Videos are provided As a guide only. Refer To manufacturer
installation instructions And specs For complete information.
Tow Ready replacement 7-way flat pin and 4-flat combo adapter harness for Toyota Tundras with a factory socket.
Replacement socket for the following Toyota Tundras with a factory 7-way:
Video of Replacement Multi-Plug 7-Way and 4 Pole Trailer Connector
Videos are provided As a guide only. Refer To manufacturer
installation instructions And specs For complete information.
Today we're going to review part number 20137. This is the Tow Ready Replacement 7-way and 4-way Flat Combo Adapter Harness for vehicles with a factory 7-way tow package. This is a custom fit part number. It is designed to fit the 2003 - 2006 Toyota 4Runner and Toyota Tundra with the factory 7-way connector, also the 2003 - 2004 Toyota Sequoia with the factory tow package and the 2003 - 2006 Lexus GX470 with the factory tow package. Since this is a custom fit part number, I would recommend to go to our website and use our fit guide to put in your year and model vehicle. It will show if this is the correct part for your application. This will give you the ability to tow trailers with either a 7-way, like that, or the 4-way, using different style trailer connectors. The 7-way is in a nice durable plastic shell. It has a nice hinged dust cover to protect the terminals when not being used.
The 4-way also has a nice dust cover that's over the 4-way when it's not being used. This will provide both a 7-way and 4-way covered trailer connector. The mounting bracket and the mounting hardware is included, a nice set of instructions. One note: the vehicle you're installing this on must have the factory 7-way in order for this harness to fit. Basically it's a very easy fitment. Just plug it in.
No cutting or splicing of wires. Basically what you'll do, go to your vehicle, you'll have factory connectors on the rear, there's a 4-pin and a 3-pin. You just line those up. Plug them in. Then what you'll do is take your mounting bracket, slide your mounting bracket onto here, actually you'll want to do that before you plug it into your connectors on your vehicle. Once you get your mounting on then go ahead and plug this in.
Line the holes up on your 7-way with your mounting bracket, then you'll see the two holes on the top that you install it onto your vehicle. If you'll notice the other nice thing is there's a cut out right here on the side. That's for your 4-way. If you just slide your 4-way onto that mounting bracket it'll give you both the 7-way and the 4-way right next to each other, ready to go. That should do it for the review on part number 20137, the Tow Ready Replacement 7-way and 4-way Flat Combo Adapter Harness for vehicles with a factory 7-way tow package. .
Average Customer Rating: 4.5 out of 5 stars (81 Customer Reviews)Tow Ready replacement 7-way flat pin and 4-flat combo adapter harness for vehicles with a factory socket.
I replaced the 7-way trailer connector harness with this product. I own a 2005 Tundra. The original connector was damaged when I backed into a rock I didn't see. This product is superior to the stock connector, for several reasons: [a] it also includes a 4-way connector, which increases towing flexibility, [b] overall, it is more robust than the original (in my opinion), and [c] the wire harness is better integrated into the connector, which prevents water and dust intrusion. The wiring harness is shorter than the original, but the end plugs connected [new male to existing female] without issue - although the stock wire bundle holding strap positions could not be used. In fact, based on the fit, I abandoned the holding straps altogether. Contrary to one reviewer, who questioned whether the plugs would remain connected due to the stretch, the plugs snap together. As several other reviewers have mentioned, the bracket holes are misaligned slightly and are too small for the stock bolts. By drilling these holes out with a 5/16 bit, the fit is nearly perfect. The product sheet implies the connector is an add-on [as evidenced by the included self-tapping screws], not a replacement, as advertised. Regardless, this is a quality product that installs easily and quickly for the DIY customer with basic tools. In addition, it saves a bundle of money in avoiding a purchase at a dealership ! ! ! I just checked with my Toyota dealer and they wanted just over $200, and that's with a 10% discount. 88968
by: Brett D04/30/2012
Here's a first, this "RARE" 1- The young man that answered the phone "TITUS T" actually knew the answers to help me, and was right!. (spoke english) 2-The part came on time as promissed and I recieved e-mail notifications the entire time as to the shipment status. 3- When the part arrived it was O.E.M. as promissed and 170.00 dollars cheaper (no kidding) than the Toyota dealership. 4- The part actually plugged right in as promissed!!! I think I found somebody that I will conduct business with again, I am not a big fan of internet purchases because of bad return policies etc. But if they get it right the first time like these guys who needs a return policy? I give them two thumbs up!! 38849
