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installation instructions and specs for complete information.
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Curt Kia Rio wiring harness
Installation: Connection points are located behind the driver side tail lights.
Tech Tip: It is always a good idea to apply a small amount of grease to all electrical connections to help prevent corrosion.
Warning: Overloading circuit can cause fires. Do not exceed lower of towing manufacturer rating or:
Read Kia Rio owner's manual and instruction sheet for additional information.
Surface Mount Technology (SMT) is a method for constructing electrical circuits where components are mounted onto the surface of printed circuit boards.
Video of Curt Circuit Protected Converter w/ SMT
Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Today we're going to be reviewing part number C56175. This is the Curt Circuit Protected Tail Light Converter with surface mount technology. The SMT technology is just a method for constructing electrical circuits where components are mounted onto the surface of printed circuit boards. This unit is designed to convert your vehicle's light functions to be used to property tow, using a 4-way flat trailer connector. This unit does provide the 4-pull flat trailer connector for the vesicle. It's got the nice little dust cap on it, so it's going to protect the connection points. To see if this fits your particular vehicle, you can use the fit guide, located right here on our website.
It's a very quick and easy installation. It's a solid 1 piece unit so it just has the exposed wires, everything is pre-assembled. Basically, all you have to do is make the connections and get everything located in the right spot. Pretty simple operation. Comes with some nice detailed instructions.
Got some photos in there to walk you through the installation and to find the location of all the connections that you need to make. It's made from 16 gauge bonded wire with a 4-flat plug. It's going to give it a nice factory appearance. It's a simple do it yourself instruction, or installation. All the instructions are located on every package, so again the connection points are highlighted and indicated in the instructions based on the type of vehicle that you have. This unit can be used with 5-pull, 6-pull, or 7-pull adapters. Just keep in mind, it is not recommended for vehicles with LED lights. Here in this package, it's going to come with 4 Scotchlok connectors.
It's going to come with 2 zip ties, and it's going to come with a self tapping screw for the ground wire connection. You can see here that on the white wire, it's going to have that ring terminal already located on it. That way you can do an easy ground connection. Just make sure you're getting it to a nice clean surface on the vehicle. It's also going to come with 2 sided adhesive tape. That's designed so that way you can mount the converter box to a nice flat, clean location.
A little tech tip, is you always want to apply a small amount of grease to the electrical connections to help prevent any corrosion. You can find some dielectric grease right here on our website. I believe it's underneath the related items on the right hand side of your screen. Also, keep in mind that overloading a circuit can cause fire, so you do not want to exceed the lower of either the telemanufacture 00:02:23 rating or the max stop and turn light, which is going to be 3 amps, or the max tail lights, which is 7.5 amps. To go over the wiring real quick, on this unit, the wiring codes are all indicated right here on the converter. The brown wire is going to be for your tail light circuit. The yellow is going to be for the left turn circuit. Red is your brake light circuit. Green is for the right turn circuit. Then your white wire is going to be for your ground. Again, make sure this is a fit for your vehicle. You should have plenty of wiring as long as the vehicle is in the fit guide for this particular converter. It's just going to allow you to tow properly with all the lights functioning as they should, using the 4-way flat trailer connector, which is already included on 1 side of the converter box, coming out here. Plenty of wire. That way you can get it to where it needs to go. I believe that's going to do it for today's review of part number C56175. This is the Curt Circuit Protected Tail Light Converter. .
