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This ModuLite harness offers peace of mind by including circuit protection to safeguard itself and the tow vehicle from harmful electrical shorts and mis-wire situations. The upgrade also includes the ability to work with PWM on vehicles.
Features:
Warning: Overloading circuits can cause fires. Do not exceed:
Read vehicle's owners manual and instruction sheet for additional information.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Today, we're going to take a look at the upgraded heavy duty Modulite circuit protected vehicle wiring harness with the installation kit. This kit will power your trailer's stop, turn, tail, and running lights, directly from your tow vehicle's battery. Virtually eliminates any draw on your vehicle's tail light circuit. The short circuit protection will safeguard itself and the tow vehicle against any harmful electrical shorts or miswire situations.The tail light circuit has been upgraded to work with vehicles using PWM, which is pulse with modulation, allowing this converter to fully turn on, giving your trailer lights full brightness during activation. It will automatically self reset. The unit does prevent feedback from trailer to your vehicle system.This kit may be used on two and three wire system.
It will adapt a three wire system on the towing vehicle to work with a two wire system that's on your trailer. When used on a two wire system, all you need to do is take this red brake wire here and ground it. This will work on vehicles and trailers with either LED, incandescent, or standard bulb tail lights. It is designed to work with most multiplex wiring system.The kit will include everything laid out here on the table. Start with here, this is the circuit protected tail light converter.
You notice it has the bonded wire with the 4-way on it that extends out toward your trailer. That's about 60 inches long, and you notice it does have this nice integrated cap that goes over the 4-way. So when you're not plugged in, you just put that over the terminals, protect it from any damage or from the elements. The wire pigtails right here that connect and connect to your wiring, these measure about 18 inches long. They do have a white wire with a ring on it that'll connect to your ground.
If you don't have a ground nearby, they do include a grounding screw so you can ground it. And then this black wire coming out of your converter is what'll run to your vehicle's battery.To run it to your vehicle's battery, they do include this Modulite install kit to help run everything. It gives you 20 feet of 12 gauge wire, in line fuse holder, because when you do connect to your battery, you don't want to run it directly to it, you want to run it through this fuse holder. They do also offer 10 amp and 15 amp fuses, ring terminals for your connections, a butt connector, a grounding screw I mentioned, even some cable ties that take up any slack in the wiring, and a nice set of detailed instructions on how to hook everything up.The other nice thing is they do offer this circuit tester, it's included. And what's that's nice for is when you go to connect these wires from your Modulite to your vehicle, you don't always necessarily want to connect color to color all the time.
You do want to test the functions. So this circuit tester is what'd be used for that, is you test the function on your car and hook that function to the correct function on this harness here. And then they include the five waterproof self-stripping wiring connectors, so when you make your connections, you can use those.Now, a few specs on this, the maximum stop and turn light circuit is 4.2 amps per circuit. The maximum tail light circuit is 7.5 amps.That should do it for the review on this upgraded heavy duty Modulite circuit protected vehicle wiring harness with the installation kit.
Average Customer Rating: 4.7 out of 5 stars (256 Customer Reviews)
This ModuLite harness offers peace of mind by including circuit protection to safeguard itself and the tow vehicle from harmful electrical shorts and mis-wire situations. The upgrade also includes the ability to work with PWM on vehicles.
