2018 - 2022 F250 - F550 VPWR - Trailer Lights Inoperable - Fuse 10 Blown in engine fuse box

[@craig1102711]

Great video. Here's the tip for these trucks - make sure the lights are off in your truck when you plug in the trailer lights. If you do that every time, you won't blow the fuse.

[@Imnotyourdoormat]

wiring is one thing that separates the men from....those that have the Patience of Jobe.

[@RJ_Cormac]

And good money for those good at it who don't take weeks complaining about a job. There are so many crying products marketed to people who don't want to think about it or get frustrated, and unfortunately that product is only going to fix the problem for a year before it falls apart or has corosion again. I usually install flat 4 pin connector with a Weather-Pack disconnect for future replacement. And the larger trailer connectors with a Metri-Pack hybrid disconnect under the frame for future replacement. Ford doesn't have the best design history in connectors, either not water tight or the terminals lost the spring pressure contact after 10 cycles. Always use good grease! I recommend DeoxIT, better than anything OEM!

[@brodyz8327]

Taking apart relays and finding corroded contact plates... Now thats satisfying.

[@hughbrackett343]

So thoughtful of them to put that box where you can barely get your hand to it.

[@RJ_Cormac]

Always something back there last ~10 years; battery, fuses box, air filter, brake fluid, they mount something necessary under the cowl to help the crash rating or weight distribution. Sucks but it's the future.

[@WattsGemini323]

I wish i could sit with engineers and just tell them make things TECH FRIENDLY!

[@RJ_Cormac]

@@WattsGemini323🤔😂 Typically they lie, agree with you, and blame the project development budget, everyone had to compromise. Sometimes you'll get a boring prick waste your time talking about the reasons why, or a long story about the benefits of their idea! 😐🙄🤯

[@techguy9023]

@@WattsGemini323engineers should have to spend time with mechanics. Programmers used to use what they wrote every day to find bugs. They called it eating your own dog food. Engineers should see what their designs do to real world repairs.

[@braddomangue185]

Bro, you just saved me soooo much time! thank you so much!

[@brodyz8327]

I have a 06 f150 with a 5.4 Triton. I've noticed that the wiring over time really starts to corrode and the plastic plugs start to become very brittle. I've broken countless plugs from simply disconnecting things from servicing my own truck. Luckily I've picked up soldering and welding plastic back together... Just by using the same tool. Some good learning on this channel. Thank you.

[@dawska]

Thanks so much, my fuse blew 2019 f250

[@DanDeKruyf]

Thanks for taking the time to make the video, Now I know exactly where the fuse is under the hood and will replace accordingly.

[@narrowexpress9096]

I appreciate the time u saved me with ur video mine was blown Thank you, New follower 👍👍

[@FordBossMe]

I appreciate that

[@gerardochavarria9098]

Life saver ! Thanks for saving me the time and hassle 🤝

[@gaviejames7404]

I wish you were in Arkansas I'd love for you to be my mechanic. Your honest as the day is long I look forward to seeing your videos. God Bless you and your family

[@7524667]

Bless you man! Bought a camper and had to drive it back across a few states in a rented truck…. You helped solve my problem! Thank you!

[@mikemeeks8190]

Thank You I could not find it I called the dealer they were no help. Mine blew cause the lights were on at night in the truck I unplugged the trailer to reposition another stuck truck and when plugging the trailer back in I saw the electricity blow the fuse for trailer running lights. So thank you for sharing

[@DaltonsLawnLandscape]

Would you happen to have a video about testing the trailer ground and/or the trailer maintenance you recommend? My maintenance quality has declined this year being at 5 trailers now and have already started dealing with the repercussions of it and I’m not really mechanically inclined

[@rampage2587]

We had two 2020 f350 work trucks blow the running light fuse when we hooked up the trailer with the headlights on.

[@rampage2587]

Fuse number 10

[@terryclement9811]

Interesting you say that Rich. My 21 SD has no running trailer lights and fuse 10 blown. My good camper was dark this weekend, shame on me for not checking, but it’s my crap utility trailer causing it. Thanks for the info buddy! Started to look at I think it was 44? A 40 amp. Didn’t understand that one.

