How to wire a trailer 7round plug 

The video is for the "trailer plug" Only. This video explains the index location of each trailer plug function & the "standard wire colors" for TRAILER WIRING. The video is NOT attempting to point out vehicle plug wiring as each manufacturer uses different colors but the function of each location should be standard.

Brother, you just saved 2 disabled vets moving cross country from disaster. God bless you richly for your kindness!

The most easily explained video ever on connecting trailer lights to a plug !!..thank you sir !

i'm an "electrically challenged" boomer who has always been a complete goof with trailer lights. with your picture, i had tailights, turn signals, and brake lights in fifteen minutes! much thanks.

Thank you for a very clear video for wiring these correctly. I had to completely redo a dealer's job that had my right turn signal applying the brakes. Your explanation made it very easy to rewire in the proper locations of the truck's connector. I appreciate it.

When I bought my first trailer, some 40 years ago, the dealer took my truck in and rewired the truck and trailer together. We had a major trailer theft ring in the area with trailers disappearing to Mexico - sometimes with the horses still in the trailer. The rewire from the trailer dealer ship switched things around a bit so that if the trailer was hitched to a standard wired truck the running lights would flash when the brakes were applied. This ultimately broke the ring and saved hundreds of horses and trailers. I have rewired all my trailers ever since. I now own a trailer that I lend to friends, and so need to rewire it. Your explanation of location rather than colour solved my confusion over which wire needs to go where. Thank you so very much! Going out now to make it all work.

This video saved my marriage! After two unsuccessful attempts at following the color coding on the plug, I watched your video and landed the wire where you showed and bam. Every light worked like it should. Thank you very much!

Since someone previous used a variety of strange wire colors, this was the only video on the face of the earth that helped me - thank you!! 🎉🎉

You spoke clearly and at the perfect speed. Very well done.

The Best, and clearest video on wiring, that I have found. lol.... I have found 3 different ways to wire a standard 7 way plug.. Thank you....

I bought a replacement plug after wearing mine out after having it fall out on a road trip and dragging on the ground for who knows how many miles. Manufacter directions starting at the white wire and going clockwise is white/red/green/black/brown/blue and yellow in the center. Much to my surprise, nothing worked right. I re-wired it using your instructions and VOILA! Perfect. Thank you, sir! How would I ever have done this without you??? Do you know how many youtube videos show the same mistake? Almost all of them. What kind of crazy world is out there?

This is the greatest explanation of a 7 way plug!

Thanks alot for your clear teaching on trailer lights' wiring.You are the BEST Auto-electrical engineer.

I just viewed you're video, I'm a novice, Diy'er who thanks to this video have an intelligent understanding of trailer wiring. Thank you.👍 I'm learning to do all my own work with success, for myself, and helping someone in need of trailer wiring.

You are the BEST for sharing this video in the way you did. Thank you so much! I just bought a trailer and was on a tight schedule to tow it to my next location and my FJ cruiser had a different adapter than the trailer.

Your video helped me out a lot buddy! Finally got all my lights going on my gooseneck trailer. I’m putting lights all over the place now. God bless.

Never got along with my stepfather so there's a ton of stuff about cars I never learned as kid/young man. This is one of those things. Thanks for a simple but in depth explanation of what goes where and why, just got my trailer socket wired up and it's all working first go.

4yrs later, Thank You Sir! 6months go I spent almost a whole day matching different color wires only after initially crimping every wire thinking I had it. Now new project and found this video very informative.

It is very clear anybody who messes up after your video should be kept away from trailers. Thank you very much.

Thank you you are the only one who speaks to surge / hydraulic brake set up, no one talks about Boat trailers? No need backups lights on boat trailer Aloha

The after market 7pin I bought has the color wires wrong. Literally took nearly 2 days worth of fighting with it, 3 arguments with the wife. And then I found your video. Had it done and installed correctly and working in 30 minutes. Thank you!

Man, I'm telling you, I've been watching videos on this and I'm having a hell of a time wiring lights on my 1966 Alladin travel trailer. I'm ready to hire a professional. But you've got the best video on this 7 wire deal I've seen. I'm going to go around and ground every individual fixture. That has to be the problem. Anyway thanks man.

Dustin, Your presentation was straightforward, and will eliminate the stress that I've been having about wiring my trailer.

Thank you, this video saved my husband in a situation. We truly appreciate your video.

Man I have been trying to figure this out all morning. Thanks so much for explaining this like you did. RU-vid needs to make this the top video suggestion

Very good explanation . Hundreds of ways to do this. Yours is the most understandable.

Big help ! Getting ready to add a wireless camera to my enclosed trailer that needs to run off the running lights. Brown wire for power white wire for ground! learned something today. THANK YOU

Thanks for doing this video! It made fixing my trailer so much easier. Great job explaining everything

Great tutorial on wiring a trailer plug! I like the fact that you've identified each pin by its function. I know there's 2 schools on grounding lights. One is as you mentioned, running a single ground wire to all fixtures. The other is grounding each fixture individually. I prefer the latter method due to the fact if you loose that single ground point all your lights will go out. You're correct to point out that you should never rely on the hitch/ball for a reliable ground! Anyway, excellent presentation and great job explaining the function of all the pins.

