bing tracking image
  1. Trailer Wiring
  2. Wesbar
  3. Trailer Connectors
  4. Trailer End Connector
  5. 4 Flat
  6. Plug and Lead
Wesbar Wishbone Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 18" Long

Wesbar Wishbone Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 18" Long

Item # 002402
lowest price pledge
Our Price: $9.98
Trailer Wiring
Orders above $99 qualify for Free Shipping
Shipping Weight: 0.12 lbs
In Stock
002402 - Trailer End Connector Wesbar Trailer Connectors
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
Wire your trailer with this universal, splice-in wiring harness so that you can connect the trailer's wiring to your vehicle's during towing. Wishbone design removes need for a jumper wire between tail lights. Lowest Prices for the best trailer wiring from Wesbar. Wesbar Wishbone Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 18" Long part number 002402 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (212)
  • Q & A (0)
  • Videos (2)
  • Photos
  • Why etrailer?

Wesbar Trailer Wiring - 002402

  • Trailer Connectors
  • Trailer End Connector
  • 4 Flat
  • Plug and Lead
  • 0 - 5 Feet Long
  • Wesbar

Wire your trailer with this universal, splice-in wiring harness so that you can connect the trailer's wiring to your vehicle's during towing. Wishbone design removes need for a jumper wire between tail lights.


  • 4-Pole flat trailer-end connector plugs into the 4-way flat on your tow vehicle
  • 2 Tail light wires of wishbone-style harness make wiring your trailer more efficient
    • One tail light wire (brown) is bundled with left turn and brake wire (yellow), and one is bundled with right turn and brake wire (green)
  • Color-coded wires allow for simple hardwiring to existing trailer connections


  • Harness length: 18"
  • Wiring configuration
    • White: ground wire
    • Yellow: left turn/brake light
    • Green: right turn/brake light
    • Brown - tail lights
  • 1-Year limited warranty

002402 Wesbar 4-Pole Flat Trailer End Connector - Wishbone Harness - Trailer End - 18" Long

Video of Wesbar Wishbone Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 18" Long

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

Video Transcript for Wesbar Wishbone 4-Pole Flat Trailer Connector Wiring Harness Review

Ryan: Hey everybody, my name's Ryan. And here at etrailer, we install, test, fit, and review a lot of different parts. That way we can try to answer any questions, those of you might have. And that's exactly what we're doing here today on our trailer. We're going to be taking a look at, and showing you how to install the wesbar wishbone wiring harness. So, when it comes to trailer wiring, a lot of times, you'll see just this portion here, where you plug into your tow vehicle.

Tends to get damaged, just tends to get broken first. Whether it gets pinched, damaged that way, or just corroded. This portion here is usually always out on elements, so it's the first ago. And really don't make sense to replace your whole entire trailer harness, if you can get away with just putting a new end on it.And that's exactly what we did here today. I have the old portion right here.

And as you can see, it has seen better days. It's been tapped into a few times, and the ground terminal on a four way connector was actually missing, and they bypass it here with a separate wire, and this is not ideal. You don't want to have to deal with any of that. This is just.. Something is just waiting to break on this.

At the end of the day, it's important that our lights are going to be working properly. That way, we're safe, legal, and other people know what we're doing when we're driving down the road. So, this connector in, was the perfect solution to our problem. So, this is what's called a wishbone style connector. And the end of it, is just going to be your standard old classic four way connector.So, is super common.