by: Bryan P.05/22/2012
As always, e-trailer products were delivered super fast, customer service was top notch and the product itself was great quality - even better than factory part with the addition of the standard 4-way connector - so why the poor rating???? Upon eager anticipation of the install, I find my factory 3 way connector piece has a male end, while the replacement connector also has a male end - this won't work. I would suggest you remove your factory connector to double check so you don't fall victim to this as I did. I was looking to replace a 2004 4Runner Sport Edition. 41283
by: John B.06/15/2012
First, let me say, I don't usually write reviews... However, this product rocks. My used Tundra had a broken multi-plug and I was thinking about heading out to a junkyard to get a replacement as Toyota wanted +$150.00 for a new part. I found etrailer online and ordered it. Other than having to drill out the two holes in the bracket that mounts to the bottom of the bumper, the install was flawless and easy (less than 10 minutes). I have already told two friends about etrailer, and I will be shopping here again if/when I need additional trailer accessories. 44353
by: Fred D.04/16/2014
I received my 2003 Tundra trailer wiring pigtail in short order which is a pleasant surprise. I haven't installed it as yet because I haven't been able to get the old one off as yet. I'm scheduled for an appointment with Toyota for an oil change and they will take the old one off. But I have compared the new one to the old one and it appears to be an identicall fit. Now instead of having a seperate 4-way flat hanging down I'll have one attached to the 6 way plug. My complements on the quality and fit of this item. 125369
by: Mike M.04/16/2012
Solid product. Harness connectors were spot on. I replaced a factory 7 pin connector. There are two areas for improvement. First, the bracket mounting holes were slightly smaller than stock and had to be drilled out a little. Also, the spacing was off about a 1/16", but the drilling took care of that. 2nd, the harness is about 3 to 4 inches shorter than stock, so the original wire loom holding strap positions could not be used. Otherwise, great connector. The 4 pin flat connector is a great addition! 37435
by: Hewell W08/31/2011
George J, Nathan S, Katie The replacement multi-plug 7-way and 4-pole trailer connector was just as I excepted. I will always use etrailer for any trailering needs. Good quick service. Hewell W 23276
by: Kurt M.01/31/2017
The product was easy to install. One minor alteration was needed. I had to enlarge both of the mounting holes ever so little. Just a few runs with a small rat tail file did the trick. It is sturdier built than the OEM. All the pigtail wiring was flawless on the product. No more trouble shooting when I switch trailers back and forth. Also, I no longer have to use an adapter when switching between 7way and 4pole wired trailers. HIGHLY RECOMMEND IT. 337268
Product is super but... It did NOT fit on my 2004 Sequoia without my needing to move the location from the original. After reading the other reviews, I bought it assuming that if I removed the original wire holders, it would stretch and still plug in. Mine did not. My original wires were 24 inches long, these are 12 inches. That is a big difference. The folks at e-trailer were great but in the end, I did have to relocate my plug. 98439
by: Barrie B07/02/2014
Connected to the vehicle wiring harness with no problems. While attaching the base unit to the vehicle, I had to attach it to the bumper which is plastic, so I used a stiffener to the bottom of the bumper. It was easier to pre-drill the stiffener to the unit on the floor for ease of mounting unit to bumper. It was mounted left of the hitch and it looks very good not to say so myself. Barrie B GYSGT USMC Quantico Va. 138761
This product did the job in replacing the factory wiring harness. I only had to modify the mounting holes spacing slightly by drilling out the holes to accept the original screws. The supplied mounting screws were much less substantial than the originals and did not fit the nuts that held the original harness. The job took about 30 minutes. 63995
This harness fixed my problem. The OEM harness got some salt water in it and was causing my trailer lights to not work. The mounting bracket that attaches to my 05 Tundra was a little off but was easy to fix with a drill. Great product and the built in 4 way is very nice, i don't have to use the 7 Way adapter anymore. 217342
by: Scott N.04/30/2013
I purchased this harness to replace the OEM harness that broke off. The replacement harness was well built and installed easily. I just had to oversize the bracket holes because I was using the original hardware. If the spring loaded cover had a rubber weather seal it would have got a 5 star rating. Great product! 78435
by: Kevin V12/22/2016
Harness was super easy to install. I did tweak the install by using better screws than what were provided for the frame. I used self tapping screws that were much larger. The only troubles I had was unplugging the part on the Truck but the new parts plugged right in. No more round adapters to use anymore. 327400