Thank you, thank you my brother for being so plain and thorough with explaining the wiring. You used common sense which is not so common. Again, thank you.

Rust on the ball! I had never thought of that. Always wondered why my running lights were flashing like the holidays

Thanks. 40 years old and I learned alot.

Hi Dustin, just wanted to say thanks for such a great video. You are very clear and concise in your presentation. You have a career in teaching ahead of you.

Short and sweet, easy as ever heard, and easy to remember. Thanks

It is a good thing when someone knows what they are talking about. Gets to the point. While effectively passing that knowledge on to others.

Thank you for the simple diagram and easy to understand explanation!

Finally someone just making a clock comparison it made perfect sence thanks .

I watched this video a little over a year ago and it seemed very informative and educational so I saved the link just so i can come back and watch it if I ever needed to.. So now like a little over a year later I’m back to watch this again because the plastic rubber around the plug🔌 on my trailer cracked and broke in little pieces due to the extreme cold weather here in Winnipeg Canada 🍁 but I’m super happy and very thankful to you sir for helping us fixing this issue. I have had watched few videos people trying to show how to do this job but you did it in a very simple and easy way for anyone to be able to do the job. There was a little issue with the wires I was trying to figuring out… I had all of the above colours shown in the videos except the red! I instead had these - brown,yellow,white,green and 2 blue ones. I connected all the ones as you’ve mentioned and I connected one of the blue to the trailer brake and the other replaced the red . Thank you Dustin.

A very good video. For the novice , always be sure to mention that you have removed the protective cover from the new 7 blade connector when attaching the wires, and that we are watching the wiring instructions while looking at the screw terminals inside the trailer connector itself. It is confusing as your drawing could easily be mistaken for the outside of the connector when connecting the wires. Im one of those who was confused myself and had to seek other diagrams to verify what you were explaining...Also mention that even though there is a standard color code, that many manufacturers often dont use standard code, and often will also use any wire color available to extend wires underneath the trailer to reach the trailer connector. Ive just bought my second used factory built trailer where the builder didnt follow the color codes . Thanks and great video....

I’ve got a Toyota Sienna mini van. I am having to swap green and yellow. I’m supposed to have reverse but don’t. Brakes work great. Saved me 7-14 days and who knows how much money. Thanks very much.

Lots of great advice-Thanks! The reverse circuit can be used for 2 other things- to power a WiFi camera on the back of the trailer (back up lights help these cameras a lot at night too) and to pwoer a back up warning device. (On a car you can use the back up light circuit to power the camera.)

Thanks for the very informative video Dustin, very helpful!

Thank you. I've been trying to wire my 7 plug for days now and after watching your video it only took me about 10 minutes and its done. Great video and it'll probably save some live. Please keep them coming.

Thanks Dustin, you did a great job of explaining trailer wiring in layman's terms. I did notice one thing about the way you described the signal going thru the brake circuit. What you said only applies to a non-proportional controller and just as a side note I have found that newer integrated brake controlers don't send any voltage at all if there is not a complete circuit present. So if you check the plug on the back of your truck for signal you may not get one at all which would lead you to think there was a blown fuse when there is actually nothing wrong.

Thanks man, this video helped me to got a disaster wiring on a trailer corrected within 45 minutes.

You Just helped me hooked up a camper for a big event very much appreciated!!

"When the sun goes down, I hope this makes you brighter. " lol love it! This guy is an exemplar of what happens when experience meets intelligence! Thank you, sir!

Thanks for the video. Thanks for the great tip on grounding. Redundancy is always a good thing when it comes to safety.

Thank you for making an easy to understand video, outstanding job!👍🇺🇸

Thank you for a better understanding of how the connections work!

Great presentation and now I have the first "phase" on how to wire my trailer. This clip is forever saved. Thanks

Nice clear video, I bought a set of temporary/emergency lights and had to replace the 7 Pin plug as it just didnt fit in the socket all the way, not sure why. It was wired the exact opposite of your diagram, the ground was on the right side of the plug and so on. It was a little confusing until I watched your video and figured it was all opposite wired.

This is still the best video for wiring. Thanks

your a good teacher. short and to the point and easy to remember.

I followed your directions and everything work perfectly thank you so much for making this video😅

I know this post has been up for awhile but I really appreciate your post and thank you for the information!!!😄

Excellent explanation. 1000%. Amigo. Now I new come over and do my in the middle of the road. Just kidding. Bless you and your family.

Great idea to have a ground to each individual light, that insures that no more lights going out individually because of a bad ground. Awesome.

Damn. I've spent the better part of the day trying to wrap my head around the logic of trailer wiring (like, why is there a 4 pole and a seven pole option), and you cleared the whole thing up in a 12 minute video. Automatic subscribe.

