Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector
Item # 41155
Retail:$28.11
Our Price: $19.98
You Save: 29%
Confirmed to Fit
2008 Ford Expedition
with factory 7-Way
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- Reviews (69)
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2008 Ford Expedition - Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector
- Trailer Hitch Wiring
- 4 Flat
- No Converter
- Hopkins
Quickly and easily install a 4-way trailer connector on your Ford Expedition with this custom harness. T-connector plugs directly into OEM tow package wiring harness - no cutting or splicing required.
Features:
- Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
- Designed for use with a factory tow package
- Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
- Connects quickly and easily - no cutting or splicing
- Locate connection point behind rear bumper
- Plug in connector
- Protective connection terminals resist corrosion
- Comes with dust cap for 4-way flat connector, cable ties, and terminal grease packet for electrical connections
- 90-Day limited warranty
Installation
This custom-fit T-connector plugs into your vehicle's factory tow package wiring harness, which is located behind your rear bumper.
Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.
41155 Plug-in Simple Hopkins T-Connector with 4-Pole Trailer Connector
Installation Details
California residents: click here
Customer Satisfaction Score:
87% were satisfied with this product
13% of customers were not satisfied
- Wrong item was ordered
- Product did not meet expectations
- etrailer mistake
Customer Reviews
Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector - 41155
Average Customer Rating: 4.6 out of 5 stars (69 Customer Reviews)
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into OEM tow package wiring harness - no cutting or splicing required.by: David 03/27/2024
Fit perfectly the whole hitch and wiring install was a breeze.
by: Tim07/04/2023
Hitch is on! Piece of cake to install, everything lined up perfectly. I ordered wiring for my car according to my cars build sheet stating that it was pre wired for a tow package but I'm unable to locate any type of plug in so I'll need to return the one I ordered and get the other type. Please advise me the best way to do that.
by: Steven 03/07/2024
2022 Nissan Titan
Just what I needed..came in early than planned and fit right..thanks
by: Carlos 07/07/2023
Worked as it should. Only used with a small trailer. Good product as always with etrailer. If not good, they make it right.
by: Leslie 01/02/2024
Was exactly as described
by: Donald04/30/2021
Parts was on time & easy to install works great.I will definitely used etrailer again in the future.Thanks guys
by: George B10/10/2023
Very fortunate to deal with a very kind , Caring representative.
Appreciate her concern and going the extra mile
Glad I deal with you and will continue to shop first with you every time
by: Patrick07/23/2018
2007 Chevrolet TrailBlazer
This was my first time pulling my 20 foot CC boat and brand new trailer with my 07 Trailblazer which came with the factory installed tow package including the factory installed 7 pin connector for the lights. I ordered the wiring connector item as it had a guaranteed fit for my truck. I went to install it and initially thought it did not fit correctly as I was trying to attach it by flipping up the pin connector cover underneath the rear of my truck and putting it in there, this was wrong but I did not know it....briefly went and reviewed my truck manual but it did not go into any detail on how to connect the trailer wiring, went online and finally found out that I needed to reach behind the cover piece and squeeze in 2 tabs to release the tow truck wiring connector, this is what the Hopkins harness is designed to fit into and it worked perfectly. As I just did this I have no idea what the longevity of the wiring harness will be but it does come with a nifty little cover to protect the electrical pins. As I do not plan on using it that often I removed the harness to keep it safe and sound.
by: Prrbaldwin10/01/2019
2005 GMC Sierra
Perfect fit for my 2005 GMC Sierra! The 6 narrow pin male plug fit perfect into my 7 narrow pin receptacle on my truck. It gave me parking lights, brake and my individual turn signal lights all from the four pin trailer plug. Beware of internet re-sellers that say their #41155 will work if they are showing you 6 wide male pins that will not work. etrailer is the best! Super fast shipping, fantastic customer service and all at a great price! Thank you!
Prrbaldwin
10/2/2020
I could not be happier! A year later through a sloppy winter and my Hopkins Trailer Light harness has been flawless. Keep up the great work!
by: James 01/30/2023
2015 Ram 1500
Customer Service Reps kept me informed about the status of my order. The delay was because the manufacturer was slow in shipping to etrailer.com. Once received, I was immediately notified that the item was on the way. I can always find what I need at etrailer.com, the price is great, and the service is superb. Thanks guys for always being there to help me with my needs. Keep up the GOOD work!
by: Dean 05/16/2023
Items worked as expected, needed some assistance with harness but satisfied overall
by: Torsten03/06/2017
product functioned as expected...... the round plug that fit the tow vehicle needed some slight modification.... after i year the grounding pin on the flat four plug fell out,.... simple enough fix....... still works great.