I installed this 119190KIT into my 2015 Toyota Prius Plug-In Hybrid. I could find no review that addressed installing into a Plug-in Prius Hybrid. There were several reviews of various years of standard (non-Plug-In) Praises, but no reviews for a Plug-In. The eTrailer webpage video for 119190KIT (https://www.etrailer.com/Custom-Fit-Vehicle-Wiring/Tow-Ready/119190KIT.html) has links to 4 other videos, none of which is for a Plug-In Prius (PIP), but one or more of them shows how to test and splice wires just like in the 119190kit. The video for the 2013 BMW X3 shows how to use the tester at the 2:48 mark. This tester was essential. I used it to determine which lights were connected to which wires. Do NOT rely on any videos to determine which color wire connects to which light (tail, brake, left turn, right turn). Instead, follow EXACTLY what the instructions sheet tells you. The first step was to determine which color wires in my PIP connected to which lights in the PIP’s rear tail area. When you use the tester, you MUST push the metal pointed tip directly and forcefully into the center of the plastic sheet encasing the wire. If you do not penetrate fully, you won’t get the tester’s light to come on when you press the car’s brake pedal or light switch or turn signal lever. A video that shows the internal compartments for a Prius is at this link: https://www.etrailer.com/tv-install-trailer-wiring-2010-toyota-prius-118505.aspx It's not a Plug-In model, but it shows a lot of spots that are identical nonetheless. I found that there was not a lot of slack in the wires in the PIP’s taillight assembly, but there was enough. The video below shows a 2010 Prius and how to remove the rubber seal - at about time stamp 0:30+. A good spot to screw the ground into the "doubled sheet metal" is at 2:03+. A good segment to show putting the wires under the back side of the hatch starts at about 3:00 and runs until about 3:22+ and also at 3:30 it shows how/where the banded 4-pole wire will go into a lower compartment, to be stored until need to attach to a trailer. 3:53 - 4:41 shows running wire over to the other taillight. From 5:10 to 6:20, it shows hooking up to the battery. https://www.etrailer.com/tv-install-trailer-wiring-2010-toyota-prius-c56147.aspx This video shows a 2014 Prius V.... https://www.etrailer.com/tv-install-trailer-wiring-2014-toyota-prius-v-118610.aspx It shows the actual part that I have to connect - 118151 which includes the yellow "circle" wire. Go to time 5:00. It shows the yellow loop (aka, fuseholder) in the kit and how to install it at around time 5:42+ thru 6:23 and beyond shows attaching the yellow to the positve battery pole at around 6:40 to 7:00. Shows adding fuse to fuseholder at 7:13+. At 7:30, starts to show attaching the ground wire to the "factory ground. Through and past 9:20 shows zip-tying all wires. Here's another video that shows splicing…..with the kit’s “no-splice” connector. https://www.etrailer.com/tv-install-trailer-wiring-2013-toyota-prius-119147kit.aspx ....at 3:30 to about 5:13. WARNING - you must use pliers as shown to connect two wires that the directions say to connect. You have to squeeze the pliers pretty hard to get the metal piece in the plastic quick-splice connector to go all the way through the plastic sheathing and then make contact with. The video does not emphasize that you have to squeeze the metal piece pretty hard. In fact, when I first used four quick-splicers for connecting and then tested to see if a connection was made, only one of the 4 quick-splice connectors resulted in an electrical connection. So, I had to open up the 3 connectors and press the metal piece inside the quick-splice connector real hard. So, be careful!! I have a moderate degree of experience with home electrical wiring, but none with car wiring. I just took my time and it all worked great!!! 274346
Fred Y - 07/20/2017Awesome product , love it. Works perfect and not complicated to install 524803
The product works great. The worst thing about it was that there were no instructions with it at all. I had to email etrailer and they in turn emailed me the instructions. Other that that no problems. Fast shipping and product is as advertised. I used this product on my Victory Vision so that I could pull my trailer. Below is a picture of where I placed it. It worked out best in my opinion to velcro it to the back of the saddle bag. It actually mounted right under the wiring harness of the bike that I had to tie into. 85345
Damon C - 12/18/2014thanks for being so helpful in switching us into this heavy duty wiring harness. The service was better than all face to face places in this type of business. My installer swapped out the modules and everything worked perfectly. I can't say enough about both customer service and the tech support that we received. There should really be a sixth star (for above and beyond)! 268702
