. (: 114742

- 56146KIT

by: Alan03/30/2013

My wiring in my 1998 mazda( ranger) b4000 could not handle all the new lights from my new tent camper so I went on line to find a converter that was powered straight from the battery and found kit 56146 which works perfectly now. All my lights work and installation was a snap, I encased the battery wire in flexible tubing for extra safety. Every thing else I needed was in the kit, thanks to a quick deliver I got to go camping on time for Grandsons spring break safely. This kit is fused at the battery and is very safe in case of shorts or overloads. Al 73418

- 56146KIT

by: joel09/24/2014

The wiring took much longer than the install of the hitch (removal of trim to hide the power wire, debating where to route the wires & how to get them from inside the car to outside to the battery). The part about the stop signal (if using converter as powered for 2-wire system the red wire must be grounded) was a little confusing. I don't know if I was using it as a 2wire or 3 wire or 4 wire or 5 wires (there were 6 wires on vehicle side & 4 wires on the trailer side so was very confusing) took about 3hrs but could probably be done in half the time 152850

- 56146KIT

by: Lawrence Stearns04/23/2013

Working just great, thank-you! 77399


Still Working just great !

Larry S - 04/23/2014


- 56146KIT

by: DW08/29/2013

All I can say is WOW! I placed my order Sunday night and by 8 AM in the morning I had received 2 emails one telling me my order was being processed and would ship soon and the other telling me it had shipped already! Wednesday afternoon I receive an email telling me that my package had been delivered, they actually tracked the package to make sure it was delivered. I wasn't even home yet but I knew my package would be waiting for me when I did get home. I will definitely order from Etrailer again when I need more trailer related parts! 97462

- 56146KIT

by: Joel11/27/2012

Mounted this on a BMW X1 (2013). This kit is not vehicle specific. I had plenty of Power cable as the battery is rear mount, but hardly an inch to spare for any of the other wires. The instructions were pretty vauge and there is no vehicle specific information to help you find the correct wires, etc... It would be nice if etrailer provided custom instructions to specific vehicles as Crutchfiled does for stereo installations. However, I'm no newbie when it comes to wiring, so I managed to get a very functional and clean install of this kit. 60040

- 56146KIT

by: larry g.11/10/2014

sorry that I can't show picture of wiring.I had it done at a service center due to a winter storm dumping 18" of snow on my driveway where I planned on doing the install myself.The delivery was fast and packed very nice.This wiring harness was installed in conjunction with a curt 2" 3500# receiver hitch.I plan on uing this not only for towing a trailer,but also a receiver style(curt)bike rack and a receiver style(foldable)tray that I will use to keep my vehicle clean.Will haul deer and garbage cans along with other unclean items. 160171

- 56146KIT

by: Jerry MH07/27/2015

Wire kit is a necessity if you want lights and this kit is first rate, quality product. This is not a simple installation, You have to remove some interior trim pieces and route a hot wire through the firewall to the battery. Go through the rubber cable boot for the hood release cable. The wire will easily go through the same hole as the cable, small hands work best. This installation takes longer than the hitch, I took four hours and this was my second installation. Good product and necessary. 214827

- 56146KIT

by: Larry S.12/30/2014

I received the package and contents in perfect condition. The shipping time was extremely fast. Due to below freezing temperatures, it may be Spring before I start installing the trailer lighting kit. I hope the wire clips are small enough to fit the tiny wires to the taillights and make a good connection. Disconnecting the battery to install the kit is a problem. A Honda will kill the stereo system when the battery is disconnected. This requires a trip to the dealer to get it unlocked. 167292

- 56146KIT

by: David G12/22/2013

As mentioned in my review of the entire Rcvr and wiring process, no "plug & play" wiring harness yet exists for the Ford C-Max so you have to crimp into existing wires to make the connections. Found it better to wire into the driver's side harness and run the right turn signal wire over to the other side of the C-Max. The kit included everything I needed so installation was straight-forward. Def recommend the E-Trailer product line for users of any vehicles. You wont be disappointed. 110842

