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Convert your 3-wire PMW or multiplex vehicle system to a 2-wire trailer system so you can tow with this powered tail light converter. Includes a 4-way trailer connector. Works with LED or incandescent bulbs.
Features:
Specs:
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today on this 2001 BMW X5 we are going to install part number 119190. We are also going to use part number 118151 and that is going to be the install kit. The first step is to get inside the vehicle because that is where the wiring harness is and basically what we are going to do next is remove the interior panel before we can get to the wiring itself. We are going to take out the two side panels. The first thing we are going to do is find a wire harness that actually goes directly into the tail light and there is a socket that goes into it so disconnect that, there is a little tab right in the middle. 00:35
The first thing we will do is test for the functions of the wire. We are going to do one circuit at a time. First off we will start with the running light circuit and we are going to test on the inside of the plug and we will see which color does what. It looks like it is going to be the gray and purple wire so we are going to take our running light wire from the modulite which will be brown and we are going to connect that to the wire. We will be using the quick splice to do that with and that will be part number 564. 01:05
We will move on to the next circuit. The left turn looks like a green and blue wire so the left turn for the module is going to be yellow and we will hook it up the same way we did before. Next we will look for the stop light wire. Off, on, off. It looks like the brake signal is going to be brown and black. Our stop light wire on the module is going to be red. Reinstall the wire harness back into the tail light and take the white wire and ground it to the body. Use a ring terminal to do that with. Next we will deal with the green wire and that is going to go to the right turn signal so take the green wire and route it over to the right side of the vehicle along the factory wire harness. We are looking at the passenger side and disconnect the tail light harness. Just like before we will test for the right turn signal. The right turn looks like the blue and brown wire. We can reinstall the wiring back into the tail light. Back over on the driver side of the vehicle we will hook up the black wire coming out of the modulite and basically we are going to take our wire from the 118151 kit and we are going to connect the two together and the black wire is going to be ran to the battery. Leave that wire alone for now and lets mount our module up somewhere inside the vehicle. There is a nice spot right here and they do not come with the kit but we will use a couple of cheap ones just to hold everything in place. 02:59
To get access to the battery we are going to have to remove the spare tire. Take this and roll it off to the side and now we have access to the battery. What we will do now is take the black power wire to see how much length we need to go down to the battery. We did not use much but we will cut off our excess and we will follow this a little bit like the green wire, that will be about right, and on the end of the black wire we will install the fuse holder. In one side we will add the ring terminal and the other side we will add the butt connector. Add this to the black wire and now take the ring terminal and we are going to add this to the positive side of the battery. Sneak the lead underneath the structure right here however I think we will put a notch right next to the plastic case because we will run the wires straight out that way we have easy access to the fuse if you ever change it. Now we are going to install the 15 amp fuse 118151 kit comes with a 10 amp fuse and that will be replaced with by this 15. We will take come zip ties now and zip tie the wires safe and out of the way. At this point we can reassemble the interior of the vehicle. To use the wire harness pull a little bit of it out and shut the door on it because the seal is thick enough where it will not hurt anything when you shut the lid. Just to make sure you stay away from the latch, pull out what you need to go out to your hitch. With that that will finish our install of part number 119190 and part number 118151.
Ratings & Reviews
Very easy to install and works great
works good
Easy fix for the dodge ram trailor light internal fuse problem. A lot cheaper to use this product than 400 for a new fuse box from Dodge. Customer service was very nice helping me out.
Product was easy to install. Took about and hour.
The product was delivered overnight just as requested.
