Trailer wiring diagram 7 pin

[@sightseer1000]

Thanks!

[@joetheboatguy5394]

I appreciate it :)

[@humbertogonzalez3690]

Thanks

[@thomasnix31]

This diagram really cleared up the wiring layout for me. It is just as, the used trailer I purchased is wired. Except the manufacturer used all the wrong color wires and the damaged lights no longer work. Im having to rewire , replace the trailer connector, add and ID Bar on back , and replace most of the running and marker lights. Thanks for posting this.

[@Kenmarshallintereststx]

There are some insanely crummy videos on the topic on you tube so you need to make videos or do tutorials for people making videos on how to do things because you dont waste time and are extremely well put together. Blessings from Texas and thank you it also helps that you're set up is the same as Ford super duty

[@robertogutierrez3653]

THANK YOU !!!! for being fast , simple, and understandable !!

[@mattcostabile1]

Thank you for taking the time to create this video - this helped me troubleshoot a short that I had in my trailer.

[@cadetcadet1814]

Wonderful video! Was looking for something for our horse trailer. Precise, to the point, and easily understood.

[@artholliday7237]

Sir thank you for your video. It was very informative and concise and it didn’t waste a bunch of time and it told me exactly what I need to know. Thank you very much.

[@joethurman2712]

Incredible content. Please make more in this format!

[@joetheboatguy5394]

Hi Joe Thurman, Thanks for the nice comment 👍

[@bvbjb]

The absolute best on the platform. Thank you. :)

[@poprugi]

Best explanation on KZbin!!!!!! Good job!!!!!!!

[@joetheboatguy5394]

Thank you 🙂

[@agnellone]

Thanks a lot dude, very helpful. Greetings from Sardinia, Italy

[@Kenmarshallintereststx]

Incredible best trailer wiring video hands down Google owns

[@x1tekja]

Thank you this was very helpful very concise

[@endofz33world]

Thank you for this simple explanation - sent from lying under my trailer currently lol

[@donovandodd7959]

great job- straight to the point - no extra bologna - thanks

[@justinminch52]

This helped a ton, thanks for the best to understand explanation

[@PierreMichael2020]

Excellent video, very helpful. thank you.

[@isleta521a]

Brief, quick and concise. Thank you.

[@juniorgonzalez2448]

Needed this badly thank you sir God Bless you.

[@youcanthide004]

Perfect, very comprehensive, thanks bro!

[@dilberttf]

thank you. spot on, simple, great "radio voice" :)

[@StephenBradley2317]

This saved my bacon thanks.

[@ecook634]

Can I add additional running lights to the running light wire? I won't to add colored side lights on the trailer. What kind of 12 volt item could I use? Hope these aren't dumb questions. Great video. Very clear. Thanks

[@joetheboatguy5394]

Hi ecook, thanks for watching and nice comment. They are no dumb questions; all questions are valid here 😊. You can connect any 12V rated lights. Even led light strips if you want. BUT if you go with led lights make sure all your lights are led in the circuit. Not good to mix and match led and halogen lights. All your lights should be connected in parallel. Also make sure you respect the laws of color lights in your part of town (if they are any LOL). PS: one thing to considered, when connecting light in parallel you will need more amps. Make sure you have the right fuse for your running lights (especially for halogen). Let me know if this helps 😊

[@BeeHiverson]

Thanks for the video joe!

[@sparkgapgarage5252]

Thank you for this video!

[@atubeviewer4942]

Good video, would have been a great video if you also showed the run away brake wiring too.

[@joetheboatguy5394]

Hi Atubeviewer, Thanks for watching. That is a great idea, I didn't think of that. For now here you go. Splice the blue wire from the breakaway switch to the blue trailer brake wire from the breakaway battery box. Splice the black wire from the breakaway switch into the Trailer 7-way connector brake circuit. The color of the brake circuit may vary trailer to trailer. Splice the red battery positive wire from the breakaway battery box to the Trailer 7-way connector 12V+ auxiliary power circuit. The color of the 12V+ auxiliary power circuit may vary from trailer to trailer. Attach the white wire from the breakaway battery box to the trailer chassis using a ring terminal or Splice with white trailer wire. hope this helps

[@haroldpruett7854]

best how to video i’ve seen

[@projectracingtheory4125]

Nice thanks for the info!!🏁👍🏼

[@JuanGomez-iy5qh]

Thanks for video. Diagram makes it easy

[@sightseer1000]