Nothing really special there. However, on the back of it, we're going to have five wires coming out, instead of your four. So you're going to have your right turn, your left turn, your tail lights, and your ground. And the green and yellow are also going to control your brakes. But with that being said, the reason for two taillight wires, is so you can run each wire all way to the back individually. As opposed to having one taillight wire, and then once you get towards the back of your trailer where your lights are, you would have to essentially use a jumper wire.So, kind of connecting to that original wire, and run another one over to the other side just to get both your taillights to work. And this is nice, because it'll eliminate that. So, makes it a little more simple, and in my opinion, too easier to diagnose in the future, if you do have a lighting issue. You only have one wire to work with on each side, as opposed to trying to chase it back down to very end, and where it's tapped into, if that makes sense.So, a little more straightforward. Now, keep in mind, this is just the pigtail end. So, it's not the whole harness. Upon further inspection of our trailer, the rest of the harness was good, so we didn't want to replace it all. But if yours is bad, we actually make kits available here at each trailer. That gives you the same end with a lot of wiring. So, if you do need to redo the whole trailer, that's an option for you as well. So, one little thing I do actually like about this connector, is this portion here is nice and wide, and really fit and feel like it should last awhile, and be nice and durable.It gives you a good spot to kind of grab and plug it in, or disconnect it from your other four way. And that way you're not tempted to grab the wires and disconnect it that way. If you do that over time, eventually you'll damage it. So, just something small, but something that's pretty important to get some more life out of it. Speaking of keeping this in good shape, there's a couple of things you can do to help keep these terminals protected.And one of them is just use some dielectric grease. So you pop some grease on these from time to time, and that's going to keep them protected against any type of corrosion, or anything like that. And another solution too, is here's a dust cover. inaudible 00:04:13 dust cover here. So, this isn't included, but you can grab it separately. That way when it's outside, you're not using it, you can put that cover over it. And that's just another line of protection to help keep moisture and things like that from tearing up your connectors there.So, the harness itself is 18 inches long. So, it gives you quite a bit of wire, and shouldn't really have any issues there. As far as getting it connected, the wiring is 12 gauge. So that's a pretty typical size, really common, and should match up really well to your existing trailer wiring. Now, as far as getting this hooked up, it's pretty easy, but there are a few things you're going to need. Chances are pretty good you're going to need some buck connectors, a ring terminal that we can ground your wire to the trailer itself. And what I did as well, I'll just use some of this wire loom, just to help kind of clean up and install look, and give our wires just an extra layer of protection.Now, as far as the installation goes, it's pretty straightforward, especially if you have your old connectors still attached. You're just going to more or less match everything up, color for color. So, it shouldn't take you a whole lot of time, or give you too many issues. Speaking of which, let's go ahead and do that together now. So, to begin our installation, what's you're first going to want to do, is cut off your existing pig tail. So, we're going to do is grab our original wiring here, and strip back the ends. Now, something I do want to mention, your trailer might be set up just a little bit different as far as the color combination of wires go. So, it might not be a bad idea before you cut that pigtail off, just to kind of make a mental note of what color wire is going where, and so on.So, you can take a photograph of it, or just jot it down on a piece of paper. Something just to get habit to practice that way, if you're unsure a little bit down the road, at least you have something to reference. So, I just stripped back all the ends of our installation here. And then what we're going to do, is put on some buck connectors. So you are going to have to pick these up separately. You can find them here at etrailer. These are actually heat shrinks, and I highly suggest using these. The ends will seal up and keep any moisture out that way, our connection point here will be protected. They just slide over the end, and then they just get crimped down. So let me do that same thing for my three remaining wires here.Now we can grab our new pigtail and get it all hooked up. So, these ends actually come pre-stripped, and whether your trailer is wired up the same as this one or not, this will obviously always be the same. So, we'll kind of run down what each wire does here. So if you look, our green wire is going to control our right turn signal. The Brown wire that's running right alongside the green, is going to be for the right side of the trailer for the taillights. Same thing with this and more or less, the yellow wire's going to control the left side of our trailer. And the brown wire connected to the yellow wire there, that's also going to be for the left side. And that leaves one white wire. This is just going to be our ground. This ground wire, we're not going to be connecting to our existing trailer wiring.This is actually just going to go to the frame of the trailer itself. So, we're going to wait to do this one last. Now in our case, our green wire here, we'll go to the green wire on our original wiring. So we'll plug that inaudible 00:08:11 into the buck connector, and crimp it down. The Brown wire here, that's next to our green, that's going to go to this white wire here. Just slide that in, crimp it down. Our yellow wire will get connected to the yellow wire on our trailer. So, the brown wire here that runs next to our yellow, on our new harness, that's going to go to the brown wire on our trailer. So I'll get this last one crimped down, and then I can come back with a heat source, and shrink up all of these ends.So when you're using your heat gun to seal up these ends, after a few seconds, you'll notice them to kind of start to shrink. And once they're completely shrunk, you know that we're good, and we can move on to the other end. So, this is what the buck connectors will look like, once you have them shrunk down. And with that being said, now we can work on our ground wire, which is this white wire here that goes to our new connector plug. Now, as I mentioned this going to get attached to the trailer frame, and our case, that wire's a little too short. And if that's your case as well, not really a big deal. I'm just going to grab a few foot of extra right wiring. You can pick this up here at etrailer, and just extend that wire.That way, we're not trying to deal with everything being real tight, and hard to work with. We want to keep things simple, and I'm just going to extend the wire again, just using a buck connector. This will work just like the other ones, with that crimps, that and come back and seal up the heat shrink, and then we can find a good spot to attach our ground wire. So what I figured I'm going to do, is just to use our existing ground here on our trailer frame. And what you want to make sure of, if your trailer is rusty like this one, you can you use a wire wheel or some sandpaper, something like that, and just clean up that metal, so we get a good connection. That being said, we'll take our wire, and I'm going to use a ring terminal, and crimp that on.Then I'm going to use a new self tapping screw to secure it. And you can find both these here at etrailer. So lets get that. Started in there by hand somewhat, come back with the impact and run it down. So now that we have everything hooked up, it's a good idea to test our wiring, that way we know it's working properly. I suggest using a tester box like this, to do that. You can use your tow vehicle, but keep in mind, if you do happen to have an issue, it could be related to your tow vehicle. So, by using a box like this, that kind of eliminates that there.But would that being said, I plugged in, I'll go ahead and turn it on, and run through all of our lighting functions. So, we'll go ahead and power up our tail lights. We'll try our left turn signal, our right turn signal, and our brake lights. So now that I've verified everything is working, what I went ahead and did, is I see some electrical tape, and just really taped everything up nice and tight. And just to help clean up our install a little bit, I'm going to need some wire loom, and keep everything covered. If you want to do this as well, you can always grab some loom right here at etrailer. And that'll finish up our look at and our installation of the wesbar wishbone style wiring harness..