It is so difficult to find a company nowadays who not only will have the products in stock but that will also ship them as you have requested. Even though I requested overnight shipping on the product, I was honestly not expecting it to arrive until a couple of days later. I was presently surprised when it arrived the next day.
Excellent ServiceI ordered a heavy duty modulite wiring harness. It was processed and shipped to me in a very prompt time. Could not be happier with e-trailer. Will recommend them to all.
Had some issues with my previous three wiring harnesses. Excellent customer service by etrailer led me to this harness. Over 90 hours of pulling with this harness and no issues, no shorts, and still working.
I purchased this product to convert the 3 way tail light system in my Freightliner FLD 120 truck/tractor to use for my agriculture trailers that use a 2 way light system. I have several trailers I use and each of them have a lot of lights, so I needed a powered converter. I had tried using a non-powered converter first, and the hazard lights would not flash since the tail lights exceeded the maximum 2.1 amps of the converter. This product has a maximum limit of 4.2 amps and meets the amperage requirements for the conversion. I have converted my Freightliner to haul gooseneck style trailers which come wired with electric brakes and a 7 pin RV connector. I installed the converter up in the dash area of the truck connecting to the wires located there. The RV connector is not compatible with the 7 pin commercial truck wiring so you have to make some wiring changes in addition to the conversion from 3 way to 2 way. But as to this product, it works great. I needed my converter shipped overnight because of a time factor on a must have basis, and eTrailer did just what was needed and the product arrived as promised. Also eTrailer had a tech contact me personnally to answer some questions about another product I had purchased from them over 5 years ago and was most helpful on that issue. As far as my opinions go, this company is great to do business with and I would highly recommend them for your trailer and wiring needs. They know their product, believe in customer satisfaction and customer service, and can solve your trailering problems and issues.
This Circuit Protected wiring harness is essential for use on any BMW that has not been factory pre-wired for a trailer. These cars are prone to electronic board failure ($4000.) if a standard wiring harness is used...do not do it - it will void the car warranty.
This product is the only one I found that is suitable. Beware that there are others on the marketplace that are similar but do not provide adequate protection to the vehicle wiring and circuits.
U-Haul has a very good one that actually has an LED feature on the 4-Flat plug that makes it simple to verify that each of the wires are connected properly and functioning however theirs does NOT provide protection when both brake and tail lights share wires.
This review may not make sense to some readers but your BMW dealer and any knowledgable trailer hitch installer/supplier will know exactly the importance of using this exact product.
Great product, very fair price and very quick delivery from etrailer.
The green wire for the pass side turn signal needed an extension if you have the rear cd changer and navigation dvd rack. 2006 BMW x5. Otherwise easy install takes about 1.5 hrs
After a lot of head scratching, looking for shorts, internet searches, and checks with my meter, I finally figured out that my camper tail and marker lights were dim because of low voltage. My 2000 Ford Econoline Van didn't have the trailer towing package. So, Ford ran the thinnest wiring to the tail lights which, of course, couldn't carry the voltage necessary to the camper.
After another search on the internet, I came across your wonderful site. You had exactly what I needed to solve my problem. The videos and descriptions on your website convinced me of the product I needed. The Q&A sections are awesome as well!
The only negative on the product was the wiring to the right turn/brake light wasn't long enough for my van, but that was an easy fix with some solder and another length of wire.
I also ordered the ModuLite Installation Wiring Kit, Item # 118151 to run from the Modulite module to the battery. Twenty feet of wire wasn't enough to get to the battery through the interior of my van, but did get me to the front of the engine compartment. Again, hardly a problem as I had a length of 12 gauge braided wire to complete the lateral run across to the battery.
The Valterra Electrical Cable Hatch for RVs - 4-9/16" Diameter - White Item # A10-2137VP was a perfect drop-in fit on my '92 Jayco.
Your website is great and I will recommend you to anyone that needs parts or advice for their trailering and camping needs! Fast, accurate shipping, expert advice in the form of videos, descriptions, and Q&A, phone advice (if you need it), along with a great selection make ETrailer the BEST. THANKS!

