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

(166 reviews)

Code:   56146KIT



Shipping Special

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.

56146KIT Circuit Protected Tail light Converter with 4-Flat End, Circuit Tester and Quick splices

59146 Curt Converter 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.

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Video Transcript for Trailer Wiring Harness Installation - 2006 Lincoln Town Car

Today on our 2006 Lincoln Town Car, we'll be installing the Curt upgraded circuit protected tail light with converter hardwire kit with a 4-pole end and it includes a tester. Part number 56146kit.Now to begin with, we'll go ahead and open up the rear trunk of the vehicle. To remove the rear threshold we'll need to remove four push fasteners, two on each side up high and two in the center.Once we have all four of these fasteners removed, we can go ahead and pop the rear threshold out. Either a large flathead screwdriver or a trim panel removal tool works well for doing this.Next we'll go ahead and remove the trunk lining. We'll also have to take off the cover that covers up the spare tire. There's another nut cover that you'll need to remove.

Next over here on the driver's side, we'll take a plastic nut cover off and then you'll slip the lining up over the stud. There's also one push fastener just up in front of where the emergency fuel shutoff location is. We'll go ahead and remove the whole trunk lining and set is aside for now.We'll also go ahead and take out this piece of inaudible 01:34 material because we'll be needing to gain access to a grommet that's underneath it. Now we'll go ahead and take our test slide and figure out which wires do which so we'll know what color of wires to connect to the new convertor box. Now with the running lights on, we found that the orange wire with the blue stripe over here on the driver's side is both the left turn as well as the stop signal.

Over here on the driver's side, we will be connecting the yellow wire to the orange wire with the blue stripe on it. We will be using the quick splice connectors to make these connections.Now for the running light, we found that the brown wire is the running lights circuit. We'll be connecting the brown wire from the converter box to the brown wire here on the wiring harness. Over here on the passenger's side we need to figure out which is the turn signal. Again on this side it actually is the orange wire with the blue stripe on it.

Over here on the passenger's side, we'll be tying in the green wire off the converter box again with the orange wire with the blue stripe.Now that we have all our wires connected here at the back, the yellow wire to the orange wire with the blue stripe over here on the driver's side. The brown wire with the brown wire on the driver's side and the green wire with the orange wire with the blue stripe over here on the passenger's side. Now you will notice that there is a black wire that's connected to the converter box, this a 12-volt power supply wire. We will need to tie in the extra supplied wire using a butt connecter and route this up to the battery.Because this vehicle is a two-wire not a three-wire system, we will need to take the red wire on the converter box, add a ring terminal to it and add it in with the ground which is the white wire that already has a ring terminal on it. Now we'll go ahead and put our two wires that are going to be grounds which is red as well as the white wire into the body using the self-tapping screw supplied with the kit.

Now it is a good idea to find an area where the body has been doubled up to give you a good solid ground.We'll also go ahead and take the two-sided tape supply and put it on the back of the converter box, and then secure the converter box to the inside of the trunk of the vehicle.Next we're going to go ahead and take a razor knife and put a small X in the grommet right here on the trunk pin up here on the passenger's side. We'll then go underneath the vehicle and take the long extension piece of black wire that comes with the kit and push it back up into the trunk. We'll then pull it over and make a connection with the black wire off the converter box using a butt connector.Once that's done we'll pull any excess wire back out down underneath the trunk, because we'll need all this wire to gain access up to the battery. A quick tech tip: We did route the wire up and around in the trunk pan which caused us to actually add about two to tow-and-a-half feet of wire to reach the battery. If you just route the wire straight across the trunk pan and out the grommet, you should have plenty of wire to reach the battery without having to add any extension piece.Now that we have our wire through the grommet, we'll go ahead and add a little bit of silicon to seal back up the grommet. The silicon gasket maker that we used is part number LT37467.Now that we have all the connections made in the trunk, we can go ahead and put the trunk back together in the reverse order that we took it apart. Making sure we put all the push fasteners back in as well as the nut covers.Now that we have our black power wire hanging out from underneath the vehicle through the grommet here in the trunk pan, now we're going to need to route it up to the battery. To do this we're going to use an old section of airline tubing to help us fish the wire through the frame of the vehicle. Now you'll also notice that we used a small section of wire loom to help protect the wire until we got it into the frame of the vehicle. The wire loom part number is 459075-1 and it is sold by the foot. You will need about two feet of wire loom total.Next we'll go ahead and route our wire up through the frame and come up out just behind the passenger side front wheel. Now as you're routing the wire up to the front, it's also a good idea to use a few zip ties to help secure the wire whenever needed.We then have to pull the pole-wire out of the frame a couple of times and then feed it back in as there are a couple of spots in the frame that you need to make sure that the wire routes through. It's good to have a flashlight on hand to make sure that you're going in the right spot of the frame to make it go all the way to the front of the vehicle.Now that we have the wire up to the front of the vehicle, you'll notice that we actually added about three foot of extra wire in length. As I said earlier this is because we routed it around the trunk pan instead of going straight across the trunk pan to the grommet. For our extension, we used the same gauge wire and just added a butt connector in to give us the extra length we needed to get to the battery.Now that we've got our wire pulled up into the engine compartment, we'll route it up next to the battery and we'll need to add in our fuse holder. We'll simply take the fuse holder and using a butt connecter connect one side of it to our black wire . and on the other end we'll connect the ring terminal. This ring terminal will tie in with the positive side of the battery.Now because the nut does not completely come off the positive side of the battery terminal, we'll go ahead and snip out the center of the ring terminal then allow it to slide right over the stud then we can go ahead and tighten it back down.Now that we've got our connection with the battery done, we'll go ahead and put the 10-amp fuse into the fuse holder. With the fuse in place, we're ready to test out our new 4-Flat. We'll go ahead and take our test light and have someone run through the light functions. We'll take the ground on the test light and connect it to the open prong on the 4-Flat and then turn the running lights on. With the running lights on you'll touch the brown wire on the 4-Flat. As you can see here we get a constant light and a beep. For the left turn we'll touch the yellow wire. For the turn signal it's an intermittent beep or flash. For the right turn on passenger's side we'll touch the green wire, again an intermittent beeper flash and for the brakes it will be a constant light or beep for both the yellow and the green wire. As you can see here, everything's working just fine. When not using it you can just simply store your 4-Flat in the trunk area. When you want to use it, simply pull it out and let the trunk lid close down making sure that we keep the wiring away from the center-latch potion of the trunk as this can easily damage the wire. The weather stripping that goes around the trunk will simply push down allowing the wire to fit in between the trunk lid and the body of the vehicle.You'll also notice that the kit comes with a cover that'll cover up the 4-Flat ends. This will keep any dirt and debris from getting in the connection points. With that, that will conclude our installation of the Curt upgraded circuit protector taillight with converter hardwire kit with 4-pole end part number 56146kit on our 2006 Lincoln Town Car. .

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   (166 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: 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: 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

- 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: 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: 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: 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

- 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: 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: 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: 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: 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

- 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: 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

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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

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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

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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: 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: Jaymark11/19/2014

I ordered the lighting kit for my 2011 X3 and it showed up sooner than expected. The install was a little hairy but the etrailer support line was patient and helpful and walked me through how to find a wire that should have been in place but wasn't there. Really glad that I ordered it and installed myself as I saved over $150! Thanks! 161881

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by: Cherilyn H09/10/2014

Mechanic reported no problems installed tow bar, ball holder and wiring on the car. Will be traveling over a thousand miles to pick up a tent trailer. Will get to test out the new installation of these items at that time. All parts were provided. Arrived quickly, in sufficient packaging for all of my order. Easy to locate and purchase online. 150630

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by: John s.04/28/2014

Perfect fit for my 2008 rabbit though the cross bar made contact with tail pipe. All I did to remedy the situation was to put a regular exhaust clamp (I believe it was a 2 1/2") around the last rubber exhaust hanger, as you tighten the clamp just keep an eye on the tail pipe as you eliminate the contact. Stop as soon as you get about 1/4-1/2 in. 127842

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by: BMW x307/19/2012

Thank you for the follow up and the great customer service from pre-order to post delivery. Got my tow harness a day a head of schedule and already have it installed thanks to e-trailers step by step install video for my X3 BMW. Was a huge help considering places like U-haul didn't stock the correct parts or have the ability to install on BMW. 48478

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by: BudB07/08/2014

Product installed exactly as described. Seems to work perfectly on my Yakima trailer. Installation was done on a 2010 VW Jetta TDI sport wagon. As others have stated the hardest and most time consuming step is running the power line up to the battery terminal. The video was very helpful except for the power line routing. 139983

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by: Jim M.08/06/2012

This is a good electrical design. Mounting may vary however. The 2011 VW Jetta has panels which must be removed so the adapter can be mounted. These are held on by plastic snap screws which may break if removed. Fishing the battery wire to the front can be challenging if you don't have the car on a lift. I persevered and it works great. 50721

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by: Jerome N07/31/2014

After the dealer refused to add a "flat four" to my TDI Jetta for so I could tow my kayak trailer, etrailer had just what I needed. I did hire a pro to install it and they did a great job. I watched the video ahead of time and the installer was grateful for the pre-installation coaching that I gave him. I'm a happy kayaker now. 143763

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by: John H08/04/2014

What a great produce ! I have to repair wiring harnesses on Mack tractors so I have some knowledge of wiring but this is down to earth and simple to do. The utube clips give even the novice to breeze thru it. 1 hr tops on a Lincoln town car and the trunk was back together and the wiring done. Thank you for such a nice product. 144289

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by: Brian G07/22/2014

Super easy to install and if you watch the you tube install video its even better. This is the second wiring harness I have purchased from etrailer and Curt, the 1st one was for my wifes Honda Pilot. These guys thought of everything not only to make the install easy but also have everything tucked neatly away while not in use. 142531

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by: David S12/02/2014

Installing non-OEM wiring for towing is almost always a painful process. This kit, however, make it as painless as possible. I would have preferred better connectors then those blue (crimp in lock) devices shown in the picture but they do work. Just make sure you match up the wires as shown in the video and you will be fine. 162872

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by: Frank M05/20/2013

The kit was pretty straight forward to install. It was a little tricky getting access to the area in my GX470, where the wires were routed, but once in there it went well. The circuit tester/probe didn't work, so I had to use my multimeter to trace the wires. Once traced connecting the module to the vehicle lines was easy. 81077

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by: Fernando02/13/2014

I wrote the review. Here are some photos. on the last photo I had to cut more for the hitch pin, however see the left side how little cutting I did, and notice I did not cut to the top of the lower bumper. also notice the bow, as I had to remove the bumper and notch out from the inside. contact me with any questions: 116464

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by: Dave Updegraff06/14/2013

I failed to carefully read specs, and naively expected this to come with the plug&play connector for the tail light assembly in my car. Not so. There are no model-specific anythings. All the wiring is cut&paste. Certainly works, but not very clean. My own fault for not having read more carefully. 84608