by: Jason M.07/11/2016
Great product! Easy to install and has worked great. My factory wiring harness had shorted out and once I got it off it was on with this one in no time. I really like having both the flat and round plugs so I don't have to worry if I don't have my adaptor for some reason. 270788
by: Eric E.02/19/2014
The holes on the mounting bracket that mounts on the bumper has to be drilled out. Other than that very happy with this product. Would recommend this to any one. It is equal in pries to a 7 pin to 4 pin adaptor and is far better and more versatile. Strongly recommend 116984
by: Douglas Tervooren08/31/2012
The product was exactly what I needed. The only problem I had was bolting the mount back onto the frame of my truck. The hole spacing in the mount did not match the original spacing by about .25" so I had to drill the mounting holes larger to match my bolt holes. 53660
by: Bob K05/01/2014
I purchased as replacement wiring for a 2004 sequoia truck. Although the connectors are correct, the wiring is too short. Either you need to change the location of the housing box or add 9 inches of cable. Would not recommend purchase. 128497
It was as expected... had to drill out the mounting bracket to use the same screws on my truck,,, but I had already read that was the case .. the cable is short but it worked just fine... installed in less than 10 minutes. 187519
by: Scott B.10/03/2013
Product quality was good.Mounting bracket a little "cheaply made"not very strong. Also bracket holes did not match up with factory holes in bumper.Needed to make holes bigger to mount.Overall very happy with product. 102351
by: Ben H.06/22/2012
Excellent service. The product arrived quickly and is a better product than the Toyota one. My trailer lights are working for the first time in 3 years! Would definitely do business again. 45184
by: Bob W10/09/2011
Shipped fast and was exactly as represented. Easy to Install. Why pay the dealer's outrageous price of over $185 when you can get this instead for a 1/4 of the price. Thanks etrailer.com ! 25297
The harness was way too tight - wires were short for my 2004 Sequoia. I was just able to connect it. Im not sure it will stay connected it was so tight. Shipping was great. 59444
by: Shawn O05/31/2013
Plugs and plays easily, works great! I had to bore out bracket holes but it was quick and easy. My auto dealer wanted $261 for this part, saved a lot of money. 82690
by: Holden W.05/02/2013
Nice product Connector hooked up perfectly with my Toyota Tundra Also it was a quarter of the price Koons TOYOTA IN WESTMINSTER MD WANTED TO CHARGE ME THANKS 78684
As others have said the mounting holes are to close together but that was a easy fix. Other than that it was easy to install and works great. 117273
by: Gary M02/08/2017
Product was right, price was SUPER, but I chose economy shipping. It came 16 days after ordering, from their warehouse, not from China. 339981
Product and pricing excellence is what etrailer is all about. They bakc it all up with great customer support. thanks etrailer. 344185
by: Jeremy E05/16/2015
Fit 06 Tundra perfectly. Installed in 15 min. Used existing bolts to mount the bracket, just had to drill out the new holes. 193534
fit and works just like its supposed to. I too had to drill the holes out a little but otherwise plug & play 77235
by: claudio tirado05/10/2013
It didn't work I had to get a mechanic to cut the wires and rewire the whole thing for it to work. 79756
The harness fit with no modification, plus I saved $150 versus getting it from the dealership. 71460
Great news!!!! It's like my mac, you just plug it in and it works. Thanks for a great product. 59292
So Easy To Install! Looks And IsWay Better TheN The 200 DollarFactory One From Toyota. 78823
Perfect fit for my 03 Tundra. Just swap the broken one out. Delivery was FAST! Thanks. 51648
by: Allan H.04/15/2012
Everything mounted well and wiring harness plugged into existing harness. Very happy 37298
by: Randall R06/03/2016
Shipped fast. Part fit my 2004 Toyota Tundra perfect. Went on easy with no hassle. 256644
by: Noah C.05/27/2015
Perfect fit! Easy installation! All hardware included. Took 5 minutes to install! 198272
by: Glenn W.08/14/2014
I was very happy with the quality of the product. Install was easy too. 146778
by: Laszlo L.06/09/2012
was easy to install . ver reasonable price ; good customer service!!! 43446
by: Ben kenney05/30/2012
Great replacement and great price!!!!!!!!!! Thank you for you help!!!! 42036
Fits perfect, easy installation. Quick service from etrailer. 77256
Fast delivery, good customer support after I got product 126572
by: peter o08/13/2012
Very pleased with the product and the fast delivery. 51582
by: Steve S08/09/2016
Very quick on the shipping and very easy to order. 282011
Arrived as advertised and super quick! Recommended. 59835
by: Larry M.06/12/2015
Top notch! Worked as advertised. Fast S hipping. 202863
Easily installed and it seemed to work 255742
Connected and worked as advertised. 125575
Great service and friendly people. 215961
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