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This is how all youtube videos should be. You can actually here him, understand exactly what he is saying and he is completely clear and concise. Made my understanding of how trailer wiring actually works. Excellent Job dude!!!

This is the best trailer wiring video I have found yet hands down

Never would've dreamed my little utility trailer would require 'front section' and 'rear section' grounding to get everything working properly....but you were right - it did! Thank you for the tip...I never would have come up with that on my own.

Why is it that someone like you can explain this and it's, "Oh, ok. I see", when the majority of videos are confusing? Subscribed.

I wish I saw this earlier. I have wasted an entire day trying to make new trailer lights work. Been to Harbor Freight and Cabela's buying and returning "faulty" lights, ripped out and replaced all of the wiring, bought a tester to verify the wiring on the truck was good, and on and on......the problem was I painted the trailer and as a result, reduced its electrical conductiveness. I did as you said and moved the ground wire to the same piece of metal that the lights were on and boom, everything works. Thank you thank you thank you! I appreciate your thorough style. Keep putting the slop low, where us hogs can get to it!

I learned by far more about properly wiring my camper properly and troubleshooting the existing wiring than I have from all other videos combined! Thanks for this great video!

This was exactly the video I needed. Was having a difficult time figuring out the side marker wiring. You showed just what I was looking for. Thank you

Retired electrician here. Many good points and ideas by Mr. Knetter. Nothing wrong with overkill-less time troubleshooting means more time you got a hook in the water!

I have NEVER had a trailer that provided a good chassis ground. During trouble-shooting of trailer light issues I have found that the problem is usually caused by a bad ground. It is so easy to run a wire from the white wire on the harness to each light. This will give each light fixture a good ground and give you MUCH more reliable trailer lights.

That was a nice video, great explanation and informative for those with no clue how to fix their trailer lights and great for doing a small utility trailer but in my opinion, not preferable for boat trailers. I have 30+ years as a marine electronics technician and there are just a couple of things I would suggest with regards to boat trailers. First, always use marine grade wire for a boat trailer. Marine grade wire is tinned to prevent corrosion and comes with a thicker layer of insulation to resist chafing. Never use those cheap trailer wiring kits on a boat trailer as the wire is common automotive grade wire and is not designed to be submerged in water. The only reason the manufacturers use it is it’s cheap and will get the trailer through it warranty period. Second, the chassis common ground is a single point failure and a PITA to troubleshoot, also an automotive mainstay and not conducive to being underwater. When I rewire my boat trailers, I run independent conductors for each light, terminated in a waterproof junction box on the tongue of the trailer. That way if there ever is a problem you can check continuity to each light independently. If a wire needs replacement simply cut it, attach a new wire to the old and pull it through to it’s termination point. The first trailer I did this way was over 25 years ago and has never had a failure except for burned out bulbs.

Perfect example and explanation step by step. Thank you for making this video! My blue heeler got ahold of the wires underneath my trailer and decided it was a game to rip everything out… now I’m confident enough to tackle this job myself!

Terrific work Dave! You show several great tips get the results I'm after: trailer wiring that will last for years, and not be a nuisance. Much appreciated sir!

Absolutely perfect explanation. This is one of the VERY FEW times I've been able to watch a video once and know what to do. Got an old work trailer from a buddy with all the wiring toast and had no idea where to begin until I came across your video. Thank you, sir. Subscribed.

Excellent video. Could not figure out what was wrong with my new trailer light set and the explanation of how they work on this video gave me the clues I needed. Lights work now. Thank you thank you thank you!

I actually just bought a trailer with a row boat this year. First one ever so clueless with this stuff. It needs wiring and lights all replaced and this video is exactly what I needed easy to understand and see what needs to be done.

Excellent video. You're very clear on what going on and you cleared up my suspicions of what was going on with my troubleshooting. Thank You!

I think you're doing it the right way, 100%. The old wiring on my used trailer was daisy chaining the brake lights and marker lights using the brown wire first, then continuing the flow of electricity through the GROUND wire to the other light!!! In my opinion, it's CRUCIAL to make sure that every light (or electric component) has it's OWN ground, somewhere to the frame of the trailer. A ground is a GROUND. It's not a method to power the next light!!! USE SOME SORT OF A 3 WAY CONNECTOR TO USE A SINGLE WIRE TO POWER MULTIPLE COMPONENTS!!!!!! Awesome video! Just wanted to clarify what you did and how important it is to do it like this!!!!

