Your Car's Fuse Box Explained: Everything You Need to Know About The Stuff In Fuse Boxes!
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- čas přidán 25. 06. 2024
- Your car's fuse box is not just filled with fuses! The fuse box contains relays, diodes, many different types of fuses, and more components that serve the electrical system and protect it from damage.
0:00 Car Fuse Boxes Explained
The automotive fuse box is a hub of protection for the electrical systems in a vehicle.
0:39 What Does a Fuse Do?
Fuses protect circuits and fail when amperage gets too high, so you can replace an easy-to-access and inexpensive fuse rather than whatever expensive part it was protecting!
2:15 What Does a Relay Do?
Relays allow a small current to control a large current. Many switches and computers don't like high amperage, so the relay handles it for them!
3:30 What Does a Diode Do?
A diode only allows current to flow in one direction, protecting components that would be damaged by current travelling in the wrong direction.
4:10 How do You Find The Right Fuse, Relay, or Diode?
Finding the right fuse, relay, or diode is an important step in troubleshooting a circuit/electronic item's issue. There are two main ways to find them, and the best way will differ from vehicle to vehicle.
5:12 How to Remove a Fuse or Relay
Removing a fuse can often be done with a fuse puller, but needle nose pliers also work well. Relays can be a bit tougher, but a dedicated pair of relay pulling pliers can help tremendously!
6:11 Why are There Empty Spaces in the Fuse Box?
Are you missing fuses? Those empty spots may be there on purpose! Sometimes they are there to allow for future-proofing, but other times it's just where a feature would be fused if the vehicle came with that feature.
6:51 Bonus: Less Common Fuse Box Information!
This section contains information about breakers, fusible links, in-line fuse holders, fuse blocks, and more!
9:32 End Thoughts
Do you have any questions about automotive fuse boxes? After finishing the video, feel free to ask in the comments section, and be sure to check out our videos covering specific items from the fuse box in more detail!
Why use a fusible link instead of a fuse?
A fusible link deals with excessive amperage differently than a fuse does. Quick moments of high amperage/current are allowed to happen, but if the amperage is high for too long, or way too high, the fusible link melts/burns away, disconnecting the circuit like a fuse would. Many fusible links are the last bit of wire before the circuit grounds to the chassis.
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Can I get an F in the chat for those fuses that were shorted out for slow motion B-roll footage? Also, here are some related videos:
Automotive fuses explained: czcams.com/video/KtRMPIxXP7o/video.html • Automotive relays explained: czcams.com/video/t5DU5x7Zz74/video.html • Are Relay Pliers Worth Buying?: czcams.com/video/c7d78Ytwn5E/video.html • Automotive Electrical Basics Playlist: czcams.com/video/HQeKQuAXClc/video.html
F
I have a question how many of those components got to be hooked up in order for the car to start how can you make the car start just to start
F
👍
F
I'm an upcoming technician, and I'm starting my job at Ford this week as a quick lane tech. This channel is really gonna help me reach master mechanic
You should find tropics on Google every day, what did you face problems in your work, keep update your self day by day
Hows the gig going?
Ford Transit-250 sucks fix IT!!!
How your job going
I'm 94 years old... I have been a mechanic for 7 years.. Hoping to get my master mechanic in next 12 years or so
This is more informative on electronics than most videos. I've been struggling to understand what diodes do but here you made it a world more simple.
Thanks! That's great to hear. Let me know if there are any other components that you'd like me to cover. I might be able to make a video about it, or I might have one uploaded already!
This is one of the most informative videos I've ever seen on any topic. Well done.
Empty spots in a fuse box can also exist for hidden features. Such as for allowing a vehicle to be towed with no power, by allowing the transmission to shift into neutral and etc.
Great video. Very detailed & easy to understand.
Amazing! You are a great teacher
Very well spoken and depicted.keep making videos.👍👍
F! Absolutely awesome video. Thanks so much, learned heaps.
Very well done. Thank you.
Thank you for sharing your knowledge :-) you have wonderful skills!
