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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
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Trailer Wiring
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002402 - Trailer End Connector Wesbar Trailer Connectors
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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 etrailer.com or call 1-833-496-1390 for expert service.
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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.


Features:

  • 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


Specs:

  • 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 Satisfaction Score:


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   (263 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.

by:

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


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


by:

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.




by:

Coming back from my last camping expedition I broke the wires to my trailer. Got on the web site for e trailer and ordered the part. The right part came in quickly. I’m so glad to have a site to go to in an emergency. Happy camper




by:

Exactly what I needed. I used a battery to check the lights through the wire harness with multimeter leads. The plug harness wire colors are an exact match to the trailer wiring.




by:

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! Etrailer.com 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!




by:

So far so good. The wiring harness came on time as expected and the quality of the harness is in good shape. I will hook it up tomorrow and we shall see…! Many thx!




by:

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.




by:

good stuff reliable delivery thanks etr ailer




by:

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!!




by:

Would like to see a wiring diagram come with the part. Another than that, too easy to put on.




by:

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




by:

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.




by:

Just what I needed for my trailer appli cation




by:

I have a plug that was nearly broken so I looked at images to order this. Got it and put it on today. Perfect match for a 4 way flat wishbone plug.




by:

Matched right up to my trailer harness




by:

Everything I ordered fit Perfect and Love the video's they are very clear and makes any installation easy to do.




by:

The product was an exact match and would highly recommend.




by:

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.


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


by:

Web site was user friendly. Price seemed reasonable. Received items as ordered. Items came before scheduled.




by:

Exactly what I needed and at
a good
price.will order again from etrailer




by:

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 etrailer.com I have used etrailer.com 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.




by:

Came with two wires completely stripped and broken strands.




by:

Good product and simple install




by:

Harness worked out perfectly!!




by:

Exact right part need to get back on the road safely



25
263
Show More Reviews

See what our Experts say about this Wesbar Trailer Wiring

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    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.
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  • 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...
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    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...
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  • 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.
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  • 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...
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  • Trailer Wiring Connector for Trailer 4-Way Wiring That Has 8 Wires
    While we don't have a 4-way connector that has 8 wires total that run to it you can use the Wesbar Wishbone connector part # 002402 which has two wires ran for the running light circuit. You'd just need to match up the remaining circuits to this harness by running the two wires to the single wire on the connector's wiring.
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  • 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...
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  • 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...
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  • 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.
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  • 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.
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  • 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...
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  • 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.
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  • 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.
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  • Replacement 4-Way for Trailer that Has 8 Wires Ran to Connector
    It really just depends on what the wires are for. Most likely you have several ground wires among the 8 as well as a couple running light circuits in there as well. You just have to run all of the wires to the correct circuits and if you have to run more than one trailer wire to a 4-way wire it will still work just fine. We have the part # 002402 which has two wires for the running light circuit. The rest of the circuits would just need to be ran together on the corresponding 4-way circuit.
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    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...
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  • 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...
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  • What Gauge Wire Does The Westbar Wishbone Wiring Harness Use?
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  • Availability of 18 inch Long Wishbone 4-Way Trailer Wiring Harness
    We have exactly what you are looking for with the Wesbar Wishbone Wiring Harness with 4-Pole Flat Trailer Connector # 002402 which is an 18 inch long 4-way harness that has the running light circuit split off for both sides of the trailer like what you mentioned having. You'd run your brown/yellow and brown/green wires to each of the brown wires of this harness and then match the other colors by color and you'd be set. Only thing else you'll want is heat shrink butt connectors like the...
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    To replace the 4-Way Flat connector on your utility trailer I recommend picking up the Wesbar Wishbone Wiring Harness # 002402 and then making your connections using the Heat Shrink Butt Connectors # DW05744-5. This has the 5 wires coming off of the connector and it sounds like you'll be connecting them per color. Just for reference though, here are the different functions you should find on each of those wires: Green: Right turn/brake light Yellow: Left turn/brake light Brown: Tail/running...
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  • Recommended Trailer End 4-way Connector To Replace Incorrect End On Trailer
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  • Replacing 4-Way Flat Trailer Connector On Older Trailer
    Your trailer appears to have a wishbone style harness like the Harness # A35W42B where the brown wire is for any running/clearance lights, yellow wire is for the left turn signal/brake light and the green wire is for the right turn signal/brake light. If you are replacing the End Connector # 002402 you will simply align your wires brown to brown, yellow to yellow, green to green and the white wire will connect to the ground wire which I do not see in your picture. You can always test...
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  • 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...
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  • 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...
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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
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Installed by:
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