How to Fix Trailer Lights that Keep Blowing Fuses in Your Truck

[@justyardsigns]

Great problem solver!!! Realtime- straight to the point. Your video makes other KZbinrs mad.

[@FarmDad]

Haha, thanks so much, bud!

[@massachusettsprepper]

Excellent way to troubleshoot the fuse issue for sure. And don't you just love it when everyone wants to watch you while you're trying to shoot a video LOL. Thanks for sharing brother.

[@FarmDad]

I appreciate you!

[@massachusettsprepper]

@@FarmDad and you as well my friend.

[@POPPOP-qi5ki]

Thanks so much been watching a lot of youtubers try to explain it but ran across your channel and 20 minutes later my problem was solved Thanks again Farm Dad

[@FarmDad]

Awesome! Glad mine got it done for you!

[@jayjoans186]

From the chart you posted @2:03, you checked continuity in the trailer plug from the Tail/Running Lights to the Trailer Brakes. You didn't put the probe into the Ground, which would have been the slot at 5 o'clock. You did 1 o'clock and 7 o'clock, right? @3:05 Clearly you found the problem, but that exercise didn't tell you what you thought it did. I'm in the middle of trying to find my own trailer issues, so I'm following your instructions closely. Thanks for the video. When I check mine, I get continuity from the running lights to the ground AND from the running lights to the trailer brakes.

[@FarmDad]

I think you are correct, it looks like I probed the wrong spot when I did it on camera. I bet I did it right though when i was testing before I started filming.

[@jayjoans186]

@@FarmDad thanks, strangely there's a circuit from running lights to trailer brakes though, any idea why that is? Then when you found the bad wire and fixed it, that circuit was broken. I have the same thing you did, and I'm hoping there's a hint there for where I should be looking. The problem is in my travel trailer, so all the wires are hidden away, I can't see them like you can on your flatbed..

[@oregonlums]

I have similar issues with truck fuse blowing, continuity between ground to tail light pins and trailer brake to ground pins in trailer plug. Looking for a break in the tail light wires is a bear! Here’s what’s got me scratching my head: I used some spare wires to connect tail light pin to positive battery terminal and a wire from ground pin to negative battery terminal and it all worked. So it appears trailer wiring is fine but truck is the problem? Any ideas?

[@geodavi123]

@@oregonlums try the continuity test with the multimeter on the vehicle side of the plug, that will tell you if its the vehicle and not the trailer

[@alistairparker6650]

Thanks for the continuity suggestion- help me determine whether my truck was the issue or the camper.

[@FarmDad]

Glad it helped!

[@osuccme7562]

This was exactly what I needed. Thanks for taking time to upload this video, it helped me fix my trailer.

[@FarmDad]

Glad to hear it helped you get it fixed!

[@kevglaz]

@@FarmDad Correct me if I'm wrong, but your method for finding a short doesn't work for clearance lights? Specifically clearance lights that only have one wire going to them. This did help me to find a short on my tail lights so for that I thank you.

[@cayleemontgomery4322]

Awesome, this is exactly what I need. My flatbed running lights don't work when hooked up to any of my three trucks. Since it acts the same on all three trucks, I know the trailer is bad. This will help me troubleshoot the wires

[@FarmDad]

Sounds like you'll have it figured out in no time.

[@BeldenTopo]

Excellent explanation, this information will help me alot.

[@FarmDad]

@@BeldenTopo glad to hear it!

[@billsnape920]

Thanks a lot, you got me heading in the right direction. wish me luck wiring goes through the tube frame.

[@johncane4127]

What a outstanding video brother this will help a lot if people

[@FarmDad]

Glad to hear it!

[@FrenchUsaEUC]

Great job on video, you got me going the right direction to fix my tail light!

[@FarmDad]

Glad to hear it!

[@mrbkg865]

Great explanation, thank you for all the information

[@FarmDad]

Most welcome!

[@mattdeuel4805]

Great video, explained very well

[@FarmDad]

Appreciate you

[@powerram92]

I have continuity with all my pins on my trailer 7 pin connector. Does that mean I have shorts in all wires?? Also when I test for continuity with my lights off on my truck plug there is continuity does that mean I have a short on my truck side also??

[@johnkessock9784]

that's because you could measure continuity through your bulbs. need to remove all your bulbs, for his test to work, maybe not with LED bulbs ( light emitting diode) . they will only show continuity one way.

[@billshauling4507]

Thank you so much buddy! This helped me fix my new Maxx-D roll off dumpster trailer. One of the side marker lights had unplugged and they had a light connector in the middle of the frame where no lights are. So it kept touching metal and shorting out I believe.

[@FarmDad]

Good find! 👍

[@OldskoolArtCustoms]

I've been chasing a blown fuse cause in my right turn/brake circuit. Been an issue since trailer was new. Thought it was mybtruck, but other trailers don't blow fuses. No schafing found yet.🤔

[@carringtonlovejr2325]

Great video brother. ImA fix my semi truck with is tonight

[@FarmDad]

Sweet. Hope it goes smoothly.

