#Parallel wiring | Explore Tumblr posts and blogs

sngl-led-auto-lights · 20 days ago

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Why are car headlights wired in parallel?

Car headlights are wired in parallel circuits rather than in series for critical functional, safety, and reliability reasons. Here's a breakdown of why parallel wiring is essential:

Independent Operation

Failure resistance: In a parallel circuit, each headlight has its own direct connection to the power source (battery/alternator). If one bulb burns out or fails, the other headlight continues working.

Example: If headlights were wired in series (like old Christmas lights), a single blown bulb would disable the entire circuit.

Full Voltage Delivery

Optimal brightness: Parallel wiring ensures each headlight receives the vehicle’s full system voltage (12V or 24V).

In series, voltage splits between components, so two headlights would each receive only 6V (half the required voltage), resulting in dim or non-functional lights.

Safety & Redundancy

Regulatory compliance: Automotive safety standards (e.g., FMVSS 108 in the U.S.) mandate that vehicles maintain at least one functional headlight if the other fails.

A single working headlight is better than none for nighttime visibility.

Current Management

Lower risk of overload: Parallel circuits allow current to split between branches.

Example: Two 60W halogen bulbs draw ~5A each (60W ÷ 12V = 5A). In parallel, the total current is 10A, which the car’s wiring and fuses can safely handle.

In series, the same current would flow through both bulbs, but voltage drop would render them useless.

Simplified Diagnostics & Repairs

Isolated faults: A blown fuse or broken wire in one headlight circuit doesn’t affect the other.

Easier troubleshooting: Mechanics can test each headlight independently without disassembling the entire system.

Why Not Series Wiring? Factor Series Circuit Parallel Circuit Voltage per bulb Halved (e.g., 6V each in a 12V system) Full voltage (12V each) Failure impact Both bulbs fail if one breaks One bulb fails, the other works Brightness Dim or non-functional Maximum brightness

Real-World Analogy Series: Like a single-lane road—if one car breaks down, traffic stops entirely.

Parallel: Like a multi-lane highway—if one lane is blocked, others remain open.

Key Takeaway Parallel wiring is non-negotiable for headlights because it ensures safety, reliability, and compliance with automotive standards. Without it, nighttime driving would become exponentially riskier due to sudden total light failure.

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rogerdeakinsdp · 3 months ago

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American Graffiti (1973) dir. George Lucas Scarface (1983) dir. Brian De Palma Barb Wire (1996) dir. David Hogan The Devil Wears Prada (2006) dir. David Frankel Lady Gaga - Alejandro (2010) - Official Music Video Barbie (2023) dir. Greta Gerwig JADE - IT girl (2025) - Official Visualiser

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jack-abbot · 2 months ago

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"What's most important is The Cause."

STAR WARS PARALLELS:

Andor, 2x06, "What a Festive Evening" (2025) // Rogue One: A Star Wars Story (2016)

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vaguely-concerned · 2 months ago

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rookanis really is like... first base is you walking through the haunted ruins of my mind to find me in an act of breathtaking psychological intimacy with added tam lin undertones. second base is baked goods (cautious erotic connotations). third base is deicide. THEN we kiss. also second deicide of course once you pop it's hard to stop

#I cannot stress this enough -- ideal relationship development for me. best friends who kiss and also kill god together sometimes #no notes #dragon age #dragon age: the veilguard #dragon age: the veilguard spoilers #dragon age spoilers #rook x lucanis #rookanis #lucanis dellamorte #oc: Ellaryen Ingellvar #the way inner demons is structured reminds me a lot of the development through garak's stories in the wire in ds9 #which was something that some long time readers might remember also made me feel INSANE to contemplate #in the very best of ways. I pray for my brain to get it together to the point where I can make the inner demons analysis post #that lives in my heart. I already have the video part of it put together. one day. one day please.#(the paralleling 'yours is the kindest voice in my mind' subtext especially is like. augh. AUGH.)#if I trust my thoughts to anyone it's you. you know my mind. I've assumed you know my heart because it beats for you it's been beating --#that thing mary kirby said about how both lucanis and spite trust rook above other people and themselves #heLLO hello can anyone hear me it all makes me feels so out of my mind

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feargender · 10 months ago

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jesus can always reject his father, but he cannot escape his mother’s love blood

marie antoinette (2007), dir. sophia coppola

elektra, sophocles

nature morte., joseph brodksy (tr. george l. kine)

untitled (to mom)

mad men (2007-2015)

untitled (to mom)

the elektra complex, @filmnoirsbian

#words #wire mother #parallels #complicated mother daughter relationship transcends gender fr

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woozapooza · 7 months ago

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Black Sails 3x01 / The Wire 2x06

#Black Sails #blacksailsedit #The Wire #thewireedit #Eleanor Guthrie #Omar Little #x #my gifs #multistory #parallels #Woodes Rogers #Ilene Nathan #I cannot possibly be the first person to notice this #but I looked and looked and couldn't find a gifset of this parallