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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 etrailer.com or call 800-298-1624 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.


Features:

  • 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:  4.9 out of 5 stars   (217 Customer Reviews)

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

- 20036
by:

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



- 20036
by:

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.



- 20036
by:

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.



- 20036
by:

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.


Comments
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


- 20036
by:

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.


Comments
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


- 20036
by:

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.


Comments
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

We've sent Chris an email to let him know about your question. Remember to always double check a wire with a circuit tester before connecting. Wire colors can change on the same model, even in the same year so the colors may not be the same. Just check before splicing.

-- Etrailer Expert Patrick B - 6/10/2014


- 20036
by:

This 4pole to 5 pole adapter works exactly as advertised. Now my trailer brakes don't lock up when backing up on an incline. Took about 10 minutes to install and corrected my problem perfectly. I especially like the "how to" videos!



- 20036
by:

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.



- 20036
by:

Hitch and light harness installed today. Every part fit perfectly as recommend on the website. Quality of the product is excellent. I had to message the company to verify the products needed, they responded timely and accurately with the part numbers etc. Product received on time undamaged and packed very well. I had a very good overall experience with this firm and highly recommend them. Ron



- 20036
by:

Item was as described.



- 20036
by:

Easy install on new F150. The hot wire for the back up light was the same color blue as the blue on the back up adapter. Tip: I hard soldered my connections where I spliced. Then use shrink wrap. That is a superior install. Crimp on connectors almost always fail over time.



- 20036
by:

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.



- 20036
by:

The 4 to 5 wire connector harness is exactly what I needed to covert my vehicle for towing surge brake trailers. It was easy to install and works great. Fast shipment and easy to use website. Good follow up and tracking updates. A+ buying experience.



- 20036
by:

etrailer customer service rep was very knowledgeable and verified the product would work on my SUV. The shipment was fast and allowed me to track the progress of delivery!! Installation was a breeze! I would use etrailer again and again!!



- 20036
by:

Great parts and knowledgeable of the pr oducts



- 20036
by:

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.



- 20036
by:

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.



- 20036
by:

Worked to fix the problem of a five pin flat on the trailer and hooking up to Uhaul picks up with four pins.



- 20036
by:

awesome service !



- 20036
by:

THIS IS A NICE KIT. IT CONTAINS EVERYTHING I NEED TO CONVERT MY FACTORY 4 PRONG TO A 5 PRONG FOR MY BOAT TRAILER BRAKES. THE PRICE WAS REASONABLE AND SHIPPING WAS ALSO VERY REASONABLE. I WILL BUY FROM THIS SELLER AGAIN IF I NEED SOMETHING THEY CARRY.



- 20036
by:

The product was a great fit for my 2017 Highlander. The video installation was pretty much spot on what I need to do. Expect, if you are a novice like myself to expend a couple of hours to get it done right. Oh, being a novice, I didn't realize that the circuit tester needed to touch a bare cooper in the wire to react, so you need to expose just a little cooper to touch with the circuit tester. The video shows them using a circuit tester but not actually exposing the cooper inside.



- 20036
by:

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


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



- 20036
by:

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



- 20036
by:

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).



- 20036
by:

I used this part to convert the four-pole wiring in my 2014 Toyota Sienna Van (previously installed using etrailer.com 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.


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Ask the Experts about this Tow Ready Trailer Wiring