Thx
Very important information thanks for this video 🙏
Great video man first video I ever watch but great information 👍👍
i feel bad for all of the innocent fuses that lost their lives in the making of this video. RIP
If this video does well, they will have given their lives so that others may live. RIP
@@CarsSimplified I refuse to make things better...
Very thorough! So it should really be called a fuse, relay, transistor, and diode box! :P
Rolls right off the tongue!
Hopefully there are enough electrons in the sulfuric acid and lead box to power them all!
Thank you sir just been insightful
This was amazing, thank you!
Dude that was the best video I've ever seen.
Great vid...thanks man
Excellent presentation. Quality video and sound.😀😀
Excellent video and very informative.
This was great. You went into great detail but still managed to do it in a 10 min video. Also the video quality was fantastic. Good job
Thanks!
Great video.
Nice video, but I would have added a section on the different fuse types, as they can be confusing, especially if ordered online. (The PAL line, MCASE vs JCASE, mini, low profile mini, micro2, etc.)
This is a tremendous teaching video, which I will be re-watching and re-watching until I thoroughly understand. I see one of those awesome 04-06 GTOs in some of the shots. My question is this: I want to give my two after market gauges in my 2006 GTO their own power source tied to the ignition, so they only turn on at engine start. Right now I believe the shop wired them with the car audio which is on a switch, I think to the cigarette lighter in console. Thus when I turn the audio on with engine off, the gauges also turn on, which I do not like. So one person suggested add-a-fuse. Your video convinced me, no way. Another suggested I buy a spare fuse block and harvest a terminal from it, this idea I like very much (and your video discusses it). Do you agree? Would both gauges be able to work from a single added terminal? How do I do it? Any videos on this subject especially in a GTO? Needless to say, if you are anywhere near Phoenix AZ, I would gladly drive there and pay you well to do this.
Thank You for All that you are doing for our Planet Earth.. Peace.. Shalom.. Salam.. Namaste.. 🙏🏻 😊 🌈 ✌ ☮ ❤
Thank You.
Thank you
Beautiful. Your this informative video is awesome. Professional and very informative. Fast and clear and solid info. 3 thumbs up. 👍🏼👍🏼👍🏼
Thanks!
Except he makes the same error almost every maker of tutorials commits. He spends 3 or so minutes giving a basic description of what a fuse is and why it is important, presumably under the assumption that many viewers will lack even such basic knowledge. Well and good, but then he immediately afterwards speaks of an ECU under the assumption that the same viewer will know what the term means. How many viewers might we estimate know what an ECU is but do not know the basic concepts behind the value and use of fuses? If anyone guesses anything but zero I would be very interested to hear how they think that situation came to be.
But I guess he can't be faulted too badly because everyone seems to do this kind of thing and the whole tutorial itself is considerably better than most automotive how-to vids.
Thanks 🙏
Nice information bro
Tysm👍
Yes dude this helped 🤙🏽 2005 9-3 saab didn't come with an owners manual so have to learn everything online, car randomly wont turn on so checking all fuses 🤙🏽 key won't turn in ignition, interior lights wont come on, person who had it unplugged the radio and can't get any sound. First car I've since 2019, dude I just wanna enjoy my first car in awhile ya know, 🙏🏽
Did you figure it out?
I believe we did lol, thank you!
Great great video
Thanks!
Thank you!
I just now came across this comment, apologies for the delay in acknowledging it!
Good video
Hey Mate
Great vid.
What is a sub fuse for in a Subaru a forester fuse box
Just great 👍🏻
Thanks!
Nicely explained! My Miata Infotainment system changes screens without me requesting it to do so. Any suggestions?
Thanks, Dan
Thanks for the video. You're cautioning against fuse taps which makes sense. On the Power fuse (often 20A) inside the cab, is that running to anything typically?? Everything has its own fuse even cig lighter so I wonder if the Power 20A fuse is one we can put a tap into? Thanks.
Great video! I have one question - Is a control box and a relay the same thing?
Thank you for the nice video. I find that there's a lot more of vacancy in my fuse box. Why? Should I add fuses?
Another great informative video on your car's electrical system.
Thanks!
This one took longer to make than my usual videos.
@@CarsSimplified yes I noticed it was a few extra minutes longer than your usual videos.
@@CarsSimplified i have a question the dash lights stop working all of sudden and they said that they have to remove the instrument cluster for 350$ ? could it be that its just the fuse box and i am only getting scammed ?
Well, that's a possibility, but if you don't trust your mechanic, you should probably take your car to another one. Pulling the dashboard apart is a very involved job that mechanics don't want to do if they can avoid it, so if they are indeed going in there, it's not something they would pick in order to put work on the clock.
@@CarsSimplified that makes sense thank you so much you are right!
Like using a lower pound test line on your fishing weight so when you snag you don’t lose your entire rig. 🎣 😜
Thanks for the very detailed video with superb descriptions. I am still trying to find out what a diagonal line running across certain fuses means on the inside cover of a fuse block under the engine hood. Any elucidation to learning that would be helpful to me.
If it's what I can recall from memory, it's a blank/spare fuse/relay location? I'm assuming the spots have no other information and it's just a diagonal line striking through the location where information would otherwise be. Apologies for the late reply! I seemed to have missed a few.
Thanks.
Appreciate the video explanation but have one more question: How do I locate the accessory fuse or relay in the fuse box located in the engine bay under the hood. If it doesn't exist what is the best alternate relay circuit can I share my after-market front lower bumper DRL lights with. This is for a 2021 Toyota Corolla LE sedan? I would appreciate your advice on this matter.
No fuses were harmed in this video
My main concern is identifying "fusible links." The picture you have of one--I've seen, but how can I tell the difference the blue plastic link and your ordinary plastic crimp joining two wires. I've checked all of my fuses and pertinent relays--all good, but, my power windows and blower motor are still dead. Thanks for showing a picture of it.
Can I use blank fuse slots to power up after market accessories such as dash cam?
are there any extra points in the fuse box to which we can connect new stuff like dash cam etc ?
Fusible links are the link type fuse or the latter one is something different? Thanks
Hi All good stuff thank you. Confused about running 2 fuse boxes. 1 running from the ignition switched, so that fuse box only live when the key is turned the other box would have a direct feed from the battery So which car circuits need to have there feed from the fuse box switch by the ignition and which circuits need the fuse box with the permanent feed directly from the battery?
Hi, what are the IG KEY fuse 1 & 2 for ? in a MAzda 2 2011. Thanks
You should keep spares fuses with you incase emergency you can use it. Don't use fuse over capacity
Wondering where to find the 'hot' interior fuse - one always on/connected to battery... trying to wire up a dash cam. Pulling each and doing an electric meter is a pain, but seems the only way.
is the voltage 12 to all fuse points, or can it vary?
Thx for the info I have a 2013.ext cadillac the bottom day light bulbs not working on both sides I've changed the bulbs and fuses still not working is there a way to check the wiring without changing the whole box need help thx
I know this is probably a very stupid question, however, im looking to find out why the relays i believe to be interchangeable are not. I have a 98 f150 and I'm trying to get my compressor to come on. Ive done a lot of testing and have more to go BUT i noticed that my manual shows i should have an ACC DELAY RELAY (FULL) and an ACCESSORY DELAY RELAY (FULL) inside under my dash on R4 and R5. Well there are no full relays at all. Before i start taking apart things that are much harder to check on why. I took what i thought to be a full relay from my junction box and when i went to place it in the R5 ACC DELAY RELAY spot its loose. All 3 of the full relays under dash have no visible metal/connectors (not sure how to say that). I was going to head to a junk yard later, but i will have to wait a day or so and would like to work on it in the meantime. You said in the video that it could be from the manufacturer just adding spots or open spots for things later. But the horn relay SHOULD fit into my ACC DELAY RELAY. Am i missing something??
good
Is it possible if in the diagram of the fuses in my car there are two fuses that are supposed to be but in practice in the box itself they are not present and they also do not have the connectors to which the fuse legs are supposed to connect? My vehicle is a Kia Picanto 2013 manual transmission
My car usb outlet still has power for awhile after i turn the car off. I want to change it so the usb outlet has no power when the car is off. Should or can i move the 15A fuse for "accessory sockets" to a different empty 15A fuse socket?