[@randybarrosse2879]

Dude awesome video! Helped me big time! 👍🏽

[@FarmDad]

Glad it helped!

[@carringtonlovejr2325]

Thanks brother I’m done ✅. Found short

[@PaulWilliams0]

Helped a lot. Thanks brother!

[@FarmDad]

Most welcome!

[@PaulLadendorf]

Worked like a charm! Thanks!

[@FarmDad]

Awesome, glad to hear it!

[@Lawreober]

Thank you for your help! This is just what I needed.

[@FarmDad]

Glad to do it!

[@mikem2719]

You should always read continuity across the positive side of the light circuit and the ground , If you do not you have an open circuit and the light would not work. You have to disconnect the wiring to the light or remove all the bulbs and than test the positive wire to the ground and if you have continuity you have a short in that wire.

[@maximocortes1631]

Well done and a big help! Thanks!

[@FarmDad]

Glad to hear it!

[@billhenry7833]

Not sure why but you were checking tail/running lights to brake lights on the trailer continuity test and you were getting a beep, which you shouldn’t have. You must have had something more going on there.

[@FarmDad]

I haven't watched this video since I made it, but I can assure you that there wasn't anything else going on as I still have this trailer and it hasn't had any other problems since.

[@positivevibes1973]

Beautiful sharing...like 3👍👍👍stay connected

[@לאידועלאידוע-ש1ז]

Question. i have an 02 Dodge Ram 1500. My 4 pin flat connecter on vehicle for trailer works fine. EXCEPT THE RUNNING LIGHT. My 7 pin connector on vehicle for trailer works fine. EXCEPT THE RUNNING LIGHT. What do you recommend? Thanks.

[@FarmDad]

I'd start by checking fuses.

[@לאידועלאידוע-ש1ז]

@@FarmDad ok thank you. Both 4 and 7 pin connectors work fine according to LED tester, but i get nothing on LED test for running lights on either 4 or 7 pin connectors.

[@לאידועלאידוע-ש1ז]

@@FarmDad it was a fuse. thanks for replying friend. i thought truck running lights, and trailer running lights were same fuse. thats why i overlooked it. duh! lol

[@FarmDad]

@@לאידועלאידוע-ש1ז awesome, I love easy fixes.

[@rachelscats5251]

Great video thank you so much ❤❤❤❤

[@chrissmith-oq5nq]

@2:08 is that a general diagram for all round pin connections?

[@FarmDad]

Yes

[@bmbrooklyn]

Great tips!!!!

[@FarmDad]

Thanks so much!

[@kMani-sl4cz]

What about if the truck 7 pin doesn’t read 12v?

[@grantwisdom5273]

Thank you so much!

[@FarmDad]

Glad it helped!

[@alexisbutler8842]

What fuse was it

[@tarsisalvarado8539]

Great job bro

[@michiganhay7844]

Yeah thanks I got a trailer that does that usually in the middle of the night while we’re out delivering hay and I am many miles away from home

[@TheCanadianBubba]

Nice work dad !

[@soulfoodqueennet]

be safe always

[@deanhanchett379]

Awesome, thanks

[@FarmDad]

Welcome!

[@timothyfuller1682]

Shouldn’t you pull the bulb? Otherwise you would have continuity through the bulb.

[@BOHEMIANHUNTINGCLUB]

Nice job!

[@electric2102]

THANKS A LOT

[@FarmDad]

Welcome

[@tarsisalvarado8539]

Purchased a landscape trailer from Carson trailers and got my hitch mount and Wiring installation from uhaul . Carson Trailer keeps blaming uhaul saying its their wiring and uhaul is saying it’s the trailer. So uhaul connected two other trailers to my car and the all the lights work just fine sooo it is the trailer it I can get those idiots to realize that and the lights like the trailer and axels have warranty but they won’t help me. I will try this tomorrow morning thank you.

[@FarmDad]

What a headache!

[@Sigean11130]

Many trailers have earth connections directly to the individual components in the light cluster, all coming back to the earth pin in the plug. The multimeter will supply a current through the component (brake light or whatever) back to earth. There will be a beep on all circuits under these circumstances, and the problem will not be found...

[@alejandroleon8149]

Awesome 😎🙏🏻👊

[@FarmDad]

Thanks

[@GamesandMorexd]

Big Like 👍🏻🤩from new friends 🌺☀️🌸🌺🌸🌸🌺🌸🌺

[@BeldenTopo]

❤❤❤

[@vicpetrishak7705]

First of all get rid of those Scotchloc connectors . Use wiring lubricant even penetrating oil will work in the light cord socket .

[@billygage6899]

Get rid of those crimp locks too

[@johnnymucholoveo604]

😇💪🏽😇

[@FarmDad]

😁

[@Oldtech51]

Very poor wiring job on the trailer. Wire should never be run through a hole like that. Must have a grommet in the hole.

[@FarmDad]

True. Cheap trailer

[@tredogzs]

tape! .... tape! .... are u kididng me!