Torsten
3/6/2018
just as it should....
by: Luis10/03/2021
2014 Audi Q7
Told me all I had to do is plug it. Now I have to wire tge blue and red cable. My vehicle comes with the the 7 plug tow package. Was told to turn it into 4 plug all I had to do is plug it.
Brooke M.
10/15/2021
Thank you for leaving a review! The product page does say all you have to do is plug it in if you want a 4-pole connector. Which is true, you can just tuck those red and blue wires away unless you need the braking and an auxiliary power wire. It sounds like your trailer just has a 4-pole flat for trailer lights so you do not really need those 2 extra wires if that is the case.
by: Ernie06/06/2018
2014 Dodge Durango
The trailer wire harness for my 2014 Dodge Durango worked perfectly. It fitted into the prewired factory wire harness attached behind the bumper. I had to have the dealer program the vehicle for the lights to work. The dealer did not charge me for this service, since I was having some other work done on the vehicle they did it as a courtesy. Normally it cost about $50 to do the programming.
by: David05/17/2018
2008 Chevrolet TrailBlazer
4 stars is for quick delivery and easy ordering, I have not used the extension yet. But, thanks for everything that went so well so far.
David
5/17/2019
I have used this many times. Very easy plug and play install and works well.
by: Gus09/19/2016
2005 Nissan Titan
Ordered the Hopkins plug-in simple wiring kit with 4 pole connector (41155) for my 05 Nissan Titan. Received what I order very quick. Connected perfectly to my truck with out any issues. I was ready to attach my trailer and go fishing. It was exactly what I ordered.
by: Gary 07/15/2021
I have bought three different trailer hitches, wiring and other items.
Everything fit perfectly, the videos are excellent and the staff is knowledgeable,and patient with us do it ourselve customers.
Pricing is fair, so they deserve 5 Star rating.
by: Hot Rod04/20/2022
2022 Nissan Titan
The reason for three stars is that you'll need a relay tow package kit in order for it to work . It should come with the 4 flat plug for the trailer lights to work . Other that that simple plug & play done
by: Jeff05/04/2022
Jeep Grand Cherokee
Quick delivery and easy install. Didn't work and found out that if the towing package didn't come on the Grand Cherokee, you have to go to the dealership and have it programmed or "turned on" in order for it to work. No fault of etailer.
by: MAA09/14/2016
2007 Chevrolet TrailBlazer
Simply did what it was supposed to do. Unplugged the old wiring harness and replaced it with this new one.
by: Steve H.04/10/2014
Plug in and works great. Took off the old plug that was all green with crud. Fit my truck just as ordered. All trailer lights work as suppose to.
by: Dave 09/09/2021
Audi
Quick delivery and product seems good. Connection to my Audi is not perfect, there is no snap lock on connection. Taped it together with electrical tape.
by: Les H10/31/2019
Harness was perfect length and all connectors were correct. Only difficulty was having big hands to access vehicle tow pkg plug.
by: RON W09/23/2015
THE HITCH FITMENT WAS PERFECT. THE WIRING HARNESS WENT TOGETHER EASILY. GREAT PRODUCTS, PACKAGED AND SHIPPED FAST.
I MAY PURCHASE ONE FOR MY VAN.
THANKS.
RON WALKER
by: Michael05/30/2017
2017 GMC Sierra
I purchased a plug-in wiring adapter for my 2017 GMC Sierra. Great price, product arrived at my house quickly. Works fine, fits great, no problems. I'd recommend this company and product to anyone out there.
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Show More Reviews
See what our Experts say about this Hopkins Custom Fit Vehicle Wiring
- 4-Way Replacement for 2014 Audi Q7 with 7-WaySince your 2014 Audi Q7 had a factory 7-way you could replace it with the part # 41155 and you'd have a 4-way in place of the 7-way.
view full answer... - Trailer Wiring Harness for 2013 Toyota RAV4For your 2013 Toyota RAV4 the trailer wiring harness I recommend is the Tekonsha part # 118578 as it's the easiest to install and is the most reliable. I attached an install video for this for you to check out as well.
view full answer... - Trailer Wiring Harness Adapter for a 2014 Chevrolet Express VanThe 2014 Chevrolet Express Van if equipped with the factory tow package would have come with a US-Car connector which you can see in the attached video at about the 1:30 mark. In order to use this US-Car connector you will need an adapter to go from this to the end of the bumper, the Hopkins Plug-In Simple Wiring Harness part # 41155 for a 4-way or the 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket part # HM40975 for a 7-way. The 2014 Chevrolet Express Van if not equipped...
view full answer... - Does Computer have to be Reprogrammed to Install a Trailer Wiring Harness in a 2017 Toyota 4RunnerIf your 2017 Toyota 4Runner SR5 came with a factory installed 7-Way trailer connector then yes, Hopkins Plug-In Simple Wiring Harness # 41155 will fit. The vehicle would not have to be reprogrammed. If your 4Runner did not come with a trailer connector at all then you would need to hardwire one in using # C59496. You also would not have to have the computer reprogrammed when installing this harness.
