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Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter

Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter

Item # 20036
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Tow Ready Plug and Lead Trailer Wiring - 20036
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Trailer wiring adapter changes the 4 pole flat on your vehicle into a 5 pole flat. Lowest Prices for the best trailer wiring from Tow Ready. Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter part number 20036 can be ordered online at or call 1-800-940-8924 for expert service.
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Tow Ready Trailer Wiring - 20036

  • Wiring Adapters
  • Single-Function Adapter
  • 5 Flat
  • Plug and Lead
  • 0 - 5 Feet Long
  • 4 Flat
  • Tow Ready

Trailer wiring adapter changes the 4 pole flat on your vehicle into a 5 pole flat.


  • Length of harness: 20"
  • Length of blue wire: 60"

The blue wire gets spliced into the reverse light wire on the vehicle which is easily done with the included quick splice wire connector.

20136 Tow Ready 4 Pole to 5 Pole Trailer Wiring Harness

California residents: click here

Video of Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter Installation - 2015 Toyota Highlander

Today in our 2015 Toyota Highlander we're going to be showing you how to install the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter, Part Number is 20036. Now our installation's going to begin by attaching our blue wire that's going to come with the kit to the reverse light wire, so that the wire that becomes hot or turns on are reverse lights. Now they're in the door in the hatch of the Highlander here, so we're going to go in to one of the wire looms located inside. We're going to go to the one that's on the left side here, and we'll just pull the boot up of the bracket that's holding it down. What we're going to do is just slide that loom up, get it out of the way now where we can get into our bunch of wires here. The wire that we're looking for is going to be a red wire. The good news is that there's only 5 of them. We only have to test 5 wires to figure out which one's going to be which, it should be this thicker one here but we'll see in a minute.

To test it out to figure out which one we need, we got somebody in the vehicle, of course they've put their foot on the brake, turn the ignition on, and they put the car in reverse. Now we're going to take this regular test light, our ground clamp, we can go right down to the latch that holds the door close. Let's go through it and test wires, with the reverse lights on we should be getting a signal to the wire. Let's start connecting, let's see, all right, nothing on that one, our next here, all right. Now in that red wire I'm getting the signal. What we're going to do is have our partner now take the vehicle out of reverse. Right, it goes off, back into reverse, comes back one, and then out of reverse, so we know that's the wire we're looking for.

Then we take a look here. There's 5 red wires in the loom, this is the thickest of those wire, just to give you an idea of what you're looking for there. Now the wire that comes with the kit, 60 inches long, that's not going to be quite long enough for us to make it down to where we want to go, so we're going to add on just a little length of wire. Just a piece of wire we have laying around the shop here. A little bit larger in size to the wire that we've got there. As we see here it's going to be the same diameter as the wire that we're running. We'll just make a Heat Shrink Butt Connection at the end of those to keep it nice vapor sealed.

We've got a quick connect, quick connect will slide on the wire, take our add on wire and slide on right behind there, hold that bolt together, where we can click that metal tab down. We'll going to squeeze that until that metal tab goes all the way down flush, has a good grip on both of our wires. Then we'll just bring that cover over and click it close. Then what we'll do is just slip that out to our cover here. You can bring that down. It's going to go over the top of that quick connect that we had.