- 56146KIT

by: George B.06/16/2015

Great product, and support for installation. Just read the directions included, and watch the video online in the website. My access point in my 2003 Subaru Legacy sedan is inside the trunk, directly behind the rear lights. Subaru has an access behind the bulbs for service and bulb-changes, and gives direct and easy access to the wires being tapped into. Truly, it was as easy as that. Good solid connections first time around, and the trailer lights lit up just as they should. Very happy. 203894

- 56146KIT

by: Jesse04/15/2013

I installed this product in a 2013 Prius Plug-In. The install itself was fairly cumbersome, as there was a fair amount of disassembly required to access the necessary wiring. In the end, the product fit nicely and functioned perfectly. My only "complaint" was that the LED tester was so dim that it was very difficult to dicern on/off in the sunlight. 75995


Hi, Im installing this kit on 2013 prius two base, does anyone know how to check the tail light wire or its colors?Thanks a lot.

comment by: Valentin - 05/24/2014


I recommend using a circuit tester like the # 40376
Circuit Tester Kit
to verify the functions of the wires on your Prius. There are several videos on the product page that show how to use the tester for verifying the functions for trailer wiring harness installation.

Rachael H - 5/29/2014

- 56146KIT

by: Mike L.09/15/2011

Ordered on a Friday and had it delivered and installed by Tuesday night. Now my V-Dub is an "SUV"!!! 23984


Was gonna do this on my 09 jetta wagen gasser 2.5L.How hard is it? Any thoughts on the gasser model towing?Had my eye on a quicklite 8.1. I thought it would be ok for weight.

comment by: SHane K - 03/31/2014


The install is not too bad if you have done any basic electrical before. We have in fact shot a video fo the installation of this kit on a 2010 Jetta Wagen that should be pretty helpful for you, check the link below. The hitches available for the 2009 SportWagen have a 200 pound tongue weight capacity and a 2,000 pound trailer weight capacity. You should check the owners manual to see if it states a lesser capacity, if so, that is the figure you should abide by.

Patrick B - 4/2/2014

- 56146KIT

by: Tom C.04/30/2015

I am an electrical engineer so installing this was easy for me. I did watch the videos on Etrailer. You will not need to be an engineer or technician to install this if you are reasonably handy. This should be easy for most with the help of the video. It is also much cheaper than having a trailer hitch company install and it will give you the ability to do a much better installation than trailer hitch companies typically provide. Etrailer rocks! 189109

- 56146KIT

by: George A.06/05/2015

I bought this for my 2007 Impreza and the installation was a breeze. The video that has for the install was the best tool in this install. I found that the circuit tester didn't work as it should have. Not sure if the led was out or not but luckily I didn't need it. I tested it out on the trailer I just purchased and everything runs as it should! No problems at all plus it tucks away perfectly into my jack stand compartment. 200811

- 56146KIT

by: Dan B.06/25/2015

I had an extremely positive experience in ordering the wiring kit from eTrailer. I needed it for this coming weekend and it had to be shipped via the US postal service because UPS can't find my house (I live on a new road that doesn't yet show up on a GPS). Julie at eTrailer made all this happen so fast that I received the package on Thursday, three days earlier than had been predicted. I would definitely order from this company again. 207186

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by: Paul H08/09/2013

Installed this myself on my 2011 Jetta TDI SportWagen. The included instructions are not much help, but the videos here on etrailer tell you everything you need to know. Definitely watch them through a couple of times and expect that your install will take a little longer than when the pros do it. Not that hard. Works great once installed. Very nice that I can switch between trailers with incandescent and LED lights without worry. 94150

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by: Roger02/13/2013

The trailer wiring kit for my Nissan Murano, with the circuit protected tail light unit worked flawlessly. The instructions were easy to follow and the installation went well. The only difficult part was the testing of the wires to determine tail light, brake light and right /left turn signals, which was very time consuming, cumbersome and required an additional person. I am very happy with the Curt trailer tail light wiring kit. 66182

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by: Case11/17/2014

Item was exactly as described and came with good, clear instructions. Everything that was needed was including with the kit. The circuit tester was incredibly helpful and easier to use than a multimeter. Customer Service with E-trailer is also really good. I needed to upgrade the shipping on my order. When I called, they were very responsive and got me taken care of quickly and the item showed up faster than expected. 161308

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by: Peter C03/16/2015

Mostly good - except the green wire to connect to the passenger side turn signal was too short for my Nissan Armada. Fortunately I was easily able to solve this with spare wire I had in the shop - but another 15 inches on the wire would have saved me the trouble. Also - the black wire to run to the battery was just barely long enough, thanks to the fuse wire. A bit more for future customers would be a good idea. 178492

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by: don09/26/2014

After speaking to Steve at e-trailer he sold me the wiring harness I needed for my rx300Llexus,I couldn't get anyone to install a wiring harness for my new trailer I had purchased, Steve reassured me it wasn't hard to do it myself, I had no problems with the install. Everything was in the package,. including a tester for checking for power.I was very pleased with etrailer and there produce. Thanks again Steve C 153146

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by: Robert04/21/2013

I purchased the Curt wiring harness and it came with all the necessary parts and accessories. The instructions were generic making finding the specific wires a little difficult, but not a problem once I took the rear light out so I could find the brake light wire. Depending on the ability of the installer this could result in trouble. Details identifying the specific wires would have been nice. 77064

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by: wayne haynes05/07/2014

The kit was somewhat easy to install. The only problem with the kit is, the brown wire from the box goes to the orange wire and the red wire goes to the blue wire. Once I figured out that to do it became very easy. Great kit, as stated above the brown wire showes on your web site going to the blue and the reds wire going to the orange. Reverse the two and it works great. Thanks 129493

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by: John Hadden08/18/2015

After some truly bad information and worse experiences with trailer wiring, I was delighted to work with your wiring harness. Nothing had to be trimmed or adjusted in any way. Everything fit together beautifully and to top it off, worked brilliantly the first time. Delivery was a bit ahead of schedule and the kit had everything needed to complete the job. Thank you! 220195