view full answer... - 2004 GMC Yukon 4-Way Trailer Wiring RecommendationSounds like you are looking for a 4-way wiring harness for your 2004 GMC Yukon. The part # 41155 that you referenced will fit your truck if it has the round 7-way connector present behind the bumper. If you have no trailer wiring at all you instead would want the part # C59496. This is a hardwire kit that will fit your vehicle regardless of whether or not you have the round connector.
view full answer... - Will Hopkins Plug-In Trailer Wiring Harness 41155 Fit a 2014 Audi Q5 QuattroHopkins does indeed list wiring harness # 41155 as a fit for your 2014 Audi Q5 as long as it came with the factory tow package. If your Q5 does not have the factory tow package then you would use harness # 119250KIT and hardwire it in.
view full answer... - 7-Way to 5-Way Flat Trailer Wiring Adapter RecommendationThe adapter you would need is the part # A75TB. This is a 7-way round connector to 5-way flat adapter that would work great on your 2014 Chevy Silverado 1500. The fifth pin on your boat trailer SHOULD be for a reverse lockout solenoid on your boat trailer that most likely has surge brakes. 99% of boat trailers with a 5-way flat are configured like this.
view full answer... - Does Hopkins 4-Flat 41155 Fit 2002 GMC Envoy With Factory 7-WayIf your 2002 GMC Envoy has the factory 7-way, which is what I think you were referring to by "7 wire cone toe", then it has the factory tow package and yes, you can replace it with the Hopkins Plug-In Simple Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector # 41155. I have added a link below to a video review for you to check out as well if you'd like of the Hopkins # 41155.
view full answer... - Will 7-Way to 4-Way Adapter 41155 Work Well on 2014 Audi Q7The 7-way to 4-way adapter part # 41155 that you referenced will work great on your 2014 Audi Q7. All of the lighting functions will work.
view full answer... - Trailer Connector on 2008 Chevy Silverado 1500 not Working ProperlyYes there is such a thing as a connector going bad on either the tow vehicle, like your 2008 Chevrolet Silverado 1500, or the trailer. This can be the result of corrosion build-up, which can be cleaned, or damaged wires. You can also check to see if any fuses might need to be replaced. If there is corrosion build-up then you can try cleaning it first and if that doesn't work then you will need to get a new connector for your truck, If you just have a 4-Pole you can use the Hopkins # 41155,...
view full answer... - Connecting a 4-way Lighting Harness for Cargo Carrier to a 2013 Chevy Avalanche with Factory 7-wayIf you'd like to replace the 7-way trailer connector on your 2013 Chevrolet Avalanche you can do so with # 41155 that plugs into the same location your current 7-way does. Another option that will allow you to keep a 7-way is the # HM40975. This also plugs into the Avalanche's wiring but provides both a 7-way and a 4-way connector.
view full answer... - Mounting Bracket Compatible with Hopkins Plug-In 4-Pole Wiring HarnessThe Hopkins Plug-In Simple Wiring Harness 4-Pole Flat Trailer Connector # 41155 has a bracket designed perfectly for it: the Hopkins Fold-Over Mounting Bracket # HM48595. I attached a video that shows how to use it with your 4-pole flat harness. It just folds over the harness and can be screwed up into your bumper, hitch, etc. Some also use separate no-drill mounts like the #18136 long bracket or # 18140 short bracket. These are separate mounts for your bracket mount if you don't want...
view full answer... - Towing a Trailer with a 2018 GMC YukonI can help you with what you need to tow a trailer with your 2018 GMC Yukon, but from my research we do not carry a hitch for that vehicle because they include a factory trailer hitch. Your vehicle likely came with a factory tow package hidden under a cover in the center of the rear bumper. You should be able to remove that cover to reveal the trailer hitch receiver. You may also want to double check if your vehicle came with a wiring harness. We offer several quality wiring harnesses...
view full answer... - Trailer Hitch and Wiring Recommendations for a 2008 Nissan AltimaIf your 2008 Nissan Altima is a sedan you can use Draw-Tite trailer hitch # 24796. To complete your towing package, you can use ball mount # 3594 with 1-7/8 inch ball # 19256 or 2 inch ball # 19258. For trailer wiring, you can use Tekonsha harness # 118470 to add a 4-Way flat connector to the rear of the vehicle.
view full answer... - Will Light-Up Rectangular Trailer Hitch Receiver Cover Fit a 2010 Lincoln NavigatorAs long as your 2010 Lincoln Navigator has a 2" hitch receiver the Flint Hill Goods Square LED Brake Light Hitch Cover # FHG72VR will fit. If you don't already have a 4-Way flat connector (or yours is damaged) then you also need the Hopkins 4-Way Wiring # HM11140495 if you don't have the factory tow package or you need the Hopkins # 41155 if you do have the factory tow package. Attached are some review videos for you to check out.