Average Customer Rating: 4.7 out of 5 stars (135 Customer Reviews)Curt vehicle wiring harness
by: Tex in Dallas07/16/2012
Installed on a 2012 Hyundai Accent SE 5DR/HB - with relative ease for a first-timer. Tips for my make and model would have been nice but none really existed that I could find. Details were generic.... so.... here goes, from memory (so I hope it's close enough for non-government work LOL)... 1) Open the HB and remove the center plastic inner body panel that is about 18" long and has the latch protruding through it. This requires removing 2 screws and popping it loose. 2) Remove everything from the trunk so that you'll have easy access to the grommet on the rear body wall - which is below and towards the driver's side of the rear latch. 3) Pop loose the driver and passenger side rear corner panels and use a 6"-8" tool or something to prop them open so that you can easily access the wire. There is no need to completely remove them as that would require going around to each door. You will likely want to push the rear seats forward so that the panels more freely swing open. The plastic body wall piece that fit over the rear seat latches might pop loose - don't panic, you can re-seat them later when you're all done. 4) With parking lights on, I simply unplugged the obvious wire set going into the rear light section on each side. I went through and tested, with a power tester light, to identify all of the wires that I would need to match to the Curt harness. NOTE: the colors of the Curt harness will NOT match the colors of the Hyundai wire harness, so test the power connector and write the color of that wire on your Curt instruction sheet next to the Curt wire that it must match. 5) Place the Hyundai wire on the completely open side of the Curt connectors. The Curt wire will go in the other side, which is blocked on one end. Use a set of pliers to squeeze the metal connector down ALL the way and it will cut through the outer wire wrapping and connect to the wire. Do this for all four connecting wires. 6) If you have a lack of power at the Curt wiring harness plug that will connect with your trailer lights or Bully LED Step Hitch, then go back and make sure that the metal has been locked ALL the way down to make a solid connection. You will know which connector to check by which plug terminal is not hot. Simply follow that color back to the "splice" junction. 7) If the power is good to the plug at the end of the harness, then snap the covers shut on all the Curt connectors at the "splice" junctions. Locate a nice flat place on the rear driver's side body wall and use the double-sided adhesive tape provided to lock in the "black box" (converter box). 8) Find the grommet that is below the latch and towards the driver's side of the car. The wires going through it are those that power the lights above the license plate. GENTLY remove the grommet. It easily comes out BUT the wiring goes through a small, tight rubber sleeve that is part of the grommet. That's the reason that you cannot push the connector through the grommet itself and why there is no need cut the grommet. Simply push the connector and some wire through the pre-existing hole in the body, and then replace the grommet. I chose to rotate the Curt wires to the top of the grommet to further decrease any likelihood of random water entering the trunk. 9) Place the connector cover on the connector. I left my connector with just enough play in the wires that it would dangle just below the body, so that I could grasp it to connect my Bully LED Hitch Step, and when using my Curt Basket Carrier, it actually tucks up on that same body panel and stays in place without falling down. 10) Use some small wire ties to tie off any excess wire and some electrical tape to lock the green wire in place so that it's not dangling loose to get caught in the center panel when you replace it. 11) Replace everything in order, and carefully... no need to break any plastic tabs such as on the door latch pieces. Take note of how they slide and then pop into place. If you have struggled to get them to snap in place, then carefully examine the tabs and flex them back into correct place if need be, or you'll break them off in the process of never getting the piece(s) to lock in place. The key is easing everything into place. The rear body panels have a couple of screws to replace and then you can ease the rear center piece in place... and then hand slap it to make sure it snaps in and holds. At that point, even though I'd checked everything prior to closing it up, I re-checked my Curt connector plug to verify the three hots were indeed hot. The last thing you want to do is load up the trunk and hook up a trailer with lights, etc. and then discover there's no power to your Curt connector plug. Things sometimes move or shake loose enough that there's not a solid connection. This would most likely be one of those light blue connectors with the metal wire pincher that I mentioned earlier. It MUST be squeezed completely flat to the surface of that plastic sleeve to make sure that it's gone all the way down far enough to pop open the wire insulation and make a good connection to the wire. Even an 1/8" or 1/16" left up can be the root of all evil and cursing. I know because it happened to me... so don't let it happen to you, because "I Told You So!" LOL No pics. Failed to take any. It was hot and I was focused on getting things done and the trunk reloaded. 48171
by: Ray S.08/16/2013