  • Installation of a 4 Pole RV to 5 Pole Trailer Wiring Adapter to Tow a Boat
    Yes, you can use 4 Pole to 5 Pole Trailer Wiring Adapter part # 20036 to adapt the RV 4 pole to the trailer 5 pole. The included blue wire will be spliced into the RV reverse lights with the included quick splices and you will be ready to go.
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  • Is there an Adapter to Connect a 5-Way Flat Trailer Connector to a 4-Way Flat Vehicle Connector
    There is an adapter that will work for you, part # 20036. It will require that you run an additional wire to the vehicle and connect it, but the connector is included. You will need to trace the 5th wire on the trailer, usually blue, and find out where it runs. Usually it is for reverse lights or trailer brakes. If it is for reverse lights, you will connect the new wire to the reverse light circuit on your vehicle as shown in the video I have linked below. If it runs to brakes on the...
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  • Which Wire Should I Splice my 4 to 5-Wire Adapter to on a 2004 Ford F-150
    It could be that one of those wires is hot for your brake lights, the other is for the reverse light. With the truck in park, press the brakes. The wire that goes hot then would be your brake lights. When you put the truck in reverse the first wire should still be hot, and you should have a second one come on. The second should be your reverse lights.
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  • Which Wire to Hook Tow Ready Trailer Wiring Adapter To 2007 Honda Odyssey Reverse Light
    On the Tow Ready Adapter 4 Pole to 5 Pole Trailer Wiring Adapter, # 20036, the blue wire gets tapped into the reverse light circuit, if your trailer has a surge brake coupler. If you have electric brakes or electric over hydraulic brakes you would attach the blue wire to the output wire from the brake controller. I am sending a video link of that part number being installed which might help you.
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  • Where to Connect Blue Wire from Adapter # 20036 for Brake Controller on 2007 Saturn Outlook
    If you are going to use the blue wire from this Adapter 4 Pole to 5 Pole Trailer Wiring Adapter, part # 20036, as a brake controller output wire you would run it to the brake output circuit of the brake controller that you have inside your 2007 Saturn Outlook. Most likely this will be the blue wire from your brake controller. I attached an FAQ article on wiring a vehicle for a brake controller from scratch below for you to check out.
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  • Can a 4-Way Trailer Connector be Plugged Into a 5-Way Vehicle End Trailer Connector
    You will still be able to use the trailer with the 4-Way after installing the 4 to 5-Way adapter, # 20036. First, you could just remove the adapter if you wanted to and then plug in the 4-Way like normal while stowing the adapter in the truck. The extra wire in the adapter what just not be used. Or, you could plug the 4-Way into the 5-Way end of the adapter. The extra pin on the end is for the extra function on the 5-Way, otherwise, the functions are the same for all the other pins. This...
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  • How to Find the Reverse Light Circuit of a 2007 Hyundai Santa Fe for installing 4 to 5-way Adapter
    With your lift gate open you should be able to look in the threshold near the hinge and you will see a black conduit wire loom that has wire in it. If you trace where this wire loom goes you should be able to remove interior components to get to an area of your vehicle that would allow for you to access the wires easily. Once you get to the wires you will want to test them with a circuit tester like our part # 40376 to determine which carries voltage when the reverse lights are on and...
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  • How Does the Adapter 4 Pole to 5 Pole Trailer Wiring Adapter Install on a 2003 Dodge Ram 1500
    The 4-Way to 5-Way adapter does not have vehicle specific instructions. There is only one connection that you need to make and that is to the blue wire included with the adapter. You will use the included quick splice connector and attach the blue wire to a reverse light wire on the truck behind one of the reverse lights. I have included links to a couple of videos that show how the adapter installs. The process will be very similar on your 2003 Dodge Ram 1500.
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  • 4 Wire Flat to 5 Wire Flat Adapter Recommendation for Towing a Trailer with Surge Brakes
    You are totally on the right track. The Adapter 4 Pole to 5 Pole Trailer Wiring Adapter # 20036 that you referenced would be the correct part to use to convert your 4-way to a 5-way to activate the reverse lockout solenoid of your trailer with surge brakes. You would install it exactly like how you described by locating your reverse light circuit and then using the included quick-splice connector to tap the blue wire from the # 20036 into it. Your pictures did make it through also and...
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    Image 1 for Image 2 for
  • Access to Reverse Light Wire on 2007 Honda Pilot for a 4- to 5-Way Adapter for Trailer Surge Coupler
    Normally you could use a fuse tap and tap into the reverse light circuit fuse to get the signal needed. But on a 2007 Honda Pilot the reverse light fuses have other functions on them so that would not work. If you can access the wiring directly behind the reverse light (like if you were going to change out a bulb) then you could get it there instead of having to remove the headliner. If you cannot access the wiring there either then removing the headliner is the only remaining option.
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  • 4-Way to 5-Way Adapter Recommendation for a 1997 Toyota Sienna Towing Boat Trailer
    The part # 20036 would be the best solution I could recommend for you, in order for the fifth circuit to be active you will need to splice it into the correct circuit of your 1997 Toyota Sienna though. If that fifth circuit isn't needed then you wouldn't need to worry about it. But most likely you need it to run to the reverse light circuit of your vehicle to activate a reverse lock out solenoid. I attached an install video for this for you to check out as well to show you how it would...
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  • Can 5-Way with 6 Wires be Ran to 5-Way with 5 Wires
    Yes, you can run both of your trailer's brown wires to the single brown wire of your new 5-way. Typically this is how most 5-ways are wired. Your old one was a wishbone style connector which means it has the two wires already for that circuit.
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  • Determining Wire Functions on Vehicle with 4 Wires and Trailer with 5 Wires
    Starting with the vehicle side wiring, it sounds like you have a standard 4-Way wiring connector installed. On a 4-Way flat trailer wiring harness, yellow is for left turn signal, white is for ground, green is for right turn signal, and brown is for running lights. Then on the trailer side, it sounds like you may have a 4-Way wishbone harness, which splits the running light circuit at the connector. Most likely, the colors you mentioned have the following functions: White = Ground Yellow...
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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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  • 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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    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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    To convert a 4-way to a 5-way, I recommend the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter # 20036. This adapter will give you the 5th wire connection to allow you to add that reverse function or brake function depending on your trailer setup.
    view full answer...
  • 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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  • Adapter for Boat Trailer With 5-Flat Plug
    In order to connect the 4-flat on your Audi Q7 to the 5-flat on your boat trailer, you would want to use Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter # 20036. The blue wire that comes with this kit is going to get spliced into the reverse light wire on your Q7. I have added a review video of this adapter as well as an install for you to take a look at, as well as a help article on wiring which you may find useful.
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  • 4-Way to 5-Way Trailer Wiring Adapter for 2016 Ford Expedition
    All you need to convert your 4-way to a 5-way is the 4 to 5-way adapter part # 20036. This will plug right into your current 4-way and then gives you an additional wire you can run to the reverse light circuit of your vehicle to activate the pin.
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  • Can 4-Way to 5-Way Adapter Be Used on 2016 Honda Odyssey
    If your 2016 Honda Odyssey has a 4-way installed on it the 4-way to 5-way adapter part # 20036 would fit and work well to convert it to a 5-way. We don't have specific instructions for this adapter on a Odyssey like yours but I did attach a video that shows the process on a similar vehicle. Basically you have to test the wires running to the reverse lights of the vehicle and tap into the one that carries voltage when the reverse lights are on.
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  • Converting 4-Way Flat Trailer Connector on Tow Vehicle to 5-Way Flat so Brakes are Disengaged
    It sounds like you're looking for an adapter to convert the 4-way flat trailer connector on the back of your tow vehicle to a 5-way flat connector. We have the Tow Ready # 20036 which does just that. It includes the fifth blue wire to be spliced into your vehicle's reverse light circuit so your trailer's brakes will be disengaged when you need to back up.
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