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Custom Fit Vehicle Wiring > 1990 > Lexus > LS 400

Curt Wiring for the 1990 Lexus LS 400

Curt Wiring

ratingratingratingratingrating (83 reviews)


Code:   56146KIT

Retail:$72.00

Price:$47.22


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Shipping Weight: 2 pounds

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

Features:

  • 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

Specs:

  • 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 - 2004 BMW X3

Today on this 2004 BMW X3, were going to be installing the Curt 4-pole Wiring Kit, part number 56146KIT. First, were going to remove the spare tire, jack assembly, and battery cover door. Next, well remove the fasteners and secure the rear threshold. Now, we can go ahead and remove the two interior side compartments behind both tail lights. As you can see, this now exposes us to the manufacturers rear tail light wiring. Now, we can go ahead and use a piece of wire in the test light to identify the manufacturers tail light wires.

To make this connection, well use the quick connectors that come with our install kit. The tail lights or running lights will be the purple wire which will connect with the brown wire of our converter box. Well need to identify the turning signal, which in this case is going to be our blue wire and we'll connect it with the yellow wire from our converter box. And the black wire with the green tracer will be for the red wire from our converter box. Now, I'm going to go ahead and take some black electrical tape and wrap up the connection.

Next, I'm going to go ahead and take the white wire with the pre-formed ring terminal and use this manufacturers mounting stud for our ground. Now, we can go ahead and take the green wire from our converter box and route it over to the passengers side as this will be the turn signal for the passengers side. Now, well go ahead and take the black wire provided with our install kit, strip it back and make a connection for the power to our converter box. We'll route this over to the battery. For this application, the battery is actually mounted in the rear of the vehicle so the routing wont be too far.

Were going to cut off any extra of the power wire as we need to add a fuse holder. Fuse holder is part of our install kit. Well cut the fuse holder in half, add a bud connector to one end to connect to our power wire, and add a ring terminal to the other end so that we can attach it to the positive battery terminal which will complete our power circuit. Next, well go ahead and take our 4-pole connector and follow the same routing as the green wire. Only well take it to the center of the vehicle where it will be stored when its not in use.

Now, well go over to the passengers side and just as we did on the drivers side well use our piece of wire to back throw the connector and identify the proper color to attach our green wire for our turn signal. Again, well be using a quick connector to make the connection and then some black electrical tape to wrap it up. Now, with all our connections made and all our wires routed, we can go ahead and reassemble the interior of the vehicle. Now, with everything reassembled, lets go ahead and show you how to use your new 4-pole wire. First, were going to take our new 4-pole wire out of the rear cargo area, bring it outside the vehicle over the threshold and down to the hitch or accessory. We can go ahead and close the door on the hitch as the weather stripping is thick enough that it wont harm the wire. However, do stay away from the latch as it can damage the wire. Then once you have completed using your new 4-pole wire, well simply roll it back up and store it in the rear cargo area. And thatll complete the install of our new Curt 4-Pole Connector, part number 56146KIT, for our 2004 BMW X3.


Customer Reviews

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

Average Customer Rating:  ratingratingratingratingrating4.7 out of 5 stars   (83 Customer Reviews)




- 56146KIT

ratingratingratingratingrating by: Scotty too Hotty03/09/2014

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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

ratingratingratingratingrating by: Mike L.09/15/2011

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


Comments

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 - 3/31/2014


3335

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

ratingratingratingratingrating by: Ina Scheisehausen09/18/2013

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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

ratingratingratingratingrating by: Troy F.03/18/2014

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Kit came with everything needed and install went pretty smooth. I can't say enough how much the install video really helps during the installation of all components - just a great product that I highly recommend!121226



- 56146KIT

ratingratingratingratingrating by: Jim M.08/06/2012

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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



- 56146KIT

ratingratingratingratingrating by: Lonnel G04/10/2014

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The kit was perfect and the instruction and test light did everything I had to do. Was very easy to follow and worked first time. Would recommend this kit for anyone that has a Chrysler Town & Country Van. Thanks. 124525



- 56146KIT

ratingratingratingratingrating by: Steve03/22/2014

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Have not yet installed however shipping was lightning fast and product appears to be good quality with adequate instructions. Customer service when ordering was very helpful getting me pointed at the correct item.121722