[@nathanielminor2850]

If you have the auto headlights on it will blow the fuse every time. It was that way on my 2017 f250 it was fuse 99 in it.

[@FordBossMe]

I'll keep that in mind have not experienced that yet

[@PS-lm3tp]

Exact problem I had, thank you. Fuse 99

[@shawn4101]

Thanks for the help. Fuse 99 on my 2019 F250. Trailer break lights were working, but the other lights weren't. Replace the fuse - 30 amp Micro 2 fuse.

[@KevinJones-pj8kx]

Pick up some test plugs. They plug into the connector and have LED lights to allow you to verify all the circuits at a glance. They are not expensive and save time checking to see if anything works. I also test my trailer wiring integrity by plugging it in without having the ball touching the hitch. If they don't work your ground thru the connector is out. The inspect all the trailer wiring is a good idea because all kind of sand, dirt and rocks are kicked up and can hit any exposed wiring while going down the road. Road spray is also very aggressive to wiring and connections.

[@rymat1427]

My friend spent money for no trailer light...no one could figure out why. When to the hardware store, got fuses, did what you did and I worked. He was mad as hell.

[@trublue2319]

Thank you for all you're videos

[@gregorymotard9703]

Very helpful Thank you- Unfortunately my plow installer put all the plow components on top- going to be fun getting to it-

[@davidkennedy7199]

Thanks, bud. You save me from getting a headache 😂

[@RJ_Cormac]

Love the smashed crease where they sat the trailers jack foot plate on the harness. Definitely no problems there! 🤔😒🙄

[@darrengoodlin6294]

I can tell you exactly why fuse 10 it comes blown and it's not because of poor grounding on the trailer that actually had 3 systems which reduces the current just the opposite it has to do when plugging in the trailer block the flatwood and the lights on the vehicle are on it's real easy to short the ground which is right next to it to the pin which is the trailer lights that's why F10 gets trashed so easily thank you very much for the helpful I just burned mine out and doing just what I said and guess what it's dark and finding F10 was an easy thank you

[@jasonhenley6810]

So should the truck lights be off when plugging in the trailer?

[@darrengoodlin6294]

@@jasonhenley6810 yes that is how I will be sure to have them off when I connect the 4 pin flat trailer light electrical plug in the future

[@kwheeler61692]

This happened to my work truck, 2020 f350, dealer fixed it under warranty, they said plug was corroded and ground was shorted out in the harness above the axle. First they replace the plug and fuse and it still didnt work and then they had to chase the short in the harness. Truck is only 9 months old, crazy.

[@davebetker8788]

Up here in Canada we have Princess Auto (Harbour Freight), they have a 4 gang and 7 gang led dummy trailer plug, easy peasy to check all circuits at the same time on the truck, stupid cheap too....

[@Ms360pro]

Boss man, thank you very much for this video. I was able to fix my trailer light very easily. Thank you

[@josephbenishek1060]

Was exactly what was wrong with mine. Thank you

[@Upsidedowndog27]

We have a 2019 f350 that has no working running lights for trailers. We checked the fuses and found fuse #99 for “trailer tow parking lamps” that was blown. We are in the midst of getting a replacement I will update if it fixes it. Btw the trailers brake lights and turn signals still work, just no running lights.

[@bignort9479]

We have this issue multiple trailers, multiple ford f350s randomly blows fuses no reason

[@ChrisM-gv2st]

How does that plug get that corroded in just a few years.

[@williameckhoff1334]

So are you somewhere in Illinois? I live in Illinois but hot shot all over the country. I have a problem my trailer brake wire is the only one not working at the pigtail. I have cleaned and greeted connections but still nothing. Can't find a burnt fuse. Have been to at least a half dozen dealers who don't have time to look at it and called at least 30 that said the same thing. I'm pulling a total average 35k lbs daily and need this fixed. I have no trailer brakes.

[@larryrobinson7268]

I’m a regular Ford tech and now you’re a diesel tech hope that don’t change your content to much

[@FordBossMe]

I'll do both gas and diesel

[@operationbs7610]

I think some fords came with the fuse that the customer had to install. That's how mine was it came in a special bag amd disclaimer...not sure if it's that way now probably not.

[@FordBossMe]

I remember some of the trucks being like that actually now that you bring that up

[@FordBossMe]

And there's actually some kind of verbiage talking about making sure trailer connections and things are correct because of how sensitive the system is I believe

[@dhall9281]

My trailer grounded out as I was hitting a bunch of pot holes on the freeway after a fresh rain. I have the fault on the dashboard and none of my lights are working on the right side. Everything is fine in the left. I don’t recall separate fuses for r/l lights. Running , stop , turn all on fight side

[@FordBossMe]

Check the fuse box pull every fuse Check out Aron at POWER STROKE TECH TALK WITH AROD

[@FordBossMe]

May need a scan tool to clear codes And go over that trailer again and fix the issues with wires

[@cobeytriche4808]

Could you tell me what number fuse is for the trailer auxiliary power on a 2012 Ford f450. i would greatly appreciate the help.

[@FordBossMe]

I don't have any information in front of me if you go to a channel called Powerstroke Tech talk with A-Rod he can help you

[@noaccount3508]

Where are you located I'm in texas have the same issue can't figure it out

[@confidingmadison]

This was a huge help. Thank you.

[@jonmccormick8683]

Most trailers are made cheaply, quickly and poorly suspended. =Use LED lights on these (less energy used) for sure and maybe even some conductive grease on the connections.

[@alexlucero7383]

Bingo!! Thanks, same issue here 2021 f450

[@tomseim]

A bad ground will do the opposite: it will add resistance to the circuit which reduces the current thru the circuit. A bad ground will keep your lights from coming on bright, or at all, but it shouldn't blow a fuse. I would be looking for some frayed wire insulation (particularly where the wiring goes thru a hole in the sheet metal) that is making an intermittent short with the trailer body. This may only happen while you are driving and the vibration causes the frayed wire to momentarily touch the trailer body.

[@FordBossMe]

This is not completely true because if a computer doesn't see a good ground it could possibly increase voltage flow in some situations depending on how it's regulated Don't act like a now it all here...one of my rules please respect that

[@sparkythedetroitdoggo8281]

I used to install aftermarket trailer harnesses and brakes . What a nightmare that was . I also just realized I'm missing my Snap On test light just like yours . You didn't take it did you ? 🤪

[@FordBossMe]

Nope I promise

[@dalesullivan1610]

Thanks. Great video and fixed my issue

[@juanlucatero8670]

Hello I was wondering if could help me I have a xlt 2020 f250 And I got reared end and I had a manual tailgate and I purchased a push button one And installed it All the wires for the electric tailgate are there from factory and I added the push button in the cab (the wires are also there for the plug) But I still can get it to work I tried looking at forscan but not getting anything

[@FordBossMe]

Tune in tonight 8pm central to PowerStrokeTechTalkwARod youtube and we will be live answering this, make it known in chat I asked you to show up

[@jeremymoran5123]

Really like that test-light. What brand is it? Good electrical diag. as well.

[@FordBossMe]

It's a smart LED test light it was given to me by a diesel tech Im not sure of the brand

[@jeremymoran5123]

@@FordBossMe ok 👍, thanks. I enjoy/learn from your videos. Really appreciate what you do.

[@rixior8241]

You are the Boss!!! Thank you so much!

[@GusHernandez88]

Hello sir. I have a 2018 f 350 super duty. My trailer with electric brakes works fine but when I hook up my electric over hydraulic they don't work. Trailer gain control comes on but does not have enough power to stop Trailer. Is there a fuse for EOH ????

[@FordBossMe]

Look in my library for my trailer videos on the F350s there is a video in there I'm driving to work right now so I don't have time to go through it and look

[@barrettmorrow1374]

Great vid thanks!!

[@DaRulerofDaSouF]

Yessir you’re a life saver 💡

[@ricos5549]

It worked buddy thanks godbless you man!!!!

[@FordBossMe]

That's what I do brother glad I could help

[@jamesborenstein6949]

Good luck. No one at orileys or advance auto carries the micro2 30a fuse. Next day Amazon for the win.

[@xc05pga2]

Great video. Thanks for the help!