When troubleshooting the pig tale, how many volts the blue wire should read? Great video

[@joetheboatguy5394]

Hi sightseer, thanks for watching. The amount of power coming out of the brake controller depends on the adjustment of the gain on the controller. To test the voltage at the highest gain setting, you will want to sever the Blue wire a few inches from the back of the controller. Then, you will want to test the voltage coming out of brake controller at maximum gain setting. You should get around the same voltage as the Black wire, slightly less. The amount of voltage at the trailer connector will also vary depending on the gain setting of the controller. You can test to make sure you are getting signal at the trailer connector by using a circuit tester to test the Blue wire. If you are getting voltage and signal at the rear of the controller and the trailer connector, the next step would be to test the trailer brake magnets

[@lloydbanks5840]

Good job of showing video

[@crasher88]

very simple video two questions for you: do the wires going to the brake magnets should be be in series with one another or parallel? Can you put that diagram up in an easy to print format?

[@joetheboatguy5394]

Hi crasher88, thanks for watching. For the brakes they are connected in parallel. For the image try to do a print screen and print it. KZbin won’t let me paste an image in the messages. I hope this helps 👍

[@jkwo2007]

Very useful. Thanks.

[@Letmesolothis]

thank you it did i will be using this to wire my new cargo trailer that has no wiring in it at all.

[@joetheboatguy5394]

Thanks for watching, good luck with your project 👍, don’t be shy if you have any question, I will try to help.

[@zubrismusic]

👏👏👏 Thanks for the info

[@77dylanm]

You’re the best. I will L & S

[@huanqingwu7281]

Why do the L/R Turn and Stop Lights use the same wire? How do they work?

[@joetheboatguy5394]

Hi huanqingwu, thank you for watching, When you press on your breaks, both the green and yellow wire will send a constant 12 V at the lights, that will mean that your brakes lights will be on. When your right flasher on your vehicle is on, your green wire will receive a on and off 12 V so it will make your light flash Same goes for the left side with the yellow wire. Now, if you have your brakes on and your right flasher on at the same time. Your green wire will receive on and off 12 V, and your yellow will have a constant 12 V. So the right side will flash and the other side will be constant On. Let me know if this helps 👍

[@FlatOutFE]

Does a ground wire have to go to every light component? Can you just pig tail it to the frame?

[@joetheboatguy5394]

Hi FlatOutFE, thanks for watching, You can connected the ground to the trailer frame. Of course your frame of your trailer need to be conductive. Lots of people will say it’s not the right way to do it, but everybody does it, including me 😉 hope this helps 👍

[@jbarbatano]

Very helpful, thank you!

[@dandevos3816]

I wish there wasn't so many different wiring color standards for the 7 Pin trailer hookups. Red, brown, green, yellow all mixed up based on standard. Then some use red or black for Aux.

[@peanuthead5730]

Awesome video

[@garthtimmins2852]

The red 12 volt wire is usually used for the breakaway system, right?

[@joetheboatguy5394]

Hi garthtimmins, thanks for watching. It can be used to what ever needs 12v, including breakaway system. Hope this helps 👍

[@chrishawley3087]

Great video, all my wires are wired the same as your video but when my running lights are on and I plug in my trailer in to truck the taillights on truck get brighter. Any ideas?

[@joetheboatguy5394]

Hi chrishawley, thanks for watching, first thing I would do is on the trailer, make sure the connector is clean and free of corrosion. Then you will need to make sure that the main trailer connector ground and the grounds for the all the lights are attached to clean and corrosion free bare metal surfaces. Corrosion will add resistance that can cause voltage change. If they are clean and all wire are fine. Then I would suspect your converter box that can be going bad. Let me know we will figure it out. 👍

[@sdexcalibur]

Can I ask a question, when the brakes are pressed the yellow lights turn on not the red light, A professional trailer repair shop wired up the new 7 pin about 3 months ago.I never noticed it before, do you think something happened or it was wired wrong?

[@joetheboatguy5394]

Hi sdexcalibur, thanks for watching. If a professional guy did this work you should bring it back to him, they should be a warranty of the work done. When you say yellow lights are you talking about marker lights? Let me know 👍

[@Guerrero1187]

Can SOMEONE PLEASE tell me why in the world are equipment trailers and RV wired differently and use the same 7 way plug??I never understood this!