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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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  • 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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  • 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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  • 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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  • 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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  • 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 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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  • What is the Correct Trailer Wiring Harness for a 2012 Kia Sportage SX
  • For the 2012 Kia Sportage SX model, the correct trailer wiring harness is Upgraded Circuit Protected Tail Light w Converter Hardwire Kit, # 118526. Installation is not very difficult. The only real time consuming part is running the power wire to the battery. The power wire must be connected to the battery, no other power source has been tested and approved. I have included an FAQ that should help.
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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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  • Wiring For the 2011 Jetta TDi Sedan for Towing a Trailer with Reverse Lights and Electric Brakes
  • The bypass that you mentioned is most likely the power wire that allows this harness to draw power directly form the vehicle battery and eliminate the possibility of overloading the sensitive circuitry and computers on your 2011 Volkswagen Jetta. The CURT wiring harness, # 56146KIT, is designed to work with your vehicles electrical system and does have the separate 12 volt power wire to protect your vehicle wiring. To tow a trailer with reverse lights you would need to use the Universal...
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  • Hidden Hitch Recommendation for a 2012 Volkswagen Sportwagen 2.5S
  • This Hidden Hitch Trailer Hitch # 60283 will fit on your 2012 Volkswagen Sportwagen 2.5S. I checked with Hidden Hitch and they confirmed this. I attached installation instructions for this product for you to check out also. You may be interested in the following products to complete your towing setup also: Curt Custom Fit Vehicle Wiring # 56146KIT Hitch Ball with 1-7/8 inch Diameter # 19256
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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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  • 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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  • Trailer Wiring Harness Recommendation for a 2014 Kia Sorento SX
  • The Curt Class III Trailer Hitch, # C13152, that you mentioned is the correct hitch for your 2014 Kia Sorento SX. At this time, there are two wiring harnesses that have been confirmed to work with your Sorento SX. If your Sorento came with a factory tow package, then you can use the T-One Wiring Harness, # 118269. The factory connectors under the vehicle (see attached instructions for # 118269) should already be active if you have the tow package. The factory connectors may be on the...
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  • Hidden Hitch # 60283 Compatibililty with a 2011 Volkswagen Jetta TDI
  • Yes, the Hidden Hitch Trailer Hitch # 60283 that you referenced will work on your 2011 Volkswagen TDI. The installation will not be too difficult, With basic mechanical skills and tools, it would most likely take you about 50 minutes to complete this installation. I attached installation instructions for you to check out also. You may be interested in the following products to complete your towing setup: Curt Custom Fit Vehicle Wiring # 56146KIT Hitch Ball with 1-7/8 inch Diameter...
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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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  • 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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  • 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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  • Curt Hitch Recommendation for a 2012 Kia Sorento that is Compatible with a Full Size Spare
  • The Curt Hitch # C13073 is compatible with your vehicle and allows a full size spare to be used when in installed. Check out the picture I attached that shows this hitch installed on a vehicle similar to yours and a full size spare underneath the rear of the vehicle. I attached installation instructions and an installation video for this product for you to check out also. To complete your towing setup you may be interested in the following products: Curt Custom Fit Vehicle Wiring...
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  • Wiring Harness for a 2007 Kia Sorento
  • The Tow Package Wiring Harness with 4 Pole Trailer Connector, part # C56151 will work with your vehicle if it is equipped with the factory tow package. This harness has two connectors on it, one uses the existing factory installed harness to obtain 12 volt power from the battery, the other connector provides the lighting signals. If your vehicle does not have the tow package, you will need to use the Upgraded Circuit Protected Modulite, part # 56146KIT. This connector would need to be...
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  • Will Hidden Hitch Trailer Hitch 60294 Fit a 2013 Volkswagen Beetle Convertible TDI