The product is WELL worth the small price paid & more! Ease of installation was great! My 19 month old daughter had to help Dad & it took us about 30 minutes. My daughter had to view every step along the way!! Basic tools, Phillips screwdriver, pliers, light/line tester & drill with bits were all that was needed. I installed it to replace the factory installed trailer harness on a 1998 Dodge Durango. SUPER easy to get to the tail light wires ( only 2 screws per light). I unplugged the light housing to make it easier to clamp into the correct wire and to find the correct wire to clamp onto. **NOTE: The wire color on the vehicle harness does not match the color code on the C56175. Thus the reason for the light/line tester!! ALSO where I mounted the converter box was in the plastic louvers inside & behind the light housings. It fit snug but was in a safe & dry place. I could not take pictures but I assure you the EASE of installation was quick, simple & great the 1st time! Absolutely no problems even for the novice! Thank-You etrailer for such a great product at such a great price!! I would highly recommend this product.. 95441
by: Robert Durtschi06/15/2013
A "shade tree mechanic" perspective: Contrary to the included "tools needed" my 2001 Dodge Grand Caravan bolts were 18 MM not 17 MM. I bought a 6 point 18 MM impact socket from Lowes for about $5. You can remove the bolts with a 3/8" socket wrench and about a 12" 3/4 iron pipe as a cheater. There are two installation videos available on Youtube. 2001 and 2004. One shows removing the spare tire. You don't need to do that. Access to the driver's side mount is very tight. I could barely touch the rubber flap blocking the channel. Don't try to pull on the fish wire to force the bolt assembly past the rubber flap. I almost lost one of the bolts. I ended up using a piece of 1/4" rod bent in a U to push the rubber flap out of the way enough to get the bolt past. I was able to mount the hitch without help by balancing it on three 2 foot long pieces of firewood (rough guesstimate). I lifted one side and fastened it losely to the bolt closest to the end of the hitch, then fastened the bolt on the other side a bit more tightly. then lifted the middle of the hitch and lined up the other bolts. 84824
by: Ariel B.07/22/2013
OK this product is great, installs quickly with the supplied tap connectors and works as expected. i installed on a 05 Hyundai Elantra. Do yourself a favor and save yourself hours of troubleshooting. take some sandpaper and scratch off the paint on the metal surface of the car. I did it inside the light access panel. Use the supplied self tapping screw to make a Solid ground or your trailer lights will not work! i took a shortcut and secured to a screw in the panel, with paint under it. While this was sufficient ground for my test light, it was not for the trailer lights. <- this really threw me off and i wasted a lot of time troubleshooting. i even thought my trailer lights were bad and got a replacement set! but no good until i grounded properly. PS tech support was AWESOME! i had to call twice, once for the hitch install, another for trailer light issue. they answered my questions quickly and even helped me troubleshooting my trailer light issue!. When it comes time to get a hitch for my wife's van, i am definitely re-ordering from etrailer.com. 90890
by: David W07/06/2013
The Circuit Protected Converter # SMT C56175 trailer lighting harness for my 1998 VW Beetle arrived within a few days and was easy to install with the include instructions! All trailer lights worked perfect the first time they were checked after the install! Great job to ALL of you at etrailer.com 87907
I installed this item on a 2014 Mazda 3 HB. I actually placed the unit in the right rear of the vehicle in the jack compartment, keeping it completely out of the way. Doing this required to have a longer piece of wire for the left turn signal input, as the unit comes with a long wire for the right turn signal input wire. The unit is high quality, easy to install with simple instruction. Note: to those using this in the new Mazda 3 series, there is a hole in the bottom of the jack compartment covered by tape. Since I already have another 4 pin flat car end, I will get a trailer end connector and plug it to the unit and run the wires through the hole with a grommet and splice them on to my other car end connector. This will allow me to have the trailer connector available under the car at the hitch and I won’t have to run the wires out the hatch door possible pinching or rubbing on the bumper. 139902
These items are just as they are said to be. Installation was fast and easy. I would highly recommend Trailer and these products. I will buy from them as the need arises. 109323
Works great. I filled each connector with dielectric grease sold by eTrailer. (I'm a big believer in dielectric grease even for interior and indoor use. It inhibits oxidation of contact points which occurs without exposure to harsh elements.). The grease made it difficult to grasp 2 wires and operate the clamp-down connector. The green wire (to the RH turn signal) was a barely long enough. I have a rattle when I go over a speed hump. It's the loose green wire. I should have secured it better, but the length limited my options. I was going to use a 4-wire connector mounting bracket, but for my little 2013 Accent, that seemed like overkill. I zip-tied the connector to the hitch's cross bar. It's accessible enough for me, not not dangling. 63840
by: Dean H.06/25/2013
Quick service from etrailer. Product arrived as expected and fits my VW Jetta just fine. 85931