[@privateperson2940]

Got a 2022 Ford F450. We blew fuse or fuses, No brake lights or both turn signals or night lights. Can anyone tell me the fuses. We pretty sure we blew them.

[@brittanythompson6527]

What type of fuse. Regular micro?

[@FordBossMe]

I believe micro but if you look at your other fuses it'll show you

[@jdog5086]

I've been watching your videos and find them interesting and you seem like a stand-up guy appreciate that so I thought I'd fire question at you I have 2020 Chevy Malibu that's due for a trans service the manual says at 45k replace fluid and filter I also have a 2021 GMC at4 with the 10-speed transmission that from what I read Ford pretty much designed it and the manual says the same thing for the trans service so I called the dealer about getting the Malibu's fluid and filter changed and they want to sell me a trans flush I know some Transmissions have a metal screen to catch debris not sure what either transmission has for a filter but if it's more of a traditional trans filter I don't feel like flushing it is cleaning it whereas if it was a metal screen I can see backflushing would work so what is your thoughts on the trans flushes? Thanks in advance

[@FordBossMe]

Replacing the filter and the fluid right now would probably be a good idea on the Malibu on the 84 with a 10-speed I think that's the equivalent our 10r80 right? I know whenever I flush these Transmissions I have to do it a very particular way my first remove whatever is in the pan and then I refill it with fresh fluid and then while the vehicle is in the air I insert a tube into the side of the transmission and then lower the vehicle with it running and I continue to put in and pull out one quart at a time because there's a thermostatic control for the new 10-speed transmissions and the vehicle has to be running in up to operating temperature in order for it to flow properly So after I pull the for 4 and 1/2 quarts out inside the pan I'll continue to run it and as it's running I will cycle one quart at a time in and out to pull out within their it's never going to be a complete actual true flush with that transmission And to pull the filter and fluid out of that it's kind of a bear and it's going to cost quite a bit of money most of the time with low mileage people just do flushes anyway because nothing's coming apart inside the transmission so there's real no worry about replacing the filter until you get closer to like 80,000 miles maybe a hundred thousand miles and even at that most people still don't do the filter inside the trans

[@danielfoster7221]

Thanks been looking for that same issure

[@marcosbonifacio7513]

Nice thank you 🙏🏼

[@Nohandlebar2]

Nice video

[@charlespaluha1247]

You're right 99.999% of the time it's the trailer every time I've looked at something it's always the trailer except for one time has been the body control module question for you is air over hydraulic trailers no communication with trailer brake module is that normal or not normal because when they hook a electronic brake trailer to it it works fine no one has been able to answer this question yet looking to trailer experts for an answer

[@FordBossMe]

I'm not sure about the hydraulic set ups

[@charlespaluha1247]

Did you get that part number I sent you for that petcock part

[@FordBossMe]

@@charlespaluha1247 no

[@charlespaluha1247]

@@FordBossMe look up on Google or whatever GM radiator drain plug remover part number lt-720

[@charlespaluha1247]

@@FordBossMe it's a metal one quarter inch drive not a plastic one

[@StreetTakes]

Thank you boss!

[@derrickbeene89]

Mine is a 2019 f350 my fuse box its different than the one in the video

[@JesusTorres-ko6mh]

I have 2008 f 250 super duty brake lights don’t work in my trailer I don’t find the fuse can someone know how I fix

[@FordBossMe]

Maybe no fuse and it's the connection in the wires back to the truck connector

[@Stemp334]

I just had this happen to me. No running lights on my trailer

[@KosherFinance]

It blown?😳

[@FordBossMe]

Yes

[@KosherFinance]

@@FordBossMe daumn😳

[@redneck5198]

I think you’re wrong on the years. My 2020 is fuse 10 but my buddies 2019 is fuse 99.

[@rodrigueztreeservices6475]

Very helpful

[@AMB_REELZ]

enter the vin lol

[@petermurray392]

It only happens when the lights are on auto

[@FordBossMe]

I'm not sure then it's going to have to be diagnosed unfortunately I would go through and start checking all of the connections in the rear of the truck where they rot out underneath the bumper area inside the frame

[@patmurphy2472]

Trailer grounding. Grrrrrr