Then I'm going to try to do is bring that wire out through the boot right up here on the top. We'll take a little tiny Philips screwdriver, we'll poke it through there just like that. Tape this white wire here that we've added, I'm going to tape it under the screwdriver and then just try to pull that through that rubber grommet. Take this off, we'll pull the rest of that through. As you're pulling it through you don't want to get too rough with it. You don't really want to stretch that grommet out, we like it to hold right around that wire and give us a nice little seal. Just ease it it on through. All right. As you can see, pretty nice clean looking install. Let's slide that, cover it back on, and try to get it in place. If you see another 4 push tabs, 1, 2, 4, and then 1 on that back side, it's going to be easier to pull that out and get that gasket back around, than it is to fight with it when it's still in there. Just press those tabs and it will come up and out. I'm going to get that stretched all the way around, and then poke it back in just like that, perfect. Now we'll bring our wire all the way around, and what we're going to do to get it outside is I'm going to tuck it right in behind our taillight housing, and run it down and out of the bottom of the vehicle. They'll appear in the top and all the way around there's a nice gasket. I'm just going to tuck that wire right along, behind the back side of that gasket, bring it all the way. As you can see it hides it really well. You can take a pick or a screwdriver or whatever you want, and just work it in all the way around that. You really won't be even able to see it once you get done. Now let's take off the 2 10 millimeter headed bolts that we got, just a 10 mil socket, get in there, remove these out of the back of the taillight housing. Always pull out towards the rear of the vehicle, wiggle it a little bit. If they don't come freely, we'll trim removal tool, plastic screwdriver, plastic spatula, or something. Just work it out a little bit. Basically we've got a little pressure clip right here, then another little clip there. What we'll do is just move this long enough so we can get our wire down past, and we'll continue running to where we can tuck it behind the bumper right here. Place these 2 screws. We've got a piece of airline tubing here, but you can use coat hanger, or a stiffer piece of wire, whatever. We'll just going to run it down alongside here, and see if we can get this to come out below the vehicle where we can grab it and direct the wire down there where we're going to want it. Now we're going to remove the panel here and take a look and see if our pull-wire isn't locate right behind it. To do that we've got 1, 2, 3, 4, and 5 fasteners, you'll need a 10 millimeter socket for them, and then there's just a push pin fastener there. Let's start backing these out. The interior tucked right in here beside the spare. These are just a little push nuts, these are something you can remove just by hand. If they get twisted, a 12 millimeter socket will go over those good. All right. Then the last thing will be a little push pin fastener there, a little screwdriver or pick, pull the center out, and then the outside will come with it. Pull it down, and here we'll see our fish wire which is great. Now let's connect our white wire to it. Here is the white wire, place it right in the end of that tubing, we'll tape it off to your coat hanger, or other wire, whatever you've used, and then just pull away. If starts to get hung here at the top you can pry it out just slightly with a screwdriver, just to allow it to pass in. Then once you get to the wire it should be super simple to drive through. What we're going to do is tape our blue wire off to our white wire. We're going to draw that up slightly, and we want to get our connection where we put our Butt Connector, we're going to hide it in here behind the bumper. That way it's away from any moisture and stuff like that. If we pull up on what we went down, we can get that wire up here and then draw it back in behind our bumper. We want our Butt Connector to be about right in here, maybe right in here, somewhere protected, so that's going to wire down about right there. We'll trim it off, strip the end off, add the Butt Connector, crimp that off, let's strip the end of our blue wire, all right, nice and snug. Now we can take a heat gun, or a lot of times if I'm just doing one like this, I just use a lighter. You want to use the lower part of the flame, so that's yellow and then blue, you try to use that blue part, you'll have a lot less of the black carbon. We'll just heat this up. That's going to start to shrink, there's a nice sealing in there. All right, so nice and sealed off, let it cool for just a second, then for extra little layer of protection with an electrical tape. Get rid of our white wire, we're done with that, now we can use our blue wire to get that pulled down and in. Just like before, with a little pick or a little screwdriver push that back behind our rubber stripping. Now we'll just route our wire, over here towards the 4 Pole connector. Notice the wire loom that runs over for the 4 Pole right here, we'll take a couple of those zip ties there and just secure our wire off here. We don't want it to be pulling down from the tap, give a little bit of slack there. Don't want too much tension on it. We're going to bring that right over here, we got a little bit of extra, which is good in case we ever need any repairs. Zip tie that off there, and that'll leave our connector back here where we wanted. Your customers are going to want to plug into this, so we'll mount it right there, should make it easily accessible for him to get to it. Also keep it up out of the way. Now then just trim off the excess. There's an option to clean up the look of the install, we can take some electrical tape. We just go around that blue wire, it's going to clean it up, make it look a lot more like a factory harnessed one. Right now to test it out what we're going to do is take our 4 Pole Plug in that comes as part of the adapter, you can see here, this is the 5 Pole, here is our 4 Pole. Take our cap off our existing 4 Pole, we're going to slide that in. In here you can see our add on. We're just going to plug in the blue wire from that, right into that reverse light circuit. Now what we're hoping for is that we'll have . The normal lights are going to run right through here, that's not an issue, but we want to test this last one, this fourth, the new add on plug. With our vehicle in reverse, foot on the brakes, somebody in there, we're going to hit it with the test light, as you can see we're getting a great signal. Now we'll be able to plug our harness right into that and have that deactivation when we want it back up. When not in use, pull the plug, and just recap just like that. If you choose to, you can also wire this. This will be tucked up underneath the vehicle, and this will be exposed on the rear. This should work fine with most of the 4 Poles that you'll plug in, unless if it has that rubber shroud that goes all the way around, it may interfere as you try to plug it in. Just keep that in mind if its got that on it. Now our panel need to go right back up where we found it here. Tuck it in behind and then just push it, there it go. The tin push studs here, I like to do those first, I'm just going to push up on them. That'll hold it in place while we get everything else going. All right, with that working at it should that's going to complete the installation of the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter, Part Number is 20036 in our 2015 Toyota Highlander. .