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  • Trailer Hitch Recommendation for a 2016 Honda Pilot
  • Yes, the Curt Hitch part # C13146 that you referenced has been confirmed as a fit for your 2016 Honda Pilot so it would work well for you. I attached an install video for you to check out as well. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip, and a storage...
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  • Trailer Hitch for a 2005 Subaru Impreza Outback Sport
  • Curt trailer hitch # C11318 will fit your 2005 Subaru Impreza Outback Sport. It does indicate this in the instructions which I have linked for you to check out. If you plan on doing some towing then the correct ball mount is # C45022. For a pin and clip use # PC2. For a 1-7/8 inch ball use # 19256 and for a 2 inch use # 19258. And for trailer wiring use # 56146KIT. If you plan on using the rack for a bike rack or cargo carrier then Curt requires the use of stabilization strap # 18050....
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  • What Does 200 Pound Tongue Weight Capacity Mean on the Trailer Hitch for a 2008 Mazda RX-8
  • Tongue weight capacity is the hitches capacity to handle the weight placed on a properly sized, rated and installed drawbar, when a trailer is attached. It also refers to the weight of items carried in the hitch receiver tube like a bike rack and bikes or a cargo carrier and the items placed on it, and the items loaded in the vehicle behind the rear axle. The CURT Trailer Hitch, # 11472, mounts to the bottom of the trunk pan and to the bottom of the frame rails using hardware that is...
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  • Troubleshooting Tow Package Wiring of 2004 Chevy Suburban
  • Your Suburban has a fuse box under the hood, under the dash, and on the drivers side edge of the instrument panel. Each fuse box has fuses that relate to the towing circuits, see page 5-110 of your owners manual for a listing of the fuse locations. If the vehicle has never been used for towing before, it is unlikely that all the fuses that protect the tow package circuits have been blown. From what you describe, no power is reaching the plug under the vehicle that your 7-way trailer...
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  • Hitch Comparisons for the 2011 Volkswagen Jetta TDI Sedan
  • The square tube Hidden Hitch # 60283 and Draw-Tite Hitch # 24866 are very similar, so similar that they share the same installation instructions. The main difference between these two hitches is that the Hidden Hitch comes with a ball mount, pin and clip included. Whereas, you would need to purchase those items separately if you went with the Draw-Tite. For that reason I would recommend you get # 60283. The CURT Hitch # 11072 is a confirmed fit for your 2011 Volkswagen Jetta Sedan TDI...
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  • How To Determine If My Kia Sorento LX 4 Cyl Came Equipped With Tow Package
  • Your owners manual should indicate if your 2011 Kia Sorento came equipped with a factory tow package. You can also look under your vehicle to see if there is a connector on the driver side frame rail behind the rear tire. Typically you would not see a 4 cylinder model come equipped with a tow package from the factory. If your Kia Sorento does not have a factory tow package, you will need the Curt T-Connector Vehicle Wiring Harness, part # C56163. Part # C56163 will connect to the back...
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  • Trailer Wiring Harness Availability for 2016 Kia Sorento 4-Cylinder Turbo
  • The 2016 Kia Sorento is part of the latest (third) generation of this vehicle. The Curt wiring harness you referenced, custom-fit 4-pole harness # C56151, is a confirmed fit for the 2016 Sorento with the factory tow package and it fits either V6 or 4-cylinder versions with the factory tow package wiring. My contact at Curt verified this for me. If your Sorento does not have the factory tow package then instead you will need part # 56146KIT which is a hardwire installation. The kit includes...
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  • Trailer Hitch Recommendation for a 2011 Mercedes ML350 BlueTECH Model
  • We do have one trailer hitch that is listed as a fit for a 2011 Mercedes ML350 BlueTECH model. Take a look at Curt trailer hitch # C13102. This model was designed to fit the BlueTECH edition. I have included a link to the installation instructions for you to view. If you plan on doing some towing, I recommend the etrailer ball mount kit # 989900. It comes with 2 ball mounts, 2 balls, a hitch pin with clip, and a carrying bag. For trailer wiring use # 56146KIT. I have included a link...
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  • Trailer Hitch, Wiring, and Transmission Cooler Recommendation for a 2016 Honda Pilot
  • For a trailer hitch for your 2016 Honda Pilot we have the Curt Hitch part # C13146 that has a 6,000 lb trailer capacity and a 900 lb tongue weight capacity. You should note that if your vehicle has lower capacities (sounds like it does), you would need to go by the lower figures as overall capacity. Right now for trailer wiring all we have is a universal install kit like part # 56146KIT. If Honda has a custom fit harness that might be a better option but this one will still work. For...
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  • Trailer Hitch and Powered Wiring Harness Recommendations for 2007 Mercedes-Benz ML350
  • We offer several 2-inch Class III hitches for your 2007 Mercedes-Benz ML350 that can be seen on the link provided. All have the same capacities and will install pretty much identically. Each includes the required mounting hardware and each one will require a little drilling. I recommend the Curt # 13342 since it is the lowest cost option. Instructions are linked along with a helpful article on hitch installations. The ball mount, hitch pin and clip are sold separately. I recommend ball...