I want to add a fuse block to my car in the cleanest way. Without splicing into my ignition solenoid I want it powered by ACC / On position. What should i do? Connect the power wire to the power wire of the origional fuse block to share its acc power source and ground it to the frame? Do u have a video for this?
I would like to electrically disconnect low fluid indicator in my 2011 cadillac srx is there a fuse that can be used or another way to disconnect it ?
2004 Toyota Corolla what fuses under the hood go to what components? And does any fuses in there fires the coil packs
Wish there was a tutorial on how to add a circuit to a fuse box using one of the empty spots instead of using a fuse tap (like i did). But im sure thats far more involved.
What does +B mean on my fuse diagram? I have multiple fuses that say what they are, and then "+B" underneath it.
How do you remove the pink 30 amp fuses? Do you need a special tool?
How do you remove the Jcase fuses example a 40amp fuse
2000 ford taurus has no ground to relays.Is there a ground to the engine bay relay box? Thanks.
Ok so I have an 05 buick terraza bought it and started driving home and the van just died. Well I'm thinking the engine bay fuse box would need replaced because the prongs and everything are bent. Anyway there's a sticker with a barcode on it and above it, it says (P) then the numbers. Is this the part number I need to order the right one? Or how do I find one that's exact?
how hard is it to remove i believe they call it a J case fuse? at 9:49 theres a bunch of pink 30, blue 20, etc, do they just pull out, I have one Id like to change on my car i can pull it out slightly but doesnt go any further. Thank you
So, do I need to fill this empty spots with appropriate fuses or not?
I got three different LED kits. Do i just connect them all to the same wire to the fuse tap? What about the ground cant i just connect them to the same wire?
Question, without the relay in the fuse box I am get 12v in 87 with the key on and nothing on 30 is that correct?
I need help! One of my fuse connector is messed up: it appears it does not supply ground (or the negative). What do I do? Other fuses and relays are working properly in my engine fuse box when checked with a multimeter; it is just that one fuse connector that is not working. Please help!
32v 255 strip fuse can be on Renault Megane 2 original fuse is 32vCAL1
Can someone please tell me what the B/U i.e. backup (in the fuse box) function is ?
What is the exact symbol of hazard,brake lights and signal lights and exact volts each fuse
I noticed you mentioned the fuse block at the end. I changed my battery once & alternator twice but when I start my car the voltage drops. Belt appears ok and is tight. Fuses all work under hood but NONE of my fuses work inside my car near my knee at the dash panel. I understand switch has to be on for some to light up but I get nothing at all. I think they have to be related. I keep getting stuck on checking relays bc nobody says the number to use in a manual multimeter
I have the same issues
What about the box under the fuse box where the wires connect to?
recently purchased a 1994 lexus ls400...shortly after, i noticed that the buttons on the radio and the shifter markers do not light up..i pulled the panel fuse (7.5 amp) and it seemed ok. want to have someone look at it but in the meantime i bought a usb outlet for my cigarette lighter and plugged it in...the power from cig lighter worked because the USB port lit up but a few moments after plugging it in the wiper fluid sprayed and the “traction control off” light up on the instrument panel without me touching anything. will be taking it to get looked at but wondering if you have any thoughts? Seems odd that plugging into the cigarette lighter would trigger the washer fluid to spray. perhaps there’s a ghost lol jk cheers great video
Do you recommend any anti corrosion spray in fuse box, I wash my engine bay?
I have a factory subwoofer in 2015 Chevy equinox I am trying to find out what fuse/amp powers that because no sound is coming from it
I got a question... I have a 2012 Chevy Traverse wich I replaced the motor mount so I had to disconnect the fuse box located inside of engine compartment passenger I forgot to disconnect the battery cable located inside the car now the car doesnt start, no electrical power at all when I reconnected the possitive cable to the fuse box. I wonder what could go wrong?