Good price, product was perfect, and the shipping was quick. Problem solved. T-taps are sort of miserable, but that's on the installer, not the product - cutting, soldering, and heat shrinking is definitely the way to go. If you have a problem with your 'Yota truck lighting acting wonky, chances are very high this unit is your issue! Mount it up high, on the bottom of the bed to keep it dry and give it decent life. The harness cover is a nice touch that does not come with all of these - pack it with dielectric grease, and you'll get many years out of this. Good job, etrailer! 67991
by: ed cook02/27/2014
The trailer wiring adapter worked fine on my 2003 Saturn LW300. The unit construction was excellent. I did have to spend a while finding the proper wires in areas that were practical to splice in and had to do a lot of "pinning" with a voltmeter to determine which wire carries the correct signal. This may be difficult for someone with little experience in wiring. Most connections were made in the spare tire compartment with one behind the right tail light, all within the vehicle. Overall I am very satisfied with the product. 117895
by: Ray B03/18/2014
Yes I received the trailer package and installed it yesterday. As information, this unit does not have sufficient length of wire on the vehicle side.......I have a Jeep 2008 Liberty and the connections are made behind the cargo area panels. I had to splice about two feet of wire to make the connections........note there is not enough room behind the tail light assembly to mount the module so I had to mount it inside the cargo area. But the unit worked fine after installation. 121172
This product works as promised granted it can be a bit tricky to wire up due to space clearance with the individual car. While the Etrailer video was quite superb with installation guidance, I would suggest that you personally check the wiring diagram on your specific car. My wire colors varied from the instructional video but that is due to the manufacturer of the vehicle not etrailer or curtis. Aside from that it's plug and play you can't go wrong. 115044
by: Scott D11/11/2013
The product works fine. I Youtube video for installing a harness on a Suzuki XL-7 IS NOT this product. If you're not a very handy person you may have problems getting this installed. I figured it out but I'm pretty handy. The video show them just plugging it into a 6 pin connector inside the left rear qarter panel. But the harness itself has no matching connector. You have it splice each wire to a wire on the car. 106978
A++ I couldn't get a part number for my converter from the Toyota dealership, so when I found E-Trailers had everything I needed it didn't take long to place an order. Placing an order with etrailer is quick and easy and order confirmation was immediate with a personal response from a real person. My product arrived on-time and in perfect condition. Thanks Austin and Cathy Signed Your new customer 116978
by: Seth V03/16/2014
This product was a little confusing at first. I couldn't figure out what wires went where. I went on to the chevy cruze forum and there was an excellent write up of how to install this exact same kit step by step. After that it was a breeze and only took about a half hour. All my trailer lights worked exactly the way they were suppose to. I would recommend this product. 120859
by: Harry L08/30/2013
Did not install this on my vehicle. Don't order this one. Order one that custom fit your vehicle and plugs right into the lights themselves - alot easier than splicing and whatever else you need to do. 97668
by: David B07/22/2013
WOW the shipping was fast. Ordered on Wednesday and got it on Thursday. I am very pleased with the quality of the hitch and mounting hardware, it went on with no problems in about 45 minutes. The wiring kit was also easy to understand and install. Thank you for a great buying experience and great product, You guys are definitely first on my list for future purchases. 90858
by: Joe McCullough07/02/2014
It took an hour and 13 minutes to tear the back of the car apart install the wiring kit and replace the interior, a bit tricky since the car wires are so small, on the 2013 Honda Fit the right turn wire comes from the drivers side so I didn't have to run the wire across the car and open that side up also. Thanks for a great product at a great price. 138737
Fairly easy to attach just had to double check the wiring on the car and had to sandpaper away some paint in order to get a good ground connection. 96861
by: Bob D.12/09/2013
I have not installed this yet due to bad weather but from the looks of the product I doubt there will be any problem. Everything needed is in the package, the directions are very clear. The service from etrailer was great. I plan to order an adapter from them later to tow a camper. In my opinion a top company to deal with and I would recommend. 109650
I installed this on my 2005 Suzuki Forenza and it went very smoothly especially since it has to be spliced in, instead of just plugged in. The unit is very well labeled and secures out of site. I was able to install this in approximately 40 minutes and probably could repeat it on the same application in about 20. 69994
by: Charles J.08/05/2013
Was very happy and satisfied with my purchase and delivery of my product. Insulation went very well. 93282
by: Larry R.02/02/2014
Works great, however according to the instructions a 3/32" drill bit should be used to drill pilot hole for mounting. This size hole is too big for the #8 self tapping screw provided.My suggestion would be to designate a smaller drill bit in the instructions or provide a #10 self tapping screw. 115432
Good product except for the (blue) instant clips. We ended up soldering the wiring because the clips weren't making a good connection. It was worth the time to make it right and lasting. It took a while to find the color codes for wiring my Scion XA on line, but it's working just fine! 124886