U ARE SUCH A GREAT TEACHER MY FRIEND ...!!! I Love Ur video mainly because I have a broken memory ... but when U related the colors with the position in the connector ,,, Wow .!! That was an enlightening moment for mi ..! Thank U So Much Dusting ..!

Thank you so much. I am in the process of re wiring my grand daughters horse trailer. I knew that i could do it but could not understand how the running lights on top were connected.. now i do. Just shows even a granny can do anything. Thanks again

Dustin, I am new to all of this and your video explained every question I had concisely and simply. Thank you for taking the time to do this for hacks like me!

Best trailer 101, I've seen, Thank you

You helped me so much. Thank you for taking the time to make this.

Thank you for the help You make sense out of it where others don’t

Thank you for posting this - we’re a body shop and we’re fixing a 2021 Silverado that got hit in the back and everything got ripped off the trailer connector- thank you

It doesn't hurt that usually the plug it self has what color goes where, but thanks for your in depth explanation. : - )

One thing to add is that color code is for non-rv trailers. The RV industry, and the majority of aftermarket trailer wiring products, uses a different color code. The only three wires that are the same are the ground (white), electric brakes (blue), and 12V charging (black, not red) Having two different color codes is extremely confusing if one does not realize there are two codes. Another thing that is super confusing is forgetting which way one is looking at either the vehicle or trailer plug when wiring it. Are you facing the front of the vehicle or the back of the trailer? Facing the rear makes your diagram backwards. Keep making these helpful videos. 👍👍

Great job you conveyed it very well. Thank you very much. The other RU-vidrs want a be. You explained it very simple to work even I could understand, Are my granddaughter

Thanks for the video. Easy diagram and helps me figure how to wire break/turn lights on my hitch bike rack. Tks

Thank you fir explaining the purple wire. I was flimflammed by where the purple wire goes

Thank you! it helped me a lot, i have a f350 2006 that doesn't work, and my Rv needs those lights working, i can't find out what's wrong with it, but your video helped me to understand the wiring better.

Thanks, rewiring a plug today and I'm defiantly using your info to fix my car trailer wiring!

You are freaking awesome, thank you for taking the time to make your videos!!!

Thank you ! Much appreciated... just what I needed

Thank you! Very easy to understand and not intima dating.

Thanks Man I appreciate it I'm wearing my new car hauler for reverse lights , like you said it's hard to see at night at the tracks

Such a great job Dustin. Man you nailed it.. Now I have a request for you to do a video, Without adding any extra wires either. Change a 4 wire connector on a trailer to a 7 pin wire trailer and everything still works fine. The only thing I can remember when seeing it done was he ended up placing the two brown wires on one screw terminal. Everything else was almost if not exactly as you do a regular 7 pin hookup to a pig tail. Now how about a great diagram and video as the 7 pin hookup was for this 4 wire to 7 wire and pin hookup, and still have everything working. Thanks you are the Man!!!!!!!!!!! Doug

Thanks for the video, makes understanding 7 pin simple easy!

Literally the only video that made sense thanks man!

Good info, especially on backup wire for hydraulic brake application. Thank you!

great job, both in presentation and content.

I feel like you're my god right now lol I've struggled so much with this.. thank you thank you thank you 🙏🙏

Great video! You obviously know what you are talking about.

Bravo Senor, I fixed my problem with your help.

I am rewiring my husband's '99 F350 dump truck to accept a 4-7 prong plug as his Christmas gift. Your awesome video helped answer a couple of questions I had. Someone in the truck's past did a very sloppy job wiring in a 6 pin. They even connected the wires in a way I can't believe ever worked. I've lost count of all the trailers I've wired and have never seen one done so badly. I even wired a 1942 Willys from front to back entirely but this is my first time working on my husband's "Dumpy". Installing his new brake lights was easy but I've been putting off the trailer plug. Send a lady some good luck vibes. Thanks! :)

Great video! Straight to the point and it worked on my 2011 Ford F-150

Thank you, this is a very good/ informative video for trailer wiring.

Excellent explanation! Thank you!!

Thank you for this! I bought an old pop up camper and the harness was working for the most part but something was off. When I opened it I had a loose wire and 2 empty spaces for it to go. I didn't know which space to put it till I watched your video. I don't know if it's an aftermarket thing, but I have 2 large gauge wires and 4 smaller ones, if I put it in the order that you have it, the large black wire is my positive and the large white wire, which was loose, is my negative. So my negative was floating around and periodically bumping into my positive and that was causing my problems. Thanks again for the help!

Perfect. Calmed and just great explanation

Best video and explanation. I’ve seen appreciate it brother.

Excellent, Consise and Detailed explanation.

Great illustrations and easy to see. Thanks!

Thank you, you set me straight. I connected my brown to the red terminal.

Appreciate the knowledge and the crash course, Thankyou.

Awesome video man, I’ve dealt with some dandies already. Like all black wires and trying to decipher plugs and yea. Awesome video.

Thanks for explaining this wiring diagram. My right turn signal isn't working. My next job. Just finished the brakes!

Excellent description on how it works thank you..

Thank you. A great, informative video