[@joetheboatguy5394]

Hi Guerrero, thanks for watching, The only difference between 7-Way Utility and 7-Way RV is the color of the wires. The pin outs are the exact same so either would work just fine with the other. For RV it’s usually Green-Tail & Running Lights Black-12V Power Yellow-Reverse Lights Brown-Right Turn & Stop Red-Left Turn & Stop Blue-Brake Controller Output White-Ground

[@jonesey1981]

Does the aux 12v need to be grounded too?

[@joetheboatguy5394]

Hi jonesey, thanks for watching. Your 12v aux is for whatever accessory you want to connect 12v to. The accessory that you connect your 12v to, will have a ground to be connected. Hope this helps 👍

[@gregridesbikes7363]

What do you with the wire you don’t need

[@joetheboatguy5394]

hi gregridesbikes, thanks for watching. they are many ways to cover unused wires. You can use the most basic way with electric tape. You can also use shrink tubes, self-fusing silicone tape or Liquid electric tape. I hope this helps :)

[@TaylorGalarneau]

Why would my trailer running lights stay on while the truck is off an parked?

[@joetheboatguy5394]

Hi gala83filmstaylorg7, thanks for watching. One reason I can think of why you’re running light stay on is that your auxiliary 12v wire might be connected to your running lights. Or both running light wire and 12v aux wire seen to be connected to running light. Check that out and let us know 👍

[@TaylorGalarneau]

​@joetheboatguy5394 so you were right the top two pins where wired backwards giving my running lights constant power...I switched them but now my running lights only work with my truck lights turned on instead of auto? Is that normal? It's a 2015 chevy silverado

[@joetheboatguy5394]

Ok we got one problem resolved 👍 Now for the running lights working on the ON position but not on Auto. Are you on parking when you’re testing? Maybe your auto only activate on Drive position. Try that.

[@l8tapex]

GMC 7 pen... red left turn , brown right turn , blue brake , yellow aux, black run, white negative.

[@draganku]

I just install tow bar ,connected the el...used this box tab7a But have some issue ..missing stop light. Maybe the trailer have some lose wire or ..?

[@joetheboatguy5394]

Hi draganku. Thanks for watching. I suspect that your flasher lights are not working either. You would have to check your yellow and green cables. Make sure they are well-connected.

[@drivebyquipper]

Vehicle wiring diagram?

[@joetheboatguy5394]

Hi drivebyquipper, thanks for watching, for the vehicle side it can differ very much depending on the model of the vehicle. Some vehicles actually even require module installation. So it can get very tricky and some others are very simple installations .

[@vincentaguirre3959]

Hello I have a 06 equipment pro utility trailer, with a white black yellow brown and green wires not sure how to hook up especially e brakes

[@joetheboatguy5394]

Hello Vincent Aguirre, thanks for watching, usually white is ground for trailers, brown is lights, yellow is left and stop light and green is right and stop light. Your black wire is not usually on trailer wires. What you can do is fallow the wire and see if it goes to your brake. Usually brake is a blue wire unless previous owners change the wires.

[@kevindendy6888]

the only time a ground wire goes to each light is if it is LED,,the frame is otherwise the ground.

[@joetheboatguy5394]

Hi Kevindendy, thanks for watching, I use the frame as ground but not everyone likes doing that. Even on vehicles the frames are usually ground. 👍

[@michelbrodeur6055]

There never was a backup lamp wire in the 7 way it was meant to be used for auxiliary battery charging such as the 12 volt battery in your camper for the fridge and lights this way you didn't kill the tow vehicle battery. The trailer brake battery is on a separate circuit as it is dedicated for that area only. Back in the day trailers were never equipped with backup lamps as you don't see them on highway tractor trailers.

[@joetheboatguy5394]

Hi michelbroder, thanks for watching. Now a days, the 7 trailer pin has a wire for backup light and a wire for 12v aux. Unless your 7 pin is not standard. 👍

[@michelbrodeur6055]

@@joetheboatguy5394 The wiring diagrams I have from Bargman and Pollock show that the #4 terminal wire is for the trailer breakaway battery as it was dedicated for that purpose only and the #7 wire is for auxiliary circuit . I have yet to see a Stock, Flat Deck, Goose Neck, Fifth Wheel , Enclosed Utility or Camper Trailer with backup lamps unless they were installed aftermarket. Also do you see backup lamps on an 18 wheeler trailer as they don't exist as I have that 7 Way diagram also.