by: Bob B.04/01/2014
This is the only 3 to 2 converter I have found that consistently works in my application. I tow a Silverado with two stop-turn bulbs on each side. I tow with with multiple vehicles, including semi-tractors. Other adapters either will not work, or the lights will be too dim to be safe. 123268
by: Robert W05/13/2013
Recieved the wiring harness and trailer hitch quickly (within 4 days of shipping). Both were exactly what I expected. I especially like the free shipping (because I got the hitch as well). I will be using etrailer again for any future needs. Good job etrailer! 80003
by: mark miller11/13/2013
i am in charge of all the inventory at a major dealership and we buy alot of parts from local businesses but when they were pricing this same wiring to me at twice the price i found here I was Sold on this website and will order again and again Thanx Etrailer 107236
by: Steve R.08/01/2014
The Curt Converter is exactly what i needed to operate trailer light from our car which had separate Turn and Stop lights. Everything needed was included in the package and was very easy to install. Only took about 30 minutes total. Works Great! 143936
This kit worked great. Your car or truck may need a little extra wire for the right turn signal but I am very very happy with the quality of the materials and install. Hauled my trailer safely today and did not have to redo any connections! 171250
by: Steve D.11/23/2013
It took a good bit of searching on the internet to get wiring diagrams for my 2006 Scion xA, However, once I found the info the installation was very quick and easy. Once the connections were made, everything has worked great since then. 108293
I'm so happy with my purchase with etrailer, for me the most important thing is the product they sales to me is made in USA, it been a long since I use these beautiful words, I recommends 100%, good communication and very fast shipping. 73180
by: Steven C.05/06/2014
My 98 Toyota 4Runner wasn't sending the correct signals to my boat trailer. After installing (took an hour and a half, but was easy with the instructions) my 4Runner is now throwing the correct signals to my boat trailer. Thanks! 129270
Worked great on my 06 Saturn Vue. Combined the turn signal & brake lights into on for the trailer. I would have given it a 5 if the green wire was a foot longer. Had to use a "wire stretcher" to reach the right tail light. 133687
by: David R.08/20/2014
I'm not a fan of the crimp-on splices, but other than that it went smoothly. Too bad my Sentra didn't have plugs in the wiring harness. Wires are long enough to get the job done. Runs the trailer lights just fine. 147573
by: paula kaye04/03/2014
Fair price, items as described, delivery was reasonably quick. We always prefer USPS delivery, but that wasn't offered. Not a deal breaker this time, but please expand your delivery options. Your competition has. 123566
by: Rodriguez, Hector02/14/2014
I bought this Converter C56175 for my Chrysler Sebring, and it was very fast delivered ( three days after ordered by usps), and very easy to install (about 20 mins) . I am really happy with the service. 116565
by: Chris N06/16/2014
The wiring harness was super easy to install and works great. However, watch the video for help on installing because the installation instructions that came with the product were not specific enough. 135820
by: Betsy B07/19/2014
I thought I was getting a T-connector with the wiring harness, so I was disappointed that I had to figure out what each wire does rather than just plug it in. The product does work as it should. 142179
Perfect item works great on 2000 Chrysler town and country. Just wish that the guide how of gave me the a color code for the van but a Google search fixes that. Took me about 30 mins to install. 68489
I haven't installed it yet but being a diesel Mechanic I might modify it as far as how I wire it up but haven't looked into it much yet I do like how it has surge and short protection built in! 71518
by: Warren s.12/12/2014
Easy install, plenty of wire, complete with all necessary clips and such, half hour and your done! Couldn't be happier! Just read instructions (don't skim over) and your good to go. 164357
by: Darrell N.06/17/2014
great wire harness, could not have been easier for the "common man" to deal with ! came with the hitch, I paid for it, but same package so didn't have to wait for a second box. 135930
Easy install. Works as described. Quick fix for anyone dealing with a car with separate brake light and turn signal wire. Quick shipping. Great customer service 72202
by: Robert B.04/14/2014
Item arrived on-time and as described. Performed the installation slowly with my son helping and it took approx. 2 hours. The sites video was very helpful. 124908
Installed in about 20 mins on a 1989 Toyota truck. Worked great on the initial testing. I have not had cause to use the product on the road as of yet. 136472
by: Jim G04/22/2014
Works as expected. I was replacing another module which had failed. In this case I just cut the wires on the old module and spliced in the new one. 126539
by: Erwin J. K.04/11/2014
Great Product. Exactly what I was looking for. Right price, great delivery, and top notch assistance over the phone. Highly recommend. 124675
I ordered the wire harness and installed it with no problems. Works like a champ and now I can pull the kayak and trailer with my Honda Civic. 88322
by: Peter Pan07/09/2013
Good product. Would of been easier if the instructions were given for the specific car. Gary turn signals, green stop, pink tail lights, etc. 88452
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