Customer Reviews

Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter - 20036

Average Customer Rating:  4.8 out of 5 stars   (228 Customer Reviews)

Trailer wiring adapter changes the 4 pole flat on your vehicle into a 5 pole flat.


My Ford Edge with the tow package had a 4 pole harness and my boat trailer had a 5 pole harness with the extra wire for locking out the brakes when reversing. This adapter was easy to install and works like a charm. No more need to use a lock out key when reversing the trailer.


My trailer has a five plug harness. The cord made it easy to convert from my wiring harness.


Fast delivery! Works great with 5 pole flat connector on my Goldwing M/C and 4 pole on my truck


Adapter 4-pole To 5-pole Flat - works as described. Installed on 2013 Chrysler Town & Country. Connected blue wire to left rear light harness. Strongly recommend using a 12v tester for this install, as visual diagnosis can be wrong. Deduct one star because 5-plug has no cover and is susceptible to road grime. My solution is to leave original 4way plug with cover underneath the vehicle and connect 5plug adaptor only when towing boat.


Simple install on my Jeep JK. Tapped the reverse light lead wire and harnessed all the wires in flex conduit. Tie strapped it all under bumper. Can either use 4 or 5 pin trailer.


could not find what i needed locally,you came through and fast delivery as well. i recommend your site to anyone. thanks


Great parts and knowledgeable of the pr oducts

Bobby - 06/19/2022


Great, fix!!!


4 to 5 pin wiring plug is awesome bought the bracket that it fits in to secure to truck and it works very well was very secure until I backed into trailer hitch with it ..its still square and hold tight just need to rescrew it back on with bigger bolts and it will be good as new. I recommend this to everyone that needs 4 to 5 pin for there trailers its so easy to install takes 5 minutes.

the product is still holding true to the truck and still preforms just as it was the day I installed it
Eldon W - 03/29/2021


This was exactly what I needed. Our Nissan Pathfinder came with a 4 prong plug already installed, but our new boat trailer has a 5 prong plug. This fit perfectly, works great (already used it this past weekend) and the installation was easy, thanks in part to the instructional video included on the product page. Would definitely recommend to anyone that needs to go from a 4 prong to 5 prong for your trailer.

Which wire did u crimp on to for your Pathfinder? Could u tell me the colour pls. Thanks.
-- comment by: Rich S - 06/08/2014


Spoke to this person for over 20 minutes with with all the details of my vehicle and I was sent the wrong item a 2nd time


Great service. Thank you


Everything is as described. All of the tutorial videos are Excellent. Unfortunately, There is no install video for my make and mode. However, i have reached out to eTrailer and am waiting on their reply now.

Everything is working well. I did receive a call from etrailer from a guy who told me exactly how to find the wire i needed to splice into. That was a very pleasant surprise. Great Company and Great Customer Service.
Joey J - 08/16/2021


This seems to be a good option for an adapter to get a 5 wire trailer connection.

The single wire for the back up light connection is odd to secure to wire harness so it don't get damaged from dirt. The socket could have a cap to cover so dirt can not get in it when not in use.


Had to purchase the part for a boat trailer hook-up. etrailer was the only place and first place we looked. Our local trailer dealer did not stock the part, so having purchased an item from etrailer before, we chose the company to purchase what we needed. The online videos were very helpful and installation was very easy. Shipping was fast and we are completely satisfied with the product and the company.


Great product and easy to to connect. I could not find this trailer connection at any of our usual local auto parts store

It’s working out great been able to pull my boat in the early morning with no issues
Albert S - 08/17/2018