view full answer... - Installing the Rampage Light bar on a 2020 Ram 1500The Rampage # RA960137 Tailgate Light Bar you referenced is NOT a fit for your 2020 Ram 1500. However, the Rampage # RA960134 IS a confirmed fit for your Ram. The light bar plugs into your 4-pole trailer lighting connector. If your truck does not have this connector you can install the Hopkins # 41155 Simple Wiring Harness. I have included links to these product pages and a review video.
view full answer... - How Does Hopkins Plug-In Simple Wiring Kit with 4-Pole Connector Install on a 2015 Chevy SilveradoWhile we don't have an install video for the # 41155 that you referenced I did attach an install video for a similar product that installs the same way on a very similar 2014 Chevy Silverado as your 2015 model.
view full answer... - Availability of 7-way to 4-way Adapter For 2010 Porsche Cayenne to Power Curt LED Indicator LightsIt sounds like you already have an existing 7-way connection on your 2010 Porsche Cayenne and would like to use a 4-way adapter to connect to the Curt Auxiliary LED Indicator Lights # C53201. Since the # 41155 is not a confirmed fit for your vehicle you will not be able to use it. Instead, I recommend using the 7-Way to 5-Way/4-Way Trailer Adapter for Vehicles with Lamp-Out Sensors Towing Trailers with LEDs # C35FR. This will plug into your existing 7-way and allow you to use a 4-way...
view full answer... - Trailer Connector Location for 2013 Express with Factory Wiring If you had a factory connector it would be located at the exterior rear of your vehicle under the bumper most likely on the drivers side. If you have that plug you will need the Hopkins Connector # 41155. If you do not have that plug you would need to run your 4-way from the taillights with the Tow Ready # 118392 wiring harness. I have linked all the wiring harnesses for your specific vehicle for you convenience.
view full answer... - Recommended 4-Way Trailer Wiring Kit For 2015 Audi Q7 With Factory Tow PackageThere are a couple of trailer wiring kits that are designed for your 2015 Audi Q7. If the trailer has a 4-way connector and you have no need for a 7-way connector I recommend part # 41155. This just plugs into the connector at the rear of your Q7 behind the bumper. If you want a 7-way and 4-way connector then you could use part # HM40975. This kit uses the same plug at the rear of your vehicle and comes with a mounting bracket. You then have a working 7-way and a 4-way connector at...
view full answer... - Replacing a Broken Wiring Harness on a 2007 Dodge Ram PickupIf the wiring is damaged, it is always recommended said wiring be replaced or repaired. That being said, I am not aware of a specific part to remedy this without replacing the whole part. You could use Deka Cable Ties like # DW05727-25 as a temporary solution, however. If the vehicle is a 2007 Dodge Ram Pickup, you would use the Pollak 7 Way # HM40975-11933, or the Tekonsha T-One # 118381 if you have a 4 Flat. If the trailer needs the replacement, the Wesbar 4-Pole connector # W787268...
view full answer... - Recommended Trailer Wiring Harness for 2012 Audi Q7 with Tow PackageTo install a fully functional 4-Pole flat connector to connect with and activate the signal lights on the trailer, I recommend the Hopkins Plug-In Simple Wiring Harness # 41155. This is confirmed to fit your 2012 Audi Q7 with the factory tow package and will install by plugging directly into the OEM tow package wiring harness. No cutting or splicing is required. I have attached the installation details for you to check out.
view full answer... - How to Figure Out the Wire Functions for Hopkins 7-Way Trailer Connector on 2004 Nissan TitanManufacturers can use any colors they want since there isn't really a standard for wire color and function. You will need to test each of the wires using a circuit tester such as # PTW2993 to determine the functions. Then you can attach them to the back of the 7-Way as shown in the picture I have provided. The colors you have provided are most similar to the picture, but you will still want to test the wires to make sure they go in the right places.
view full answer...
- 4-Way Trailer Wiring Harness Recommendation for 2015 Chevy Silverado 1500There should be a round connector under the rear bumper of your 2015 Chevy Silverado that would allow the 4-way harness part # 41155 to connect to. If not, you would need to hardwire a universal 4-way kit like the part # 119250KIT to your truck taillights.
view full answer...
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Video Edited:
Joshua S
Video Edited:
Jacob T
Video Edited:
Dustin K
Updated by:
Adele M
Updated by:
Wilson B
Updated by:
Alexander C
Video by:
Kathleen M
Video by:
Thomas T
Test Fit:
Randy B
Test Fit:
Brent H
Test Fit:
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Patrick
7/23/2019
I store the device inside my truck and do not leave it attached to save it from the elements, so far one year later works perfect.