Doug L - 01/16/2018I would have rated this better if good installation instructions were provided for my car model. If you're going to connect the 119190/119191 kit to a 2012 VW Golf, like mine, you will find that the correct wiring is from the ModuLite catalog Vehicle Code BM-1 3-Wire System (such as Mercedes R-class) - NOT the B 3-Wire System as listed in the ModuLite catalog. My VW Golf uses the same bulbs for taillights (providing 6 volts) and brake lights (providing 12volts). To make the converter work correctly, ground the brown "tail light" wire and connect the red "stop" wire to the VW wire that lights the tail light. In the three pin taillight connector (right or left side of the car) the middle wire is a ground, one outside wire is the turn signal and the opposite outside wire is the tail/brake light. Connect the red wire to the wire that is NOT the turn signal. If you follow the ModuLite B 3-wire suggestion and connect the red wire to ground and the brown wire to the VW tail light wire, the turn signals and brake lights seem to work correctly during the day (when you don't have the taillights on) but when you turn on the taillights, you don't get brake lights when you apply the brakes. 152555
I ordered a trailer wiring kit. The etrailier website was easy to navigate and I easily found the item I needed. The wiring kit arrived within a reasonable time. I used the installation video on the etrailer website, which made the install very easy. I recently installed the wiring kit, so I have only used it a few times but so far so good!! 587969
This kit was great and functions exactly as intended. With the help of the online video it was easy to install, even for people without any electrical knowledge. My only advice is: 1) watch the video and the hitch installation video at the same time. This will help you plan ahead and not re-install parts during the hitch installation, that will need to be removed for the harness installation 2) be VERY careful about selecting the right wires, by using the testing tool eTrailer provides. In the install video for my BMW X5, the technician referenced a yellow and black wire when making the initial connection. He later goes on to make a separate connection for a black and yellow wire. To the novice they look nearly identical. I confused the two wires and had to re-do this, but would not have been an issue if I had understood the distinction and used the testing tool, as recommended in the instructions 3) be careful about placing all connectors so that they face in the same direction. Does not impact function, but makes for a neater install when complete. I could not be happier about how this project turned out, and credit etrailer with all of the success. It has a very OEM look, and etrailer made the entire project doable for me through their great suite of videos and excellent Customer service. I wish every retailer could be this good! 636884
Overall Kit is good. Some of the wires on the kit need to be longer by about 12 inches as it results in having adequate length to trim. Also the kit should include butt splice connectors instead of the blue crimp (no strip connectors). These type do not work as the OEM wire is to small to work effectively with this style of connector. The power connector eyelets are too big for the battery terminals. Overall good kit. Make the changes and this would be an excellent kit. 607592
Mike L - 02/25/2019A module such as this is absolutely essential when trying to add a trailer lighting circuit to a modern CANbus equipped vehicle. The module itself works beautifully but I deviated from the eTrailer install video for my '13 Jetta Wagon. First, I used the 'poke-n-wrap' method with solder to attach the module's signaling wires to the vehicle wiring harness. I have a personal aversion to Scotchlok or vamp connections because they often fail with time and vibration. This method keeps the harness relatively compact and clean looking, especially if you resecure everything with cloth wiring harness tape. Second, no self drilling screws. I attached the module to the chassis with proper self adhesive tape like 3M VHB. The white ground wire is easily attached to the existing grounding lug on the left rear wheel well, so no self drilling screw there either. Don't poke holes in your chassis with self drilling screws if you can avoid it. I avoided drilling a hole in the spare tire well by running the power wire through the existing body plug in the area aft of the right rear wheel well. It's easy to remove the plug, drill a hole in it, and thread the wire through. Add a dab of black RTV to make sure it's watertight. When powering the module, the suggested method is to split the 1/4" ring terminal and stuff it under the nut that holds the positive battery terminal in place. Instead, I obtained an M6x1.25 nut and secured the fuse holder to a unused, unfused stud on the terminal block inside the underhood fuse block. When it's time to change the car's battery, the split ring will inevitably get deformed and may cause problems. This way, the positive terminal clamp only has to do one thing: hold onto the positive terminal. To bring the wiring harness outside the wagon I went a little off the deep end with a little sheet metal work and Molex MX150 connectors to make the passthrough watertight. I added etrailer 18140 and 18144 to mount the 4-way connector to the hitch so I wouldn't have to fish the wire out of the left-side trunk compartment and shut the tailgate on it every time I wanted to tow. 469706