This is for a 2014 Jeep Cherokee Latitude. It took me a little extra time as my helper was a 5 ton floor jack and it supported the receiver and if only my right foot had fingers it would have helped a lot. Loading the bolts and plates into the frame was a snap, I left the fish wires on the bolts and that helped a lot and I didn't lose a bolt into the frame,you must leave the exhaust hanging to get to the rear bolt closest to the exhaust curve just before the mufflers I didn't and it was a bear to torque it. Also after I cut the opening on the bottom of the bumper and already had torqued the receiver I had to pry the bottom edge over the receiver there was no other way to get the hitch up inside not enough forward space to get it to slide up and in. Other than that it was a snap.
Now for the wiring harness, went well had a bit of a time getting the connectors up to the tail lights even with all 4 screws out and a little bit of play I had to pry the plastic support away from the body to get the connectors through. That was for the 4 flat, for the power for the harness I have a rig runner 4005 from Powerwerx for all my power as I am a volunteer Fire Fighter and have all the goodies that goes with it and every thing runs fine. For the 5 flat all I had to do was find and take out the backup bulb in the tail light and test to find which wire was hot. And then it was over and done put it all back together and drive away with my trailer. Sorry no picture it looks just like the factory/dealer put it on.
Ray H


Works as advertised but the 5th (blue) wire provided is too short for my 2006 Honda Pilot. Not a big deal. You can buy 3 feet of 16 gauge wire at Ace Hardware (even in matching blue if you wish) and use butt connector or bullet plug to splice. Regarding which wire to tap into for the reverse lights: On my Honda Pilot, there are access ports to the reverse lights on the inside panel of the rear hatch. I just popped one of those covers out too see what color wire powers those reverse lights. (In my case, it was a green wire with silver spots and a very thin black line.) You can then tap into that wire at top of the hatch in the same manner shown in the video on eTrailer's website (for a Toyota Highlander if I recall correctly).


Had to rewire my 8' utility trailer. Purchased the wiring kit and couldn't be more pleased. Easy to install, clear instructions and fast shipping. THANKS!

Maj M - 10/20/2017


I have been using adapter #47515 to convert my 4 pole vehicle to my 5 pole trailer plug. The extra wire was necessary to operate the solenoid on my surge brake trailer. It worked ok, but because the wire came into the 5 pole plug at a right angle, the wire seemed vulnerable to bending and then breakage. This product has the extra wire coming straight out the back to alleviate the bending/breakage concern. So far it has met my expectations.


I used this part to convert the four-pole wiring in my 2014 Toyota Sienna Van (previously installed using parts) to a five-pole so I can pull a boat trailer with hydraulic "surge" brakes. Everything worked well, but I had to get an extra length of wire and a butt connector at an auto parts store for my Toyota Sienna. The most time consuming part of the process was finding the reverse light wire in the bundle of wires going to the tail lights. A test light with the ability to pierce a wire (sharp point) is required for this.


very easy it took me about 30 minutes the hardest part was getting the left side tray out of spear tire well witch was about 15 minutes The factory plug was hanging beside wiring harness plug it in hook up ground splice the power wire to backup light for my 5 pin connecter for trailer brakes


works great. I bought a 2020 Telluride, the factory wiring is not set up for disc brake trailers. You can not back up a trailer without this. Go to the Telluride forum site for pics and how to connect.


The adapter was fine. The video showing how to route the backup light wire to the harness was terrible. Routing a wire under the hatch seal caused a leak that went undetected for 3 months. Had to pull all the seats out several times, remove all the moldy carpet padding, scrub the car and carpet many times, replace the padding, put all the seats back and have the interior professionally detailed. A better method is to route the wire under the headliner down the side. Stay away from the hatch seal.


Item was as described.