Customer Reviews

Wesbar Wishbone Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 18" Long - 002402

Average Customer Rating:  4.8 out of 5 stars   (212 Customer Reviews)

Wire your trailer with this universal, splice-in wiring harness so that you can connect the trailer's wiring to your vehicle's during towing. Wishbone design removes need for a jumper wire between tail lights.


Just what I wanted. No one had one in stock in San Bernardino Ca. I searched auto parts, trailer supply and rental yards. i found plenty of 4 pin but with 4 wire harnesses, i needed a 4 pin 5 wire hook up. Took all of 35 minutes to install in 5 steps
1. tinned wires on connector and trailer
2. soldered wires together
3. installed shrink sleeve
4. wrapped harness in protective harness
5. hooked up to vehicle ops check good.
See photos below. Thank you

Works great no problem. Glad I made the investment.
Phillip L - 05/22/2022


This product worked wonderfully for my double jetski trailer. Splicing this in was definitely easier than rewiring the entire trailer. Extremely fast packing as well. Ordered on Sunday night. Packed and labeled Monday morning. It was on my porch by that friday.


I received this trailer light wiring harness in a timely manner. I got it all connected a few days later and it's working as expected! was the only place I was finding one of these 4-pole light connectors with the wishbone. Every other online retailer I checked neglected to have the wishbone wiring, which I needed for wiring up both sets of lights on my utility trailer. Thank you Etrailer!


Got what I wanted. Cost of delivery was 3 times price of the part to get in 2 days. Need fast delivery service at low price. Old part was dragged on ground and needed replaced.


I could not find a 4 pin 5 wire harness at the local auto parts stores, this is exactly what I needed. Service was great and the harness arrived ahead of the scheduled delivery date. Thanks etrailer!!


Delivery time good! Product as described. Only issue is the white wire on connector came out of plug assem.E-trailer folks are great to work with on your trailer needs.


Just what I wanted and it connects well with the van Wesbar plug. Some brands don't mate to the Wesbar plug.

Ordering was easy. I tried to buy locally buy they did not have it. By the time he had said go try... I was already ready to order from I have used before and always have been satisfied and prices are good. Nice that they start to strip the wire ends, but move the insulation, but leave in on so it protects the end of the wire.

It shipped on time and was delivered on time around the year-end holidays.


Wow! Super impressed with this company. The item ordered was just what I needed and delivery was prompt. Loved how I could track the order easily. I was so happy to receive the wiring harness in time to use with my boat trailer to get my boat out of the water for the impending hurricane. I will definitely be ordering from this site again.

Great. Wiring harness working fine a year later!
Donald - 08/02/2021


Fast and easy service. has all the right parts when you need them!


Great service, but I haven't installed it with the blast of winter we just had! But soon...

Out with the old and in with the new. Taking only minutes and working well!
James K - 04/26/2022


Exactly what I needed. Easy hook up & lightning fast delivery. I will be using etrailer for now on.


I looked for the Wiring Harness at all the Auto Parts Stores, Ace, Big Box Stores, Etc., could not find a 5 wire to 4 pole flat wiring harness. I googled wiring harness on the computer and etrailer appeared, found what I was looking for, ordered the part and it was delivered within 5 days. Very good service.


Not an exact replacement but worked out good. Replaced a broken Wesbar brand. This one was a good replacement and mounted the same way.


New truck was higher than the old one. This gave me just what I needed to plug in my trailer





Worked as advertised

Sold the trailer, but it worked great
Joe - 05/01/2022


Part was great at first but now it is slowly not working, bad connection somewhere in the plug.

I would check the ground wire for debris as that is the most logical explanation. If you have a circuit tester at home that should clear up really quick if it works or not.
-- Etrailer Expert Sierra K - 12/01/2021


Thought I was ordering a complete 18’ wiring harness and pigtail not an18” pigtail .


The harness fit my needs perfectly. It completely solved my issue with my boat trailer. As always e-trailer's service was outstanding.
Thanks. I will be back.


The mechanism I bought a year ago is working fine.


I incorrectly ordered a wiring harness for my now 10 year old Pace covered single axel trailer. It arrived promptly and I promptly determined that it was the wrong fitting. I contacted Brandi at etrailer and told her what I needed. She quickly gave me a [$] return UPS sticker, identified the correct harness for my trailer and had me back on the road in no time. I could not be happier with my etrailer purchase.


This was the correct connection for my trailer to Subaru. I haven't noticed any corrosion yet.


Great product wired it in one shot wire's are labeled to what wire is what light couldn't get an easier


I haven't wired it up to my trailer yet, but it is exactly what I needed. I went to several auto and trailer parts stores in my area and no one had this particular harness. I will purchase from you guys again!