  • Yes, I spoke with my contact at Hidden Hitch recently about trailer hitch # 60294 and it will fit on the TDI models. It is only the gas turbo models that are excluded. I have included a link to the installation instructions for you to view. This hitch comes with the correct ball mount, hitch pin and clip. For a 1-7/8 inch ball use # 19256 and for a 2 inch ball use # 19258. And for trailer wiring use # 56146KIT. I have linked the instructions for the wiring as well.
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  • Curt Hitch # 11072 and Towing Setup Component Recommendations for a 2011 Volkswagen Jetta Sportwagen
  • The Curt Trailer Hitch # 11072 that you referenced would be the correct hitch for your 2011 Volkswagen Jetta Sportwagen. This hitch comes with a drawbar, pin and clip included. I attached installation instructions and an installation video for you to check out also. You would also want a Hitch Ball with 2 inch Diameter and Short Shank # 19258. For wiring I would recommend Curt Custom Fit Vehicle Wiring # 56146KIT. This kit should work well on your Jetta that has incandescent lights and...
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  • Can the 12 Volt Power Wire from a Trailer Wiring Harness Tap Into a 12 Volt Accessory Outlet
  • I strongly recommend running the 12 volt power wire from the Curt Wiring Harness, # 56146KIT, directly to the vehicle battery. The 12 volt accessory circuit was not designed to support the additional load of a trailer wiring harness. A wiring harness must have its own dedicated circuit directly to the battery. We have seen many instances where customers have tapped into a 12 volt accessory circuit, like a car lighter socket, and the harness failed. We have also seen instances where the...
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  • Trailer Wiring Options for a 2008 Nissan Armada without Tow Package and No Factory Plug
  • You may need to remove the spare tire on your 2008 Nissan Armada in order to find the harness if it is present. If you search and cannot find it, your Armada may not be set up with the wiring. In order to add trailer wiring, you would need to hardwired it using # 119147KIT. If you also wanted to add a 7-Way harness (if the trailer you plan to tow is equipped with a 7-Way) you will need to also install a 4 and 7 Way Installation Kit, # ETBC7, after installing the 119147KIT. I have...
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  • Recommended Trailer Wiring Harness for 2014 Subaru Outback Wagon
  • Although the Curt # 56146KIT harness you referred to would work just fine, using the # C56040 would make for a much easier install. The # C56040 is a plug-and-play unit, while the # 56146KIT is a hardwired option that would need to splice into the existing vehicle wiring. The connector for the # C56040 is usually located along inside of the drivers side wheel well, as shown in the instructions. I will warn you that Subaru is notorious for varying the location of the connector. You might...
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  • Draw-Tite Hitch Recommendation for a 2011 Volkswagen TDI Sportwagen
  • The Draw-Tite Hitch # 24866 should work well on your 2011 Volkswagen Sportwagen TDI. This is one of our most popular hitches available for your vehicle. I attached installation instructions for this product for you to check out also. To complete your towing setup you may be interested in the following products: Sportframe Drawbar # 3593 Hitch Ball # 19256 Curt Trailer Wiring # 56146KIT (installation instructions attached) Pin and Clip # PC2
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  • Which Curt Trailer Wiring Harnesses Will Fit a 2014 Subaru Forester
  • Actually, you could use either wiring harness and both are in our fit guide for your vehicle. Curt has both custom fit T-connector wiring harnesses like # C56040 and hardwire harnesses like # 56146KIT. Either one will fit. It is listed in the Curt application guide. If it were me, I would go with the custom wiring harness # C56040. I have included a link to a video showing a typical installation on another vehicle this harness fits. And I have linked the instructions for you.
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  • Will Draw-Tite Hitch # 75087 Fit 2002 Mercedes-Benz M Class
  • Yes, the Draw-Tite Hitch # 75087 will fit your 2002 Mercedes-Benz M-Class. I have attached a short installation video that shows this hitch being instlled on a 2003 Mercedes-Benz M-Class for your review. If you will be towing and need a wiring harness I recommend the Curt wiring kit # 56146KIT which includes the tester. I have also attached a short installation video of this as well. You might also need a ball mount, such as Draw-Tite # 2923 as well as a trailer ball. For a 1-7/8...
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  • Hyundai Santa Fe Sport 2014 Trailer Wiring and Hitch Recommendation
  • The recommended trailer wiring for your 2014 Hyundai Santa Fe Sport without the factory towing package is the Curt Wiring Harness part # 56146KIT. I attached an installation video for this kit on a similar vehicle to give you an idea on how the install will take place. For a hitch I would recommend the Hidden Hitch # 87634. You may be interested in the ball mount kit part # 989900 to complete your tow setup as well.
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  • Will Curt Trailer Hitch and Ball Mount 113183 Fit a 2004 Subaru Impreza WRX
  • The Curt trailer hitch with ball mount # C113183 will fit the WRX version of the 2004 Subaru Impreza, including STi models. I have included a link to the installation instructions for you to view. To add a ball you can use # 19256 for a 1-7/8 inch diameter or # 19258 for a 2 inch diameter. For trailer wiring use # 56146KIT. I have included a link to the installation instructions for you to view for the wiring as well.
    view full answer...

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