Show More Reviews

See what our Experts say about this Tow Ready Trailer Wiring

  • Can Vehicle with 4-Way Tow Trailer with 5-Way
    If you have a 5-way on trailer and a 4-way on your vehicle what will happen when you plug the two together is that everything will work fine except the fifth circuit on the trailer. If you wanted a 5-way adapter you could then use the part # 20036 which will allow you to run the fifth circuit to wherever needed. Most commonly to the reverse light circuit.
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  • 4-Way to 5-Way Adapter Recommendation for a 2013 Jeep Wrangler Rubicon
    We have exactly what you would need. All you need is the 4-way to 5-way adapter part # 20036. This will plug into the 4-way on your 2013 Wrangler and will allow you to run the 5th pin to whichever circuit on your tow vehicle that is needed. Typically this is run to reverse lights for either an electric lockout solenoid or for reverse lights. Check out the install video I attached.
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  • 5-Way Adapter Recommendation to Allow Trailer with Surge Brakes Backup
    Yes, you definitely need a 4-way to 5-way adapter installed on your Pathfinder like part # 20036. With this installed the reverse lockout solenoid of the actuator will be able to prevent your brakes from locking up when you go to back up. The blue wire needs to be ran to the reverse light circuit of your vehicle's interior.
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  • Why Would Trailer Brakes Lock Up Only in Reverse with Surge Brake Trailer
    Sounds like the reverse lock out solenoid wasn't activated since the brakes locked up when the guy was trying to back the trailer up. Since it only happened in reverse that would almost guarantee that is the problem. Did you check the air pressure in the tire? Typically a low inflated tire will cause excess heat build up. You'd want to make sure you have the max pressure in the tire listed on the sidewall to prevent that.
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  • Recommendation to Connect 4-Way on Honda Pilot with 5-Way on Boat Trailer
    I have the perfect solution for you. In order to connect to the 5-Way on your boat trailer, I recommend using the Tow Ready Trailer Wiring Adapter # 20036. This will plug right into the 4-Way already on your Honda Pilot and provide you with a 5-Way to use for the boat trailer. The additional blue wire from the adapter will then just need to be connected to the reverse light wire on the vehicle so that it can activate the reverse lockout on the trailer actuator. I have attached a short...
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  • 4 to 5-Way Adapter Recommendation for 2007 Nissan Pathfinder Towing Boat Trailer with Surge Brakes
    The adapter you need is part # 20036. This will convert your 4-way to a 5-way so that you can activate the reverse lockup solenoid of your trailer with surge brakes. The fifth circuit of this adapter will get ran to the reverse light circuit of your vehicle like in the install video I attached to this page.
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  • 4-Way to 5-Way Adapter Recommendation for Boat Trailer with Surge Brake
    You'd have to use a 4-way to 5-way adapter as you'd need a separate pin for the 5th circuit. If you tried to run it on another circuit you'd have issues on both circuits. So the correct adapter you'd need is the part # 20036. The fifth circuit would need to be ran to the reverse light circuit of your vehicle.
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  • 4-Way to 5-Way Adapter Recommendation for 2017 Subaru Forester with 4-Way
    What you need is a 4-way to 5-way adapter part # 20036. You'll plug the 4-way of your Forester into the adapter and then run the fifth circuit to the circuit you need for your camper. Typically the 5-way is used to activate a reverse lock out solenoid of a surge brake trailer. If this is the case the fifth circuit needs to be ran to the reverse light circuit of your Forester.
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  • 4-Way to 5-Way Adapter Recommendation for Boat Trailer
    An extra red wire for trailer wiring is not commonly seen, but since you said this is a boat trailer it's most likely for a reverse lock out solenoid. Does the trailer have surge brakes? If so, this would be the case. This circuit would need to get run to the reverse light circuit of your tow vehicle so that the actuator can allow the trailer to be reversed. We have vehicle 4-way to 5-way adapters as part # 20036 but before we go down that route let's first be sure the red wire is the reverse...
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  • Will Reverse Light Circuit of Honda Odyssey Handle Powering Reverse Lock Out Solenoid
    Reverse lockout solenoids do not draw very much amperage at all so the # 20036 attached to your reverse light circuit wouldn't be a problem.
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  • How to Install 4 to 5-Way Adapter on a 2018 Hyundai Santa Fe
    In order to install a 4-way to 5-way adapter like the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter part # 20036 on your 2018 Hyundai Santa Fe you will want to use a circuit tester like part # ALL640595. Once you have acquired the circuit tester you will need to gain access to the wire loom that feeds to the taillights which is located at the top of the hatch. You will want to test each of the wires in this bundle until you have found the correct reverse light circuit. If you need...
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  • Does 4-Way Trailer Wiring Include Reverse Light Circuit
    4-Way trailer wiring does not carry the reverse light circuit. 4-way wiring carriers a ground, taillights, left turn/stop, and right turn/stop. Typically if the reverse light circuit is needed we recommend the 4-way to 5-way adapter part # 20036 which you could run to the reverse light circuit of the truck.
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  • How to Convert a Vehicle 4-Way so that it Works with Trailer 5-Way