Every item that I purchase is as advertised at a good price and arrives fast

Show More Reviews

Ask the Experts about this Wesbar Trailer Wiring

  • Replacement Trailer 4-Way Recommendation for 4-Way with 6 Wires Ran to It
    You'd need a wishbone style 4-way replacement like the Wesbar part # 002402 which you'd wire in color for color. The only wire you'd need to run down into a single wire is the white wire since you have a wishboned ground circuit as well as the Wesbar does not have that.
    view full answer...
    Image 1 for
  • Replacement Wishbone Style 4-Way Trailer End Plug
    Thanks for that photo and what you have is a wishbone style wiring harness, although the colors are inconsequential for a harness because there isn't a standard wiring code that is color-for-color. You can replace your harness with the Wesbar Wishbone Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End # 002402 but you will need to wire it by function. This means you'll have to apply 12 volts to your wires via a battery to determine the function of the wires so you can connect...
    view full answer...
    Image 1 for
  • Installing New 4 Way Connector on Trailer with Yellow, Green, Yellow/Brown and Green/Brown Wires
    It sounds like your trailer had a wishbone style wiring harness. A wishbone harness splits the running light circuit at the connector so you do not have to run a jumper from one side of the trailer to the other side. To replace the plug you're going to be best served by using a wishbone harness like the Wesbar Wishbone Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 18" Long # 002402- you can still use a regular 4 way, but it will be more work. Using a wishbone harness...
    view full answer...
  • How to Convert a Wishbone 5-Way to a Wishbone 4-Way Trailer Connector
    It looks like you have a 5-way wishbone wiring harness. I cannot say for certain but my guess would be the that the following are true: White Wire = Ground Green/Brown = Right Running Light Yellow/Brown = Left Running Light Yellow = Left Turn/Stop Light Green = Right Turn/Stop Light Red = Reverse Light/Brake Output In order to test this you will need to apply 12 volt power to each wire and see which circuit it activates. For a 4-way wiring harness to replace this you are going to want...
    view full answer...
    Image 1 for
  • Wiring for Five Trailer Wires to 4-pin Connector on Tow Vehicle
    It would seem that your tow vehicle has a typical 4 wire connector where white is ground, green is the right turn signal, yellow is left turn signal and brown is running lights. In this configuration the brown wire from the car connects to the brown wire from the trailer. Also you tell us that your trailer has five wires which are connected to a flat 4-pole connector. It appears that you have a "Wishbone" configuration where two wires for the running lights are merged together for one...
    view full answer...
  • Replacement 4-Way for Trailer with 5 Wires Ran to It
    It's pretty common for 4-way wiring to have a total of 5 wires ran to it as the running light circuit runs to both sides of the trailer. This is referred to as wishbone 4-way wiring. We have an 18 inch 4-way with wishbone wiring with part # 002402 which would wire right up to your trailer. Or if you want to convert to a standard 4-way type of wiring you could run both of the wires together on your trailer wiring for the running light circuit and then go to a single wire 4-way.
    view full answer...
  • Troubleshooting 4-Way Trailer Wiring with 5 Wires That Isnt Working Correctly
    It sounds like your new trailer wiring is designed to connect to a 4-way wishbone connector where there are two brown wires for the running lights. The yellow/brown wire is for the running lights on the left side and the green/brown wire is for the running lights on the right side. This makes it so you don't have to use a jumper wire to go from one side to the other. What you've tried to do should work; connecting the two brown wires to the single brown wire on the connector. Since...
    view full answer...
  • Wesbar Trailer Side 4-Way Recommendation with Short Wire Leads
    The Wesbar trailer end 4-way we offer that has the shortest amount of wire lead is the part # 002402 which has an 18 inch wire lead.
    view full answer...
    Image 1 for
  • Recommended 4-way To 5-way Adapter For Motorcycle Towing Motorcycle Trailer
    Typically the blue wire on a 5-way connector is for reverse lights. If you do not need the reverse lights you can actually just plug the 4-way connector directly into the 5-way connector. If you need the reverse lights to work you will need a 4-way to 5-way adapter # C57187 installed on your motorcycles 4-way and will need to connect the blue wire to the reverse light wire with the included quick splice. I included a video of the # C57187 being installed for you to take a look at.
    view full answer...
  • 4-Way for Vehicle Side to Match Wesbar Wishbone 4-Way # 002402
    Since the Wesbar wishbone 4-way part # 002402 is a standard 4-way all you'd need is something like the part # HM48030.
    view full answer...
  • Will a Trailer 4-Way Plug Into a Vehicle 5-Way Without Adapter
    Yes, you can plug a trailer side 4-way trailer connector part # 002402 into a vehicle side 5-way connector part # HM37908 without any adapters needed.
    view full answer...
  • What Gauge Wire Does The Westbar Wishbone Wiring Harness Use?
    The Wesbar Wishbone Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 18" Long Item # 002402 uses 12 gauge wire. I recommend Deka Heat Shrink Butt Connector - 12-10 Gauge - Nylon Insulation - Yellow - Qty 5 Item # DW05745-5
    view full answer...
  • Replacement 4-way Connector For 2018 Shorelandr Boat Trailer With Two Brown and White Wires
    I am happy to help! To replace the 4-way connector on your 2018 Shoreland'r Boat trailer I recommend the Wesbar Wishbone Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 18" Long # 002402. The reason your harness has 2 brown wires is one runs down each side of the trailer, instead of having to run a jumper wire between the two sides. It is a little odd that it has two grounds (white wire) but you can connect them together and then connect them to the white wire on the...
    view full answer...
  • How To Replace 4-Way Trailer Connector with 6 Wires
