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.
Average Customer Rating: 4.8 out of 5 stars (35141 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.
Perfect ! First time I install a hitch and this kind of electric Harness. I was a little confuse on what to do first but well explain and it went very well. Tips : On my Tesla model 3 2020 there was a 12v plug already coming directly from the 12v battery in front, so it was a lot easier then passing this cable my self. The cable is in the bumper, you should see it if you install the hitch :-) I own a company and I work with computer, so nothing to do with mechanics and electronics. Just study the plan, watch videos online. Once you understand exactly how it works, it's pretty easy to install.
It took some time and trouble to figure out how this correlates to the installation video (for the Curt model, which has fewer wires). Once the right wires were identified, it was very simple and straightforward. The system works like a charm, and I've already towed a U-Haul trailer. Depending on the vehicle, I would recommend getting some 3/8" wire loom ($1.99 @ Home Depot) to protect the power wire from abrasion/cuts if you route it along your car's underbody. The included instructions (online & paper) are too generic to be useful, and the vehicle wiring codes (types of wire systems: 2-wire, 3-wire pulse, etc.) don't have a reference on the TowReady website. Moderate gripes, but some streamlining would've saved me unnecessary troubleshooting. All the parts you need are included, with extras just in case.
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.
Scott - 11/08/2020The 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.
Damon C - 12/18/2014A 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.
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.
thanks 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)!
Doug L - 01/16/2018This 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!
I purchases the 119190kit wire harness for my car along with a hitch. Both products are working well so far. The installation instructions were accurate and easy to follow.
Jeff - 09/05/2020The harness works perfectly with my 2015 Honda Fit and installation was pretty solid, especially now since Honda makes interior clips easy to remove. I had trouble with the wiring at first due to having the 3 wire system, but after giving etrailer a call during the install I was walked through which colors go where (I was watching the 2014 VW Passat video where they say to make the red wire the extra ground, don't do it with the Fit! It's the brake light FYI). No instructions included, just check out the sample videos on this page for the install on other similar vehicles. We purchased the custom Drawtite hitch and wiring harness to help pull along our hot dog stand (Gnar Dog's Hot Dog Stand) in the greater Cincinnati Area. Couldn't be in business without etrailer; thanks guys!
The hitch works fine and installation was straightforward. I wasn't to keen to slice into the car taillight wiring, but was preferable to paying the dealer hundreds for their module. You should inform customers your trailer light module draws power from the battery and they should pull the fuse when the hitch is not in use to avoid draining the car battery.
I installed my unit on a 2013 Audi a4 quattro sedan. using the provided tester I determined it is a two wire system. i installed unit in driver side outside of trunk. I easily snaked the green wire through trunk to passenger side chamber. The battery is in the trunk, so it was easy to connect supplied fuse connector directly to battery. Wiring: Unit green wire to gray/blue wire on passenger side Unit Yellow wire to gray/white wire on drivers side Unit Brown to Green wire on drivers side. No drilling needed Ran trailer wire into trunk and out through cut out on trim where hitch is Works perfectly. Reason for not a 5: No directions and missing 1 crimp connector.
Laura E - 03/15/2017Overall 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.
Mike L - 02/25/2019 Fife E - 02/27/2020I was very satisfied with this purchase and it is still going strong. I save my 5-star reviews for the most amazing products, and this wasn't quite there. Everything went together as advertised, and it has worked every time I used it (5 or 6 U-haul rentals). My only minor disappointment was that there wasn't a better way to run the wire from the controller to the engine compartment. That could be as much about the car as the kit. I would definitely buy it again or recommend it to a friend
Have not had the wiring installed yet. My mechanic told me it would take a couple hours. Have been using the hitch for a bike rack only. So no need Been sitting in the garage.
Trailer hitch and wiring package were received quickly, and fit perfectly- Thanks!
I purchased this harness for my 2014 BMW X1 along with a Draw-tite Trailer Hitch. I paid the local BMW dealer to install them both. For the first trip the electrical connections worked perfectly. On our second long trip, we noticed that the left lights on our trailer were constantly 'ON' and the left turn signal did not work. When we turn the vehicle entirely off, the left taillights are still on as they appear to be drawing power. Has the 'module' gone bad on its second trip?
Heather A - 06/19/2020I had the hitch and wiring installed professionally. It is all working well and seems durable.
Installation was VERY SIMPLE and straightfoward, especially sinse the installation video etrailer provided was on a 2002 e53 x5 and thats what I imstalled my harness on. Everything works great and I will most definitely be buying through etrailer again. Shipping was fast also!
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.
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!!!
Fred Y - 07/20/2017I 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!
Michael B - 08/23/2018Having done trailer light wiring on cars for years, this wasn't difficult at all. It's not as simple as some of the newer options for other vehicles we've owned, but certainly doable by anyone with any experience, and the directions are easy enough to follow.
The perfect solution. Saved a ton of money installing it myself instead of having an auto dealership or garage do it. Video support was superb. Install made possible multiple trailer uses over the past year.
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.
Mike F - 08/13/2015Info for this part was:
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