The video for this installation on a 2012 Q5 was excellent. A couple of point to add. For fishing wire, a small piece of ice maker water line works great if you cant find or don't know what aircraft tubing is. Mounting the unit in the area shown with adhesive tape on is not the easiest. I would suggest removing the panel to get a proper place to mount this correctly. The door hinge has a plastic cover that is already hiding a wiring run. If you remove this, which is easy, you can run the wire with this, cover it back up, and its completely hidden. I would suggest soldering wire to wire splices rather then butt connectors. The T connectors are still the simplest and cleanest way to splice into existing wiring. 294493
I had more problem with this installation, but it had nothing to do with the kit. Just the installer (me!). I think the kit is well made and the video instruction is invaluable. I put it on my iPad and took it to the car. I referred to it many, many times. I would suggest that you watch the video all the way through and make a note of the supplies and tools you will need. I had to make a couple trips out to buy various items. But I'm glad I did it myself just so I know more about my vehicle. I also want to say that the folks at eTrailer have a great website and lots of help for installation. I highly recommend them. 556837
Install on 2018 Mercedes Benz CLA250 w/LED tail lights: There were no guides I could find so I'm posting this for other etrailer customers. These are my installation notes and the kit operates correctly. There are other ways to do this, I'm sure. It isn't necessary to remove the tail lights, there is a removable piece in the trunk carpet. I removed that and the plastic trim panel in the middle. The tail lights have 10-pin connectors. On the left there are 8 wires on the right there are 7. My thought is maybe this has something to do with the european style parking lights. After probing I found this: Left Side: Turn/Brake - Yellow with White stripe Running/headlights - Black with Orange stripe There is constant power to the Green with White stripe Right Side: Turn/Brake - Light Blue with Red There is constant power to the Green with White stripe I had to splice additional wire to mount the module where I wanted it. The final connections were: Module Brown to Left Black/Orange Module Yellow to Left Yellow/White Module Green to Right Light Blue/Red Module White to Ground Module Black to Battery Module Red Terminated (unused) The positive electrical connection I made was under the hood, off the fuse box. Terminated to one of the lugs, covered with wire loom, and run into one of the cars wire bunches. The 4-wire hitch output is terminated with a CURT tester (If you put one there, you'll always know where it is when you need to troubleshoot something) This vehicle is completely covered on the bottom and running the wire can be very time consuming if you want it to look tidy. 560841
The product works as advertised. It was nice to have a video to watch about my car as it made it significantly easier and compared to installing the hitch on a BMW X3 it was significantly easier. Unfortunately I watched a video about a 2015 version of my car while I own a 2014. The wiring looks the same but it doesn't function the same. My mistake (I needed to do a 5 wire connection instead of 4). The only issues with the kit: would be better if the wires that connect to the brake and turn signals and battery were just a little bit longer. Also, the clips that allow you to connect to the cars wires were not sized properly (too big) and if you aren't careful you can end up cutting through a car wire with the clip inadvertently which I did on one of the wires. Not the end of the world as it's fixable but it would be nice if they included multiple clips so you could pick the right one. Finally, there was only one butt end connector and you need two. These are cheap and not sure why the kit doesn't have a few of these. 498409
This wiring kit works great! However the wires were just a tad too short so I had to add extra wire and there were no instructions to be found anywhere on how to wire this up. I used the insctruction video for the Jetta and figured out which wires I needed (but my install was a 2 wire setup not a 3 wire) it took me 4 hours to install but it does work perfectly so it's hard for me to be too upset over the wiring. 108359