[@joetheboatguy5394]

Hi michelbroder, i don't make the law but there's a law out there that says: If your trailer exceed 750 kg in weight. The law states that ANY trailer including caravans that exceed 750 kg need to have a fully functioning trailer reverse light. This is specified in Section 6.4 of regulation 48 approval of vehicles with regard to the installation of lighting and light signalling devices.

[@michelbrodeur6055]

@@joetheboatguy5394 Where do you live as I have checked every Province and Territory in Canada and also I asked a Motor Carrier Enforcement Officer and according to him there is no requirement for backup lamps anywhere in Canada. When you talk about trailers above 750 kg. you must be in Canada or elsewhere where the metric system is in use.

[@joetheboatguy5394]

@michelbroder6055. I found this on the web for Canada. « Many times, drivers think that just because their taillights might be visible over a low-profile trailer, operating lights on the trailer are optional. Yet in all jurisdictions in Canada, if you are going to tow a trailer, it must have operating running, brake, signal, and (dependent on size), reverse lights.Jul 13, 2017 cc »

[@Mike-vu9xf]

What gauge wire?

[@joetheboatguy5394]

Hi Mike, thanks for watching. Don’t forget to subscribe 🙂. Trailer wire is usually 16 gauge. Now if your lights are led you could even go smaller size. I would stick to 16 gauge 👍

[@finkness8483]

Where is you battery box and break away? And all wiring associated with it?

[@joetheboatguy5394]

Hi finkness, Thanks for wathing, I see your looking for an RV system. Look here: m.media-amazon.com/images/I/61mRWGczS8L._AC_SX679_.jpg

[@blakerothermel5484]

Where do you connect the ground wire to each light? My reverse lights only have one wire.

[@joetheboatguy5394]

Hi Blake Rothermel, thanks for watching. If you only have one wire that would mean your ground wire should be the screw on the light and will be attached to your metal frame. Your trailer frame will be ground. Some lights are made that way

[@mawunyoking-khoqx7894]

best ever

[@keystonestacking6196]

A+++ video

[@patrickmckowen2999]

👍

[@carlschmiedeke151]

You need to redo this video and make your diagram bigger so people can read what's on the screen, but I do like the video, but if I could read it it would be better

[@joetheboatguy5394]

Hello carischmiedeke, thanks for watching and comment. Did you try watching it on a computer screen? I do agree might be small at iPhone or android phones 👍

[@Breezer56]

Not that I see it on paper, I think I will try this because it stops alot of the going from side to side!

[@SirTazTTV]

I did exactly what the diagram said and it still doesn’t work

[@joetheboatguy5394]

Hi sirtaz, thanks for watching. Have you tried another trailer to see if the problem is on your vehicule side or trailer side. There’s also plug-in leds to test your vehicule side. That would be the first step. Let me know. We’ll figure it out. 👍

[@davidmaj4259]

Youre a great content creator​@joetheboatguy5394

[@humbertogonzalez3690]

Hello everybody

[@businessgoose8605]

Where is the black wire lol?

[@joetheboatguy5394]

Hi businessgoose, thanks for watching Round 7-Pin Wiring Diagram º White Ground. • Brown Taillights. • Green Right turn / brakes. • Red Auxiliary power. • Yellow Left turn / brakes. • Black Reverse lights. • Blue Electric brakes. Sometimes they change the colors codes but light green or black usually reverse light, Hope this helps

[@businessgoose8605]

@joetheboatguy5394 thank you, I am in the process of re wiring a trailer and am new, the red so far for multiple trucks had been left turn signal, when I wired brown to brown and green to green, my right turn signal would flash both left and right lights. So going brown to green and green to brown fixed that....

[@businessgoose8605]

@joetheboatguy5394 so I'm very confused lol, the guy before me cut and spliced these cables up, I've been stripping ans reconnecting all day. Like 4 different grounds randomly placed...

[@businessgoose8605]

@joetheboatguy5394 also, my black cable gets 0 volts, but my blue is a constant 12-14v. And blue goes to my breaks 0_0

[@joetheboatguy5394]

Put your vehicular in reverse on and see if you get 12V on your black wire. Looks to me that the guy before you did a random job. Meaning not following the colors code. Might be complicated to figure out unless you have a multi-meter.

[@tonylarge5298]

what about the lic plate light?

[@joetheboatguy5394]

hi tonylarge5298, thanks for watching, License plate light is usually connected on the brown wire. so it's connected with tail and running lights