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  • Relays Needed for a 2013 Nissan Titan
  • It sounds like you are looking for are the tow package relays for your 2013 Nissan Titan. If that is the case, then you will want the Curt Relay Kit, # C57000. These relays are required if your truck does not have 12v power or turn signals at the 7-way trailer connector. These relays fit into the under-hood fuse box and are for the turn signals and 12v power. I have attached a video showing how to install these relays. Some trucks will require a third relay, part # 38666-1, for the...
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  • Trailer Hitch for a 2012 Subaru Impreza WRX STi Sedan
  • We list only the Curt trailer hitch # C11317 that you referenced as a fit for the 2012 Subaru Impreza sedan WRX STi model. If you plan on doing some towing use # C113173 which comes with a ball mount, pin, and clip. I have included a link to the installation instructions for you to view. The instructions do not exclude models with that light at the bottom center, the hitch receiver should be below the rear fascia once installed. Not all models appear to have that light but they do have...
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  • Trailer Hitch and Wiring for a 2016 Honda Pilot
  • Hidden Hitch is the brand name. It isn't a description of the hitch appearance once installed so it is sort of a misnomer. But it also depends on the vehicle because in some cases everything but the receiver could be hidden but so should all the hitches for the same vehicle. On a 2016 Honda Pilot or Acura MDX the hitch mounting brackets and cross beam would be hidden. I have included a picture as an example. If you plan on doing some towing I recommend etrailer ball mount kit # 989900....
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  • Comparison Between Curt Tail Light Kit # 56146KIT and Tow Ready 4 Pole Harness # 119179KIT
  • The Tow Ready 4 Pole Harness # 119179KIT you referenced is a compatible fit for your 2010 Audi A3; however, the Curt Tail Light Kit # 56146KIT is not. Another trailer wiring kit that will work for your vehicle is the Hopkins Active Tail Light Converter # 46255. Both kits are similar in that they are universal fit with powered converters, come with install kits, and are very close in price. The Tow Ready kit comes with a circuit tester, (5) quick splice wiring adapters, and has a slightly...
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  • Class I Trailer Hitch for 2015 Acura TLX
  • Curt Manufacturing offers a Class I hitch for your 2015 Acura TLX, part # C11409. If you're using the hitch as an attachment point for a bike rack or cargo carrier, be aware that Curt's warranty requirements specify that a stabilizing strap like part # 18050 needs to be used to provide extra support. If you'll be using the hitch for light duty towing purposes, you might also need the following to complete your towing set-up: Trailer wiring harness, part # 56146KIT Ball mount #...
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  • 2015 Jeep Grand Cherokee Trailer Wiring Troubleshooting, 7-Way Not Active
  • Your 2015 Jeep Grand Cherokee may have the connector needed but it's not active. First, I would use a circuit tester such as # 3808 to test the 7-way connector to see if it's active. You may need to contact a Jeep dealer to have them activate the trailer wiring as it sounds like yours isn't. This is a fairly common issue that we have seen.
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  • Recommended Trailer Hitch and Wiring Harness for a 2015 Ford Explorer
  • Congrats on your new vehicle! Yes, the Curt hitch # C13100 is a confirmed fit for the 2015 Ford Explorer. The best way to double-check if you have a towing package or not, is call your dealership and have them run the VIN number. They can determine exactly what the specifications are on your 2015 Ford Explorer. The wiring harness you need is Curt wiring # 56146KIT (for trucks without the tow package) or Curt custom fit wiring # C56172 (for trucks with the factory tow package)....
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  • How to Determine if 2015 Kia Sorento LX V6 Has Tow Package
  • The easiest way would be to call your dealer's service department and have them run the VIN of your vehicle. They should be able to tell you exactly how your vehicle was equipped. The Curt Class III Trailer Hitch you referred to, part # C13152 will fit all models of the 2015 Sorento. If you weren't planning on towing with the hitch, but were going to use the hitch as an attachment point for a bike rack or other hitch mounted accessory, it won't matter whether you have the tow package...
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  • Can Weight Distribution be Used with a 2013 Kia Sorento LX V6 Towing a 2,700 Pound Trailer
  • The first thing you are going to want to do is consult the vehicle owners manual to determine if there is any restriction on using weight distribution. Then, if the vehicle already has a trailer hitch, make sure that the hitch itself is rated for use with weight distribution. If it is not then I recommend Hidden Hitch trailer hitch # 87574, etrailer ball mount kit # 989900, and wiring kit # 56146KIT. The trailer that you have is not so heavy as to add too much if any additional stress...
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  • Hitch Recommendation for a 2011 Kia Sportage SX
  • I do have a hitch solution for you, but I checked Draw-Tite and they do not recommend the Draw-Tite Max-E-Loader Trailer Hitch # 75717 as a fit for the 2011 Kia Sportage SX Turbo. For your vehicle you would want a Curt Trailer Hitch # C13120. This hitch is confirmed to fit on the SX Kia Sportage models and should work very well for you. I attached installation instructions for you to check out also. To complete your towing setup you may be interested in the following products: Curt...
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  • Will Curt Trailer Wiring Harness, # 56146KIT, Work with LED and Incandescent Trailer Tail Lights