- 56146KIT

ratingratingratingratingrating by: Fernando02/13/2014

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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



- 56146KIT

ratingratingratingratingrating by: Nathan Hetcel01/25/2014

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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

ratingratingratingratingrating by: Robert01/20/2014

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Works perfectly! Shipping was fast and service was excellent. Be prepared to run a power cable (provided) from the converter box (also provided) in the trunk to thr battery under the hood. Great product. two thumbs up!114196



- 56146KIT

ratingratingratingratingrating by: David G12/22/2013

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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

ratingratingratingratingrating by: GunnerJ11/16/2013

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GREAT high quality all around for the device, wiring, etc. BUT the tester that is touted as a great extra included in the kit is a total embarrasment to Etrailer. It is of such low quality I'm surprised they include it at all. I reccomend the kit anyway.107560



- 56146KIT

ratingratingratingratingrating by: Dave S.08/10/2013

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The product was exactly as described, and installed with no problems. It took me a bit longer to install because I am extremely fussy, and wanted the wiring to be completely hidden from view in my 1998 Volvo S-90. 94302



- 56146KIT

ratingratingratingratingrating by: Paul H08/09/2013

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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



- 56146KIT

ratingratingratingratingrating by: Greg H.07/15/2013

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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



- 56146KIT

ratingratingratingratingrating by: john sherlock07/08/2013

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I have confidence that this set up is professional . It took a few minutes to figure out, but the on line video was helpful. Install time was about 45mins, I recommend getting the upgraded T connectors to save yourself some valuable time. shipping was quicker than expected!88201



- 56146KIT

ratingratingratingratingrating by: Harry S.07/01/2013

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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

ratingratingratingratingrating by: K. Elliott05/30/2013

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Simple Install, Straight foward instructions, And everything you need included !!! Installed on a 2004 XC70 Volvo I would highly recomend this product !!! Excellent service from Etrailer !!! K.Elliott82580



- 56146KIT

ratingratingratingratingrating by: Frank M05/20/2013

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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



- 56146KIT

ratingratingratingratingrating by: Martijn S.05/10/2013

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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

ratingratingratingratingrating by: Joe W.04/26/2013

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I ordered the 56146KIT for installation on my 2012 VW Jetta TDI. The package came with everything I needed and installation was very simple. etrailer was prompt with shipping and provided additional resources should I have trouble (I didn't). I am extremely satisfied.77900



- 56146KIT

ratingratingratingratingrating by: Robert04/21/2013

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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



- 56146KIT

ratingratingratingratingrating by: Jesse04/15/2013

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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



- 56146KIT

ratingratingratingratingrating by: Alan03/30/2013

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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

ratingratingratingratingrating by: soccerdad03/02/2013

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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 http://www.etrailer.com/Custom-Fit-Vehicle-Wiring/BMW/X3/2004/56146KIT.html?vehicleid=20049943. 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

ratingratingratingratingrating by: Roger02/13/2013

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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



- 56146KIT

ratingratingratingratingrating by: Joel11/27/2012

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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

ratingratingratingratingrating by: BMW x307/19/2012

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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



- 56146KIT

ratingratingratingratingrating by: M. Yilmaz05/23/2012

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I used this wiring package in a 1999 Mercedes e430. Though I was nervous about successful installation, everything that was needed had been included in the package. I am happy that the installation was successful. Thank you eTrailer.com; I now know where to go for all my trailer needs. 41438



- 56146KIT

ratingratingratingratingrating by: Anthony05/22/2012

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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

ratingratingratingratingrating by: dg11/25/2011

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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

ratingratingratingratingrating by: DW08/29/2013

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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

ratingratingratingratingrating by: Dave Updegraff06/14/2013

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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



- 56146KIT

ratingratingratingratingrating by: Chris D.04/29/2013

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The kit includes everything you will need to install the modulator on a ML-350. It is a perfect fit and they do not short change you on any wiring length, ties or wire connectors. If it wasn't for the video from eTrailer I doubt I would have been able to install this product so quickly and correctly. 78289