HI my fuse box is all messed up I looked in my manual and all the fuses were all mixed up I feel like there was some kinda custom wiring going on in there because I see some speaker wires how do you know if someone did work and modified or changed any components in the vehicle and maybe it changed the fuses that the correct fuses that were supposed to be there in accordance to the manual?
How would I test the voltage of my main power distribution box
Every fuse is perfectly fine in the interior fuse box. I used a light tester on every fuse and only three of them turned on the light tester which is the Stop Lamp, Rear Defog, and the Room Lamp. The rest of the fuses in the interior fuse box did not turn on the light tester
Which fuse number make the heat and windshield wipers work
2002 Ford mustang 2 door
Hey I’ve got a question? Is it safe to keep a fuse out of its position and have it essentially “turned off”. I’m mainly referencing to my power antennas fuse that I’ve removed because it’s motor is stuck in a constant motion.
As long as it for sure doesn't control anything else that you want to keep available, then yes. Sometimes that's a method mechanics use to diagnose an issue. I can't imagine any vital stuff tied to the power antenna circuit but it's always worth checking.
Let’s say I want to add a electronic deceive to the dashboard of the car that is powered by the car that stays in the car, and I don’t want to use the cigars lighter, would the fuse box be the location to attach these devices, or do cars not have this option in them
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2014 Town and Country van. What is going on in my van is, the windshield wipers are going, all the lights are on in the dash, it say to check to service the tier pressure system, service the blind spot system. Plus it say the cadlic convert is gone. Getting pretty expensive with all that happening at once. I looked at the fuse box, and a few fuses are missing. Don't know how that happened. Have any idea's???
I bought a dash cam and had it installed at a shop. The wires were winded around the metal pieces of a fused and the fuses were connected to the fuse box. I have doubts that this was not supposed to happen. Any advice?
Why do we use Relay in Fuse Box ? Although we have seperate Relay box
I have a beeping noise for icey roads that I want to shut off. Do you know how? I have a 2018 mitsubishi outlander sport
I would like to know what the relay fuse number for my Ford 150 year 97
Please, What are the smaller " Physically" sized fuses. Although they have the same amperage values as the standard size, blade fuses. My fuse box has both types?
There are different sizes with different fuse codes (like ATC or ATS) that do the same job. Why an automaker chooses to have a mix is probably due to the fuse box being designed with the possibility of higher amp fuses that require a larger fuse size, and then they fill some of those larger fuse spots with lower amperage fuses so the smaller size fuse options don't fill up completely, leaving only the large section with empty spots to add new features to later. I don't know if this is the complete reasoning behind it, though.
We're actually trying to find out on the 2004 Toyota Corolla what fuse fires the coil packs because the coil packs aren't firing at all, on all four of them.
salut..unde se află releul sau siguranță la kia k2500?pt. Ahtuator căldură trepte de jos sus a călduri în cabină?nu vine curent la acest Ahtuator de schimb direcție căldură.
Great information. Question, I am trying to track down a charging problem. A prime suspect is an ac compressor replaced 6 months ago. The mechanic had some issues with the connector/wiring at that time. When I removed the a/c fuse inside the cab of 06 sportage, I lost all response from auto windows, (they wont operate with that fuse pulled). Is it normal or common for a fuse to control more than what the box diagram indicates ?
Thanks, and great question! While it is semi-common, those two components (AC compressor/auto windows) being linked seems a little odd. Components linked together on the same fuse tend to be either related or in close proximity, such as the power accessories/cigarette lighter fuse also providing power to the OBD-2 port. If there is some sort of relationship, like the windows being down disabling the AC automatically, that would make more sense, but I haven't encountered a car that does that. I have limited experience with Hyundai/Kia AC systems, though.
@@CarsSimplified Thanks for the response. I can say that till pulling that fuse, I knew of no relationship to the two functions. I would frequently start the ac up with some or all windows partially down till the ac got really cold on a hot day. Any suggestions for a next step?