  • The Curt Trailer Wiring Harness, # 56146KIT, is a powered converter. This means that the trailer lights will be drawing most of the power they need from the battery. With this type of connection, the harness will work with LED and incandescent bulbs on the trailer. However, if you have LED lights and incandescent lights on the same circuit the lights may not function properly because they draw different amounts of power. It would be best to replace all the lights to one type or the other.
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  • Can the Spare Tire be Removed on a 2013 Kia Sorento with a Trailer Hitch Installed
  • Yes, to lower the spare tire you will need to angle it out and not try to drop it straight down. So you can remove/reinstall the spare tire with the trailer hitch installed on your 2013 Kia Sorento. If you plan on doing some towing I recommend etrailer ball mount kit # 989900. It comes with 2 ball mounts, 2 balls, a hitch pin and clip, and a carrying bag. For wiring, if you have a V6 SX model without factory tow prep package use # 56146KIT
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  • Trailer Hitch Recommendations for a 2013 Subaru Impreza Hatchback
  • If your 2013 Subaru Impreza hatchback is a WRX or WRX STi and has the quad exhaust tips then you can use Curt trailer hitch # C11120. If it has single exhaust use # C11286. I have linked the instructions for both hitches for you. For either hitch use ball mount # C45521 and pin and clip # PC2. For a 1-7/8 inch ball use # 19256 and for a 2 inch use # 19258. For trailer wiring use # 56146KIT. I have linked instructions for the wiring as well.
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  • Convert a 4-way to a 7-way on a 2006 Lexus RX400 H
  • If the trailer doesn't have brakes all you would need is the 4 to 7-way adapter part # 37185. The 4-way of your 2006 Lexus RX 400h will plug into it and you would be ready to go. If your trailer has brakes you would instead need the part # ETBC7 and a brake controller. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake controller because of how well it works and how easy it is to setup. I attached installation instructions...
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  • Is Installing a Trailer Wiring Harness Safe and Will It Void the Warranty on a 2011 Volkswagen Jetta
  • The Curt Upgraded Circuit Protected Tail Light w Converter Hardwire Kit, # 56146KIT, is a powered unit that powers the trailer lights directly from the vehicle battery while only receiving the signals from the tail lights on the vehicle. This method protects the vehicles sensitive wiring and electrical components. The wiring harness will work with both vehicles and trailers that have LED lights. I recommend testing your wiring ahead of time. There should be one wire for the left turn...
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  • Troubleshooting Trailer Tail Lights Not Working After Replacing Old Lights with LEDs
  • This sounds like a ground problem. Most likely it is a bad or loose ground connection in one of the tail lights on the trailer. A bad ground will not allow the circuit to be complete and the lights will not work. But, this is an easy fix. All you will have to do is go back to each of the lights you have installed and make sure the grounds are properly connected to a clean and corrosion free bare metal surface. Many trailer lights ground through their mounting studs. If there is any...
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  • Recommended Wiring Harness for 2014 Infiniti QX60 with Curt Trailer Hitch
  • I spoke with my contact at Curt and he said you will first need to determine which wiring system your 2014 Infiniti QX60 has, a 2-wire, 3-wire, STT or ST system. If the wiring system sends the stop/turn signal along one wire, while the tail signal is separate then you have the two-wire system. You will want to use the Upgraded Heavy Duty Modulite Circuit Protected Vehicle Wiring Harness with Install Kit # 119190KIT. If the stop, tail and turn signals are all sent on separate wires,...
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  • What is the Correct Trailer Wiring Harness for a 2012 Volkswagen Jetta
  • CURT has recommended the wiring harness, # 56146KIT, as the correct fit for a 2011 VW Jetta. What you can do is use a circuit tester, like # 3808, or multimeter, # BTMT15, to test the wiring behind the tail lights to be sure. If you find that your Jetta has one wire that does both running lights and brake lights, one wire for right turn, and 1 wire for left turn, then # 56200 would be the correct harness. But, if you find that you have separate wires for all functions (right turn,...
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  • Wiring Harness Options For 2014 Nissan Xterra Without Factory Tow Package
  • I spoke with my contacts at our suppliers and asked about your 2014 Nissan Xterra. They were unable to confirm that the Tow Ready Harness, part # 118525, you mentioned is a fit for your vehicle. They have not done the test fit for a 2014 Xterra yet. My contact at Curt said they would be surprised if there was not a connector on your Xterra that the Curt T-Connector Vehicle Wiring Harness, part # C55441 would plug into. They told me that most folks have found this connector under the...
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  • Trailer Wiring Recommendation for a 2016 Kia Sorento
  • The Curt Wiring Harness part # C56151 that you referenced would fit your 2016 Kia Sorento if it had a V6 engine and the tow package, but since you have a 4-cylinder you would want the # 56146KIT instead. I confirmed these fits with Curt.
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Info for this part was:

Test Fit:
Joe V

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Michael L

Video Edited:
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Video by:
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