- 56146KIT

ratingratingratingratingrating by: Tim F04/26/2013

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Everything relied reliably and installed perfect! The diagrams they included were really helpful and I was able to complete the install by myself which is saying a lot for a guy who is no good at all at electricity. I definitely recommend and plan on doing business with this company again.77938



- 56146KIT

ratingratingratingratingrating by: 2006 X3 Trailer Hitch Install - harness10/15/2012

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Watch a youtube video to learn proper harness routing. There is a grommet already in place for the factory kit.57250



- 56146KIT

ratingratingratingratingrating by: Steve D04/13/2014

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Easy to install 124809



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ratingratingratingratingrating by: Rick T04/10/2014

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Great communication, speedy delivery. part installed as directed, everything I needed came in kits!124618



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ratingratingratingratingrating by: RANDY R04/10/2014

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JUST INSTALLED T WORKS PERFECT TOOK ABOUT 1 HR FOR ME TO INSTALL124602



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ratingratingratingratingrating by: Marco G04/08/2014

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Great product worked as described. 124249



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ratingratingratingratingrating by: Nicholas R.03/28/2014

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Bought 56146 kit online on friday showed up at my house on tuesday. Installed kit on Toyota Tundra works perfectly. Thank you etrailer.122677



- 56146KIT

ratingratingratingratingrating by: Roger W. (TN)03/27/2014

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Easy install instructions. I also used the video instructions from Youtube-etrailer with a model year close to mine, very helpful.122502



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ratingratingratingratingrating by: Terry Young03/21/2014

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great service good product very satisfied 121696



- 56146KIT

ratingratingratingratingrating by: Richard C. Wagenaar03/17/2014

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SUPER EASY TO INSTALL. A PLEASURE DOING BUSINESS WITH THIS COMPANY. VERY KNOWLEDGEABLE AND HELPFUL.120953



- 56146KIT

ratingratingratingratingrating by: C.B.D.03/10/2014

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great kit 120075



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ratingratingratingratingrating by: Chuck B.03/10/2014

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Every thing works, someone could-have told me the brake lights were LEDs and did not have a removable lamp holder, other than that the install went very good.120008



- 56146KIT

ratingratingratingratingrating by: Brian D.02/27/2014

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No problem - very easy to hook up. Excellent service - received this earlier than expected. 117844



- 56146KIT

ratingratingratingratingrating by: Bruno V.02/21/2014

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Installed the wiring harness on a 2000 Mercedes E320 Wagon. Great kit and etrailer.com experience. 117105



- 56146KIT

ratingratingratingratingrating by: ajtexas02/15/2014

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Even though I maid an error when ordered. what i received was top of the line .116614



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ratingratingratingratingrating by: Jimmy L01/23/2014

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Easy install. 114540



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ratingratingratingratingrating by: Steve W12/02/2013

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I like the T connectors better but this was all that was available. 108862



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ratingratingratingratingrating by: Mvalore11/22/2013

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Great kit had everything you need including tester. Works perfectly easy to install following detailed instructions.108160



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ratingratingratingratingrating by: Rick R.11/05/2013

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Perfect fit, fast shipping. Thanks. 106414



- 56146KIT

ratingratingratingratingrating by: kenneth thomas10/22/2013

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the wiring kit came with everything i needed ,it was easy to install and it is working great.i would recommend the product to anyone that needs a wiring harness for their mercedes.104688



- 56146KIT

ratingratingratingratingrating by: Bob10/19/2013

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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



- 56146KIT

ratingratingratingratingrating by: Mike B09/23/2013

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The product works well with my 09 Volvo XC70. The wires from the converter box that interface with the car could be a little longer (12"??) to make it easier to install and maintain.101011



- 56146KIT

ratingratingratingratingrating by: Jim C09/08/2013

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Very easy to install 98923



- 56146KIT

ratingratingratingratingrating by: james ashman08/30/2013

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when i get done with the jop, i will let you know,jim 97600



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ratingratingratingratingrating by: Jim B08/21/2013

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Great product,easy ordering,Free shipping!,and it arrived one day earlier than expected. Thanks so much.96255



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ratingratingratingratingrating by: ALAN K07/29/2013

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GREAT PRODUCT INSTALL WAS EASY EXCEPT WIRE TO RIGHT SIDE TAILLIGHT WAS SHORT BY A FOOT. FAST SHIPPING92247