    I do have an option for you but none of our 4-way trailer connectors have six wires. That said, you can still easily install a 4-way trailer connector with four wires in place of a 4-way trailer connector with six wires. For this, I recommend using the Hopkins Endurance 4-Way Flat Trailer Connector part # HM48110. The two white wires and two brown wires will be tired together when connected to the single white and single brown wire on the new connector. I recommend using the Deka Heat Shrink...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Recommended Solution to Re-Wire 4 Way Trailer Plug with 8 Wires
    I have a solution for you, but you will need to cut off your existing plug and re-wire this to a new 4 way connector. Your current trailer plug appears to have wires for the left (yellow) and right (green) turn signal, brown wires for the running light circuits on the left and right side of the trailer (one for each side), ground wires for all of these independent of each other and a ground for the plug itself that connects to all of the other wires. I recommend using the Wesbar Wishbone...
    view full answer...
  • How to Make 4-Way to 12 Volt Power Outlet
    Our best solution for that would be the part # 329-GC018 which is a cigarette lighter style of 12 volt connector that you could wire to the brown and white wires of a 4-way like # 002402. The brown would go to the red and the black to the white.
    view full answer...
  • Wiring A 5 Wire Wishbone Trailer To Vehicle's 4 Way Flat
    It sounds like you have a typical wishbone wiring setup which usually matches the following: green for right turn/stop, yellow for left turn/stop, brown for taillight/side markers, and white for ground. You would want to wire the trailer to the vehicle in a color to color manner; and for the trailer's brown/green and brown/yellow wires, those get wired directly to the vehicle's brown wire. To make things simple, you can use something like Wesbar Wishbone Wiring Harness with 4-Pole Flat...
    view full answer...
    Image 1 for
  • Recommended Trailer End 4-way Connector To Replace Incorrect End On Trailer
    It sounds like your trailer and truck both have a vehicle end 4-way connector. If this is the case you can use the Wesbar Wishbone Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 18" Long # 002402 and heat shrink butt connectors # DW05744-5 to replace the harness on your trailer. If your trailer does have the correct trailer end connector I recommend using the 7-way to 4-way adapter # HM47365 to give you the vehicle end connector you need to plug in your trailer. I...
    view full answer...
  • Is a Longer Version of Wesbar 002402 Trailer Wiring Harness Available
    Would a 20 foot harness work for you? If so, Wesbar offers a 20 foot version as part # 002220. This is not a wishbone style harness. You'll need to run the harness down one side to the taillight and then daisy chain over to the opposing taillight. A wishbone style is also available as part # W002230. A wishbone style harness splits the running lamp circuit into two legs so you and run the left turn/brake lamp circuit and one running lamp circuit down the driver's side and the right turn/brake...
    view full answer...
  • How To Convert 7-way European On Trailer To US 4-way Flat Connector
    The easiest way to plug your vintage Dethleffs German camper trailer that has a 7-way European connector into the 4-way connector on your 2017 Dodge Grand Caravan is by replacing the connector on the trailer. You will need a trailer end 4-way flat connector # 002402 and a 2-wire to 3 wire converter # 118158. You will make the connections with heat shrink butt connectors # DW05744-10 following the included diagram. If you do not want to cut off the 7-way European connector on the trailer...
    view full answer...
    Image 1 for
  • Replacement 4 Flat Connector For A DK2 Trailer
    When it comes to replacing the 4 flat connector on The Detail K2 Mighty Multi A-Frame Utility Trailer - 7-1/2 foot Long - 1,640 pounds # K2MMT5X7 The Wesbar Wishbone Wiring Harness with 4-Pole Flat Trailer Connector - Trailer End - 18 inch Long # 002402 will be a good replacement. The Wesbar harness will have to be spliced with the existing wiring on the DK2 trailer after you cut the bad 4 flat connector off of the trailer. The wiring configuration is as follows: White - Ground Wire Yellow...
    view full answer...
  • Recommended Replacement 4-Pole Trailer Connector for Wishbone Type Trailer Wiring Harness
    The # 48195 would be a handy item to have around in case of emergency, but It's not a permanent fix and I wouldn't recommend using it for a 5 wire wishbone harness. The # 002402 would be a better choice but I prefer the Hopkins # HM48110 because of its larger gripping surface that makes using the connector much easier. For installation to your existing harness, you'd connect the two brown wires from the trailer harness to the brown wire on the # HM84110, then match up the yellow, green...
    view full answer...
  • Replacement 4 Way Trailer Wiring for 6 Wire Wishbone Harness
    I have a solution for you, but you won't want to use a 5 flat connector since the additional wire there is used for the reverse light circuit-which is not present on a 4 way flat. It looks like you've got a wishbone wiring harness with 2 running light circuits and also 2 ground circuits. To replace this, I recommend using the Hopkins Endurance Quick-Fix Replacement 4-Way Flat Trailer Connector w LED Test Lights # HM48192. To install this you will simply match the current wires to the correct...
    view full answer...
    Image 1 for
  • Electric Brakes And Lighting For The Roadmaster Tow Dolly RM3477
    The great benefit to using a tow dolly is that it eliminates the need for installing a base plate, installing difficult wiring, or purchasing an expensive supplemental braking system. Also the Roadmaster Tow Dolly with Electric Brakes # RM-2050-1 is fully wired for brake lights and turn signals. The Tow Dolly comes with bare wires so you would need to purchase a 4-way # 002402 or 7-way connector like # 54-67-525 seperately to match up to your tow vehicle's wiring. Included are video...
    view full answer...

< Previous

Do you have a question about this Trailer Wiring?

  • Why

    At we guarantee:
  • Highest quality trailer wiring for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate trailer wiring information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video by:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Cole B
Installed by:
Cole B
Employee Ryan G
Installed by:
Ryan G
Employee Brian B
Written by:
Brian B
Employee Daron K
Edited by:
Daron K
Employee Brian T
Updated by:
Brian T
Employee Hannah L
Updated by:
Hannah L

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.