    You actually don't need any of those parts to connect the wiring from your tow vehicle to your trailer. We have the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter # 20036 which plugs into the 4-Way on your vehicle and has extra wire to tie into the reverse light function on your vehicle. This will activate the basic lighting functions on your trailer as well as the reverse signal. An example installation video has been linked for you to check out.
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  • 5-Way Trailer Wiring Connector Recommendation for 2012 GMC Terrain
    The adapter you need is the part # 20036 but it is not a custom harness or your Terrain. It will still require you to find the reverse light circuit of the vehicle and use the included quick splice to tap into it and provide the reverse light circuit.
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  • Can 4-Way Plug Into 5-Way and Still be Functional
    Yes, a 4-way can plug into a 5-way and the 4-way functions will all be fully functional. The reverse light circuit would be the only thing that wouldn't work since it's not connected.
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  • 4-Way to 5-Way Adapter Recommendation For 2018 Toyota Highlander
    We have the adapter you need but it requires splicing into the reverse light circuit of your 2018 Toyota Highlander. For that you'll want the part # 20036 which I attached an install video that shows this kit installed on a similar 2015 Toyota Highlander as yours.
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  • Converting a Vehicle with a 4-Way Trailer Connector to Tow a Boat with a 5-Way Connector
    Yes we do. Use part # 20036. It plugs into the existing 4-way on your vehicle for the lighting functions and adds an additional wire that needs to be connected for whatever purpose your fifth pin on the trailer is for. It's likely an electric lock out for a brake actuator which means you connect the blue wire to the reverse lights on your vehicle. Before you get a wiring adapter you should know (assuming you don't already) that if the fifth pin on your boat's trailer isn't needed the...
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  • Solution for Connecting Factory 4-Flat on Nissan Pathfinder to 5-Way Connector on Boat Trailer
    I have a perfect solution for you, however there is not a 5-Way harness available that will connect directly to the OEM port on your Nissan Pathfinder. Since your vehicle is already equipped with the factory 4-Way harness, I recommend simply using the Tow Ready 4 Pole to 5 Pole Adapter # 20036. This will plug right into the 4-Way flat connector you already have and provide a 5-Way on the other end to connect with your trailer. The additional blue wire on the adapter will just need to...
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  • Finding Backup Circuit Wire on 2016 Dodge Durango to Install Tow Ready Adapter # 20036
    Based on my research the backup circuit wire on your 2016 Dodge Durango is going to be a voilet color wire on the left side lamp or a light blue wire on the right side, although I do still recommend verifying this with a circuit tester. The backup lights are indeed on the liftgate of the Durango but the wiring does still extend further up the vehicle until it terminates at the body control module beneath the right side kick panel. You should be able to access the reverse circuit wiring...
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  • Why Does 5th Pin of 5-Way Adapter Run to Reverse Light on Tow Vehicle
    The fifth circuit of a 5-way is commonly used for the reverse lock out of a trailer with surge brakes. Since that is the most common use of the 5th circuit that's why it's recommended to be installed there. If you have a different need you can attach it to a different circuit.
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  • 4-Way to 5-Way Recommendation for 2009 Toyota Sequoia for Towing Boat Trailer with Surge Brakes
    Since your 2009 Toyota Sequoia has a 4-way already installed at the rear all you need to convert it to a 5-way is the part # 20036 which simply plugs inline with the 4-way you have and then allows you to run the additional 5th circuit to the reverse light circuit of the vehicle. I attached an install video for this adapter for you to check out as well that shows it installed on a similar vehicle to give you an idea what is required.
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  • Recommended 4-Way To 5-Way Adapter For Boat Trailer
    To convert your 2008 Ford Ranger from a 4-way to a 5-way trailer connector, I recommend using the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter # 20036. That 5th function is typically for a reverse function and is used often times for the reverse lockout on boat trailers. You will want to attach the blue wire of this harness to the reverse light power wire on your tail light assembly. I've attached a video to assist. If your boat trailer has an electric lockout and you don't install...
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  • Towing a Boat Trailer with a 5-Way Trailer Connector when Tow Vehicle has a 4-Way Trailer Connector
    Typically a trailer with a 5-way trailer connector has surge brakes and the fifth wire is tapped into the reverse light on the tow vehicle to disengage the trailer's brakes when reversing the vehicle. A 5-way trailer connector will plug into the 4-way on your tow vehicle but you won't have the ability to back up without the trailer's brakes engaging. The solution is to use a 4-way to 5-way adapter like # 20036. This plugs into the 4-way on the back of your tow vehicle and then has an...
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  • Can a 2013 Kia Sorento Have a 5-Way Trailer Connector Installed
    The 4-way trailer connector on your 2013 Kia Sorento should have a powered converter which reduces the draw on the vehicle's lights. It draws the power for the trailer's lights directly from the battery. So you won't have any problems adding a 5-way connector. You can use an adapter like # 20036 that converts the 4-way to a 5-way. Your 4-way plugs right in and then the extra blue wire gets tapped into the reverse light circuit on your Sorento. If you don't already have a 4-way trailer...
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Info for this part was:

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Test Fit:
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