Nice job Dave. Trailer lights are my number two all time PITA necessary jobs, right behind fiberglass insulation.

Dave Great help - I was ready to blow up! Didn’t know about the grounding requirements- did what you said and everything worked Thanks

Thank you so much for taking the time, and use of your talent, and putting it in a video. Your suggestions and directions worked so well. I was so pleased that the signal turns, brake lights and flashers worked!!! Good job!!! Your time and sffort was not wasted

You never know you would need a video like this until you need a video like this thank you so much. Those bolt connections are my problem.

You're a natural instructor and I appreciate you taking the time to make such a simple to understand how-to video. I've got troubles with attention and learning, but despite this, you've laid out everything perfectly and in a way I could comprehend. Many, many thanks!

Great video Dave! Very helpful. And the Hodag in the background was a bonus! I grew up in Rhinelander! Now I’m a Georgia Hodag! Thanks again!

Great video my ground wire broke so everything went out and your video was instrumental in showing me the difference between the continuity and connectivity of a trailer so I hooked the ground wire back up and everything works. Thanks very instructive and well-made video.

Excellent video. I looked though a lot, and this one really shows the steps, and provides an excellent diagram. Super grateful. And I wired my trailer perfectly after this! Thank you!

I greatly appreciate this video & your time making it and how well & clear it is done. I'm stupid about electrical and timid about fooling with it but with boat trailers it's and ongoing maintenance you can't ignore. The video helped me understand continuity, especially the explanation about the white wire & completing the circuit. We are on Lake Palestine & we fish saltwater in Hackberry, LA which is so hard on everything. Thank you again. If you are ever in East Tx, holler and I'll put you up in one of my cabins.

I like the way the dog looks at at the trailer like he knows what your talking about!

Your video helped me to fix my ground problem in my trailer. Couldn’t figure it out without it! Much appreciated!!

Good series. I've begun using semi trailer lights that fit inside a rubber grommet that mounts to a cutout or metal enclosure. got tired of breaking these style taillights. my preference is also to run the wire for the running light all the way to the back and then back up to the side marker. less chance of losing the rear lights due to fewer connections. I even ran conduit front to back on mine so I have less chance of wires getting frayed/damaged. wanted that to be the last time I had to mess with this stuff.

just purchased new trailer lights. video explained everything in detail and i was able to get them set up. thank you sir!

Great instruction. I am replacing my trailer lights and wires on an old trailer. Your video is awesome and easy to understand.

Excellent video! Thanks for clearly explaining which colour wire controls which feature. This will really be helpful when I tackle my trailer lights this week!

Thank you for this wonderful video! I thought I knew enough about wiring. Oh how arrogant I was! Lol. Very nice, thorough, informative, to-the-point instructions. Great pacing! Never dragged. A+

Awesome,..👍🙏🤗👏👏thank you so much,..you see i am replacing the light on an old harbor freight utility trailer,...and othe videos didn't talked or show the small details they think we all know,...and those details are the most important part,...from the drilling of additional holes to how to crimp a ring cknecter....EXCELLENT VIDEO!!!

This video really deserves more likes! Very helpful information. Thanks for posting.

Excellent video playlist on trailer lights Sir! Thank you very much from Georgia.

Great video I was in the dark when it came to wiring trailer mostly how a ground works thank you.

Superb work on these videos Dave ! Excellent !

Thanks so much for this very informative video..I rewired all my boat trailer wires with new ones.The jumper wire you suggested for the ground worked great..The new lights wouldn't work until I jumped wire the tongue to the frame...

Great video. I just bought a smoker mounted on a trailer and this video helped me out a lot.

Bro, your a grear teacher. Make it seem easy. Thanks for your help. Keep the vids coming!

Absolutely, this is a great video. Thank you so much!

Great how-to video! Best on the net.

Great video, very well explained. Thanks!

Excellent explanation! Thank you so much.

Excellent video. Thank you !

Super helpful, great detail. Others I started to watch (but didn't finish) kinda jumped over the "boring" parts, which wasn't really helpful. This video didn't skip anything. 👍👍 I've got a sailboat trailer I've got to do, and didn't know the first thing about it before this video. Now, at least I know the _first_ thing!

I am getting ready to do my first trailer rewire your video has made me more confident that i can do it and properly thank you!!!