Young D.
6/17/2019
All working as they should.
After one year of use, my "Tow Ready" is working fine. The trailer lights are bright and the Tow Ready unit has not affected my Sprinter van's current monitored rear light wiring. My only wish is that the turn signal and brake lights were two different bulbs and not combined into one. (I like yellow turn signals on my trailers with separate red brake lights.) With this Tow Ready unit, the brake light flashes on and off when the turn signal is on. Other than that, its perfect. Todd from Wisconsin.

Todd
5/4/2017
All is still good with my Tow Ready. The trailer lights are working fine. Glad I bought it.
I have a 2012 VW Golf TDI. It has very strange wiring, but does work with this Modulite (119190). The issue is that my Golf has a 2 wire setup, but it is the running and brake lights that share bulbs, not the turn signals (it is possible to pick up individual signals for the running lights from the car's license plate light and to use the center brake light...but it's hard to get to them).
But, I was surprised in my testing that this converter works fine like this. I used the red wire for picking up the combined brake/running signal, and left the brown wire unconnected (however, I will go back and ground it). Turn signals hook up normally.

Roger
6/9/2014
Still working great 18 months later.... I dont use the trailer that often, but its nice that the lights always work when I hook it up!
First, as to the product: As others have commented, the lack of installation instructions was a little disconcerting. George helped me find the directions online, and everything went well from there. The installation took me about 1 1/2 hours, and I don't work fast.
This was a replacement for an older, cheaper Hopkins converter. That one had developed the habit of blinking both turn signals anytime the brake lights were also on. The Tekonsha fixed that, and, as a bonus the brake and turn lights are brighter now.
Turning to customer service, in most things etrailer is great. I ordered with two day shipping, and the product was shipped immediately and came via UPS in two days. George was very reponsive to my request for directions emailing a response in an hour. The one disappointing thing was when I called the number after "Call to talk to a product expert", not only did I not get a product expert, the CSR didn't really comprehend what I was asking about. However, she got Bill to call me back, and he answered my questions competently.

Randy C.
9/8/2018
Pretty good, but not perfect. After a few months use, I started noticing the same problem I had with the Hopkins - the off-side lights blinking alternately with the on-side. But faintly. I dont think its enough to be a safety problem, but a little discouraging nevertheless.
This product solved the problem of my 2017 F 350 thinking it always had a trailer attached when it didn't. I have additional lighting on my truck, and the truck was "sensing" a trailer was attached. By adding this unit, the truck is back to normal.

Marc L.
4/2/2018
Still working, no issues.
Super easy to install in my existing system, so I can haul pickup truck trailers with my semi tractor. All lights on the trailer work as they should. However, I'm getting a weird feedback, in that my trucks 2 side marker lights are now lit any time the trailer is connected. I need to do a little wire chasing to find the fault, but I hope it's not this unit- shouldn't be since it's designed not to allow feedback. I will update my review when I figure this out.
Worked great. Took little time wiring together but beats paying $700 for a new fuse box on my 2003 Dodge 2500 just to have a right turn and brake on my 7 pin trailer connector
Ordered a similar product for my truck based on a Q&A from this site. Upon receiving the product I found it to be the wrong one. The customer service person was extremely helpful in getting me the right item, rush shipping included and sending me a prepaid return label for the incorrect item. Unit installed as specified and works great. I have tried it on two separate trailers with no issues.
Great simple wiring system to replace my old worn out and patched-a-hundred-times wiring. Worked great. Not only good products, but the e-trailer guys are easy to work with, always helpful, and ship super fast. They are my go-to resource for all my trailer parts.
I used this connector on my Victory Vision motorcycle. The device has work worked as expected. What Im very disapointed with, the unit did not come with any instructions, wire identification would have been helpful.
I’m highly satisfied and love the extra effort they did when the US post office lost my package. They made sure I was 100% satisfied even though it wasn’t their fault.
The trailer wiring for my Audi Q7 works as described and is great.
Excellent product! after 1 year I am happy to save hundreds of dollars, Audi dealer was asking a lot for the module, and with this product after watch the video I knew will be easy installation.
I highly recommend this product. My was installed in an old Audi q7 2007, thanks again.
Quality product, easy installation. Great service from etrailer.
Installed and works great!
Previously bought a Hopkins converter and it did not work with my truck despite the packaging and retailer saying that it was the correct one for my truck.
After hooking up the ModuLite to my truck every thing shined like magic.
Thanks again for the excellent product.
Competitive prices, professional advice, fast shipping !
Exactly what I needed. Great customer s ervice!!
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Doug K.
7/11/2015
Mike, I have a BMW X-5 as well but I am not sure which wires to connect to. It appears they use the same wire for the brake as the tail light. Cant figure out the reverse light either? Can you help me?