- 56146KIT

ratingratingratingratingrating by: Ren P.07/29/2013

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This kit was really easy to install and the wire splicing is made very easy with the clamps.92130



- 56146KIT

ratingratingratingratingrating by: S. G.07/09/2013

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The product was very easily installed and was great quality. The simple test light made the install tremendously easy.88421



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ratingratingratingratingrating by: P. Marcil07/08/2013

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Excellent kit installs easily with everything included. The Installation video was again very clear making the job easy. 88374



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ratingratingratingratingrating by: Doug F06/12/2013

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Installed easily works great 84244



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ratingratingratingratingrating by: Rick C05/18/2013

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Easy install, decent directions, works well so far. 80899



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ratingratingratingratingrating by: Russ05/10/2013

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Everything was included that was needed. Instructions were great for someone like myself who has limited knowledge of this kind of installation.79698



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ratingratingratingratingrating by: Lawrence Stearns04/23/2013

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Working just great, thank-you! 77399



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ratingratingratingratingrating by: Conrad04/15/2013

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Easy installation, and so far has lasted longer than the "Valley" brand that I had previously used.76223



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ratingratingratingratingrating by: ROBERT02/11/2013

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great product, it has everything you need to wire a trailer set up. Double sided tape not the greatest but it could be that i didnt clean the surface good enough.65661



- 56146KIT

ratingratingratingratingrating by: Darel D.11/22/2012

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Other than free tester not working product was exactly as described. I did not buy product for tester and have my own so once wires were located install was easy. Did not set off any alerts in car. Would recomend.59922



- 56146KIT

ratingratingratingratingrating by: Russell c11/13/2012

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Great quality gives you everything u ne ed59374



- 56146KIT

ratingratingratingratingrating by: Darren R.09/20/2012

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I am very satisfied with the prompt and professional service with etrailer.com...55235



- 56146KIT

ratingratingratingratingrating by: Scott I08/27/2012

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I got the tail light converter on time and as advertised, next day shipping, Thanks! Product is working great!53251



- 56146KIT

ratingratingratingratingrating by: bonnie08/16/2012

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fine 51876



- 56146KIT

ratingratingratingratingrating by: Pat08/09/2012

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Great product! Does not throw a light out code for my BMW 135i! VERY EASY INSTALL. Comes with everything you would need. No soldering required! Would recommend this to anyone...51097



- 56146KIT

ratingratingratingratingrating by: Rod E07/24/2012

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Wiring was easy to install once the panelling was removed, instructions were easy to follow and things worked well without any problems. Thank you etrailer49219



- 56146KIT

ratingratingratingratingrating by: Richard S07/03/2012

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Product arrived sooner than expected and was safely packed. Delivered to all expectations for quality and service. Would recommend to colleagues!46656



- 56146KIT

ratingratingratingratingrating by: John K06/06/2012

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The hitch was well packed and arrived on schedule. When I called seeking information the rep provided the information quickly. Will recommend to all my friends who have vehicles to buy here. Thank you for the outstanding service.43083



- 56146KIT

ratingratingratingratingrating by: Michael W.05/30/2012

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Very fast shipping and great customer s ervice!42089



- 56146KIT

ratingratingratingratingrating by: scott01/14/2012

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wiring kit was excellent, no error messages or codes thrown on my car. 2006 bmw x3 msport29711



- 56146KIT

ratingratingratingratingrating by: Jacj Y.12/10/2011

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Excellent service easy instructions and quality material. Customer for life27961



- 56146KIT

ratingratingratingratingrating by: Jack q.12/09/2011

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I eexpected a well built trailer hitch, but the one you sent me as beyond what I expected. I wil recomend this item everyone and you have a customer for life.27918



- 56146KIT

ratingratingratingratingrating by: ben s01/30/2012

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supper easy to instal worked first time around!!30578



Ask the Experts about this Curt Wiring
Expert Answers about Curt Upgraded Circuit Protected Tail Light w Converter Hardwire Kit - 4 Pole End (Includes Tester) - 56146KIT                                          Do you have a question about this Wiring?


  • What Parts are Needed to Wire a 2007 Ford Escape to Tow a 4-Way Trailer
  • On the 2007 Escape, a converter must be used. We offer a custom fit harness, part # 118426, that converts the 4 wire system on the vehicle to a 3 wire system for the trailer. This harness also includes a power line that attaches directly to the vehicle battery. This allows the converter to power the trailer lights with a direct battery feed, rather than drawing power from the Escape tail lights which can be a problem in the event of a short circuit.
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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 signal (
    view full answer...

  • Trailer Wiring Harness for 2002 Lexus IS 300
  • According to our friends at Curt Manufacturing, part # 56146KIT is the correct wiring harness for your Lexus. The # 56201 is designed to be used with a multiplex wiring system like those found on some newer vehicles, and would not work correctly with your Lexus. The harness would install as follows. The included circuit tester is used to test the circuits in the wiring harnesses that feed the rear tail light assemblies. As each lighting function is activated, use the tester to test each wire
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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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  • Installation of Curt Circuit Protected Tail Light Hardwire Kit # 56146KIT on a 1999 Mercedes E300
  • The Curt Circuit Protected Tail Light with Converter Hardwire Kit, part # 56146KIT, will install on your 1999 Mercedes-Benz E300 as follows. The included circuit tester is used to test the circuits in the wiring harnesses that feed the rear tail light assemblies. As each lighting function is activated, use the tester to test each wire looking for the wire that is showing current. The green wire taps into the right turn circuit, the yellow wire to the left turn, the brown wire to the running
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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, left tur
    view full answer...

  • 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 Power
    view full answer...

  • 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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  • Finding The Correct Wires To Install CURT Custom Fit Wiring # 56146KIT on 2009 Jetta Sportwagen
  • To determine which wire to connect the wires of the CURT Custom Fit Wiring # 56146KIT, you will need to use the included circuit tester to test each wire for signal. The White wire of the CURT wiring kit is ground and should be connected to a clean metal surface. The remaining wires coming out of the converter box will need to be connected to the wire that carries the corresponding function. In addition to connecting the correct wires, you will then need to run the power wire to the front of
    view full answer...

  • Wire Colors for Installation of Trailer Wiring on a 2002 BMW 525iT
  • I did a bit of research and could not find any wiring color diagrams for the 2002 BMW 5 Series. We have not had the opportunity to wire an 2002 525iT yet so we have not had the opportunity to do the testing and list the wiring colors that need to be used. Your best bet is to use a circuit tester like the one included with the wiring kit, # 56146KIT, that you purchased and determine the correct taillight wires to splice to the converter wiring. The information that CURT Mfg. supplies is that y
    view full answer...

  • 1996 Lexus LS400 Tail Light Wire Colors
  • I do not have any information regarding the exact wire colors, but I can certainly tell you how to easily determine which circuit controls which function. Use a circuit tester, like part # 40376, or if you are using the Curt Circuit Protected Tail Light Converter, part # 56146KIT which is the recommended wiring harness for your Lexus, probe each wire behind the tail light assemblies to determine function. Have a helper activate the left turn signal, then use the tester to probe the wires beh
    view full answer...

  • What Does the 12 Volt Power Wire Do on the 2012 Honda CRV Wiring Kit by Curt
  • The purpose of the 12 volt power cable that gets run to the battery of your 2012 Honda CR-V is to protect the delicate tail light wiring circuit. It does this by only using your tail light circuits as signal wires and using the power it gets from the battery to power the tail lights. This prevents the tail light circuit from being overdrawn. You will need to run this wire or the Curt Wiring Harness # 56146KIT will not function. I attached an FAQ on running this wire for you to check out. I
    view full answer...

  • Trailer Wiring Harness Options for a 2012 Honda CR-V
  • Both trailer wiring harnesses for a 2012 Honda CR-V, see link, require tapping into the vehicle tail light wiring to function. A plug and play type of harness is not available. There is actually a federal law called the Federal Magnusson-Moss Warranty Act that states, in part, that your warranty will still be honored unless the part installed caused the malfunction. I have included a link to the installation instructions for the wiring harness and a link to an FAQ article that should be help
    view full answer...

  • No Brake or Left Turn Signal on Curt Wiring Harness # 56146KIT on 2001 BMW 540IT Wagon
  • The first step that I would take to troubleshoot this issue is to check that the converter is grounded to a clean, bare metal surface. A poor ground connection can cause many different issues. Once you verify that you have a good ground connection, then you will want to move to the 6 wires going into the converter box. Your 2001 BMW 540IT Wagon has a 3-wire system, meaning you should have one wire dedicated for the turn signal, one wire for the brake signal and one wire for the running light
    view full answer...

  • Wire Harness Recommendations for a 2008 Kia Sorento
  • If your 2008 Kia Sorento comes with a factory tow package, I recommend the Curt Wiring Harness # C56151. This harness has two connectors on it with one using the existing factory-installed harness to obtain 12-volt power from the battery and the other providing the lighting signals. If it does not, the Curt Wiring Harness # 56146KIT you made reference to will work. This connector will need to be hardwired into the existing wiring using the supplied circuit tester to find the proper circuits t
    view full answer...

  • Where Does Curt 4-Way Wiring Kit 56146KIT Connect on a 2010 Volkswagen Jetta SportWagen
  • You will need to hardwire to install trailer wiring on your 2010 Volkswagen Jetta SportWagen using the 4-Way wiring kit # 56146KIT by Curt. The wires on the harness will be connected directly to the wires behind the tail lights on your vehicle using splice connectors. You will use the included circuit tester to figure out which vehicle wire carries each of the different functions for the harness and make the connections accordingly. There is also a power wire you will run to the engine compar
    view full answer...

  • Recommendation for Trailer Wiring Harness for 2012 Honda CR-V
  • According to my research, the Top Hat trailer uses a standard 4-pole trailer connector. Although the Curt Custom Fit Wiring Harness # 56146KIT would be a good fit for your 2012 Honda CR-V, I would recommend the Tow-Ready T-One Wiring Harness # 118561. It requires no splicing into the wiring system and is a solid one-piece construction. It can be used with 5-, 6-, and 7-pole adapters, and is quick and easy to install. I have provided links to the installation instructions for this item as wel
    view full answer...

  • Does a 2007 Mercury Mariner Require a 3-Wire to 2-Wire Converter for Trailer Wiring
  • The Curt wiring harness # 56146KIT is a universal fit and you can use it no matter what the wiring situation is on the vehicle. A 2007 Mercury Mariner does appear to have a 2 wire system. You would attach the combined brake and left turn turn signal wire to the converter yellow wire. On the right side attach the combined brake and right turn wire to the green wire on the converter. Brown on the converter is for the running light wire. White is ground. You will ground the red brake wire from the
    view full answer...

  • Tow Bar and Wiring Harness Recommendation for a 2003 Land Rover Discovery
  • I did some research on your 2003 Land Rover Discovery and I could not find any information regarding the ability to flat tow your vehicle. I recommend checking your owners manual to make sure it is safe to flat tow your vehicle behind your motor home. Vehicle manufacturers will often place restrictions on vehicles when towing them behind another vehicle or motor home. If you find that it is okay to tow your Discovery, then you will need tow bar wiring like the Roadmaster Universal Wiring Kit
    view full answer...

  • Trailer Wiring Harness Recommendation for a 2012 Kia Sorento
  • The main difference between the Curt Modulite Wiring Harness, # 56146KIT, and the Curt T-Connector Wiring Harness, # C56163, is that the T-Connector harness, # C56163, simply plugs into the factory tail light connectors at the back of the tail light assemblies. The Modulite Harness, # 56146KIT, will need to be hardwired into your vehicles tail light circuits. I would recommend using the T-Connector Harness # C56163 because you will not need to cut or splice into your vehicles tail light wire
    view full answer...


Lexus LS 400 Accessories


Info for this part was:


Test Fit:
Joe V

Expert Research:
Michael L

Video Edited:
Zack K

Expert Research:
Sarah L

Video by:
Andrew K

Expert Research:
Robert G

Expert Research:
Michael H

Expert Research:
Jeff D

Expert Research:
Reno H

Expert Research:
Jameson C

Video Edited:
Joshua S

Test Fit:
Nicholas E

Expert Research:
John H

Expert Research:
Brandon M

Video Edited:
Andrew L

Test Fit:
Shane T

Expert Research:
Lori W

Video by:
Alan C

Video by:
Chad S

Video Edited:
Chris R

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