Marvellous sir. Thank you so much. Excellent series. #11 brought it all together.👍🏻🍀

Once again your videos are a life saver!! Thanks KPO.

This vide series was super educational and helpful. Great job. Thanks1!

Nice job explaining this man. Wiring my trailer this weekend.

Wow what a great instructional video! Thank you for making this!

Wow thank you for making this video….its much appreciated brother !

Beautiful job!! Thank you so much Great teacher 👏 👍

Great job on the video! You explained everything so it was easy to understand. Thank you

was struggle bussing without lights bolted into trailer. thank you🤭 so simple.

Thanks for posting this video. Your explanation and how to do help me solve my issue with my trailer lights.

Thank you so much for this....Hugely helpful!

This was was best explained wiring instructions of all. Some how the other videos left a few details confusing, not this one

OUTSTANDING, and very informative video! Easy to follow.

So helpful! Thanks for putting this together!

Had a grounding problem with my Harbor Freight foldup trailer. Your vid fixed it thanks

❤❤❤❤ THANK YOU… MY GROUND WASN’T TOUCHING THE TRAILER

Thank you. Great detail. 👍

Great Content and Instruction; Very Thorough‼️😎👍🏾

I learned a lot from that. I need to put new wires on double axle pressure washer trailer. The trailer should have brakes. I could wire it just to have the light setup but if I'm going to do it I'd rather do it right and have the brake setup as well. I'm look at your other videos and see if you have one that includes trailer brakes. Thank you!

Thanks to you I was able to troubleshoot my trailer lights.

Very informant video . Thanks for posting . Got two to rewire and your video will be a big help today .

Great video!

Great video. Thanks

Great video for beginners thanks

I love the Hodag in the background!

Such a helpful video, thank you!

Thank you. This helped immensely!

Great video my friend. Thank you Sir!

great video. Thanks!!!!

Saved me some money thanks to your video! Many thanks my friend!

Just awesome information 👌 very good explanation of how everything works thank you God bless you

Thank you very much for this video with a super clear explanation! I’m driving from Florida to Wisconsin with my trailer lights going on / off and getting faded depending on the surface of the road I’m driving on. I could not understand why the problem even after moving the ground wire to another close section on my trailer. Well my trailer came 3 and a half years ago in many pieces, like a puzzle and I think that the problem!! I guess I’ll have to run the left and right ground to the from of the trailer, close to the side markers. I hope I’m right??

working on Manac"s Great Danes Utility's and those. Got to say , listen to this man 👍👍

This is so far the best explanation

Just the vid I needed. Thanks!

Very helpful !!

Great explanation thank you

My harness has a yellow green brown and red wire it says the red is for rear marking red lights if trailer over 80" inches wide plus the white ground wire. I ran all the wires except white to rear of trailer used white for ground on the front of the tongue. For my marking lights I ran a separate wire from each marking light and spliced into the brown at the back yellow to left green to right. Nothing works shouldn't that setup work wired that way. I'm going to check my grounds today. Also it an old tilt trailer I did grind the paint away at all connections. Is this wrong or should it work wired this way

No one can show it better Thank You

Loved you on the Red Green show

Great video on trailer lights! Best I've encountered! I have one question though. What size/style self starting screws die you use and do you have to drill a pilot hole for them? Thanks!

So im trying to redo my wiring for my pop up camper. Can i run a ground wire from all lights to the trailer and then run my appropriate wires to the lights?

Nice vid. Thanks bro

Great tip works for me

question I put a new wire and tail light set up on my lil trailer cant get to work the tail lights ...blinkers and turn work ....but not the tail light what should I do and thanks

We are Having trouble even drilling into the metal of the trailer … so many broken bits, center punches (even ones made for steel) and headaches. Any advice? Should we skip the drilling, tapping the hole etc and try those screws instead?!

Spot on. thank you

Grear video! Saved me time and money.

Well done & well explained. Love the Hodag!

Great video! I'm rewiring my trailer and my side marker lights have rivets holding them on and I'm replacing all of them. Do you think aluminum rivets would work? Or should they be stainless?

Superb work on these videos. I keep blowing my truck running light fuse when my boat trailer is connected. I checked the vehicle side and all look normal, I get 12.8VDCc out of the brown all looks good. On the trailer side I have continuity from the brown on the RHS to the WHT but no continuity on the LHS brown to WHT. I suspect that I have a short between the brown and frame/white on the RHS but the LHS is fine. What are thoughts?