Easy to install on a 2014 X5D M sport with LED lighting package. For others attempting the install, here's the wiring that I used: Module X5 Yellow -> Right side (black/white) Brown -> Right side (purple) Red -> GROUND (same screw as the white wire) Green -> Left side (black/purple) White -> GROUND Took about an hour to install, the X5 has a great ground screw and place to store the module on the drivers side. Test light included helped make it easy to find the right wires (but, now that you have the above map, you won't need to find them if your truck is like mine). Great service from eTrailer, delivered quickly with all the parts. My only complaint is that this module doesn't look that good hanging out the back of the X5 when trailering, I knew that going in, and given the outrageous cost of the stock trailer system (1000+), this was a good compromise for me and anyone who doesn't trailer all that often. 145461
Mike F - 08/13/2015Was quite happy with the kit--excellent installation video for my 2104 Audi Q5 TDI Prestige. Not 5 star because: 1) the supplied test light's probe is too large to fit into the Audi plugs to test the signal, 2) the kit was missing the double stick foam tape to attach the module, and 3) the kit was missing one of the double-butt crimp connectors. I was very hesitant to use the supplied crimp splicers (bad experience for long term success before). Nonetheless I tried them. Big mistake, after firmly setting them with pliers, I gave the joint a little tug and the factory wire broke in half right at the splice (apparently the steel conducting piece severed the wire). I redid this connection and the others by soldering the new wire onto the appropriate Audi wire. I also prefer not to have loose wires running through random chassis holes. Rather than follow the video instructions to do such, I ran the wires alongside existing wire looms and used cloth tape and small wire ties to secure them against chafe or rattle. 546376
I bought the 119190KIT, TK90160, and ETBC7 based on etrailer's recommendations for my 2010 VW Golf. I came into DIY trailer electronics without a clear understanding of what I needed, so I asked etrailer what would work for my car, and they put together this well-priced and high quality bundle for me. The parts arrived quickly and in good order, and using the included instructions and some videos from this site, the installation process was fairly painless. The biggest hitch for me was that the VW MKVI runs multiple modulated signals along one wire to the tail lights, so wiring for the turn signals had to be run up to the headlights instead. The kits didn't include this information, nor enough wiring to do that extra work, but it didn't set me back very much more. Great service, great products, and lots of excellent information on this site. I'll definitely be an etrailer customer for any more trailer stuff! 423912
Michael B - 08/23/2018Easy to install and works as advertised. 574596
Kit was missing butt wire connector. Double sided tape is NOT included in kit to mount module. I thought it would be included based on their install videos. 568707
Works Perfectly up to this very day. Put this on my 2010 BMW X5 35d and it has served us well. Definitely worth the money, really good value here. 756227
WOW! What great customer service and timely delivery! Lazer S. was extremely helpful in helping me figure out which trailer and trailer wiring. Cannot recommend etrailer.com enough! 738803
I had it installed and it works perfect ly 726737
Quality product and service, straightforward insulation with no alignment issues. Takes a few hours without help and with a vehicle that’s needs to be wired. 726275
I followed the installation steps that were on a Youtube video from your company and it was a snap! Everything that I needed for the install was included in the kit, except for one butt connector, but I had plenty of those and it all went smoothly. I don't have the trailer yet so I can't verify that the connections were correct, so I'll follow up in a week or two. 723293
I managed to download the PDF on my lighting module and saw that the Red wire goes to Ground on my type of tail lights. Thanks for the support on the 2-wire tail lighting. I just took the vehicle and trailer for a drive out on the highway and everything was perfect! This is my second BMW X5 and my second DrawTite trailer hitch. This one is on a 2015 and my first one was 3 or 4 years ago on my earlier 2011 X5. I did the full installation in my garage on the floor with normal-guy tools on both vehicles. Everything went great on both. I appreciate the quality of the welds and finish. With my i-Pad handy, your installation videos walked me through the job like I've done a hundred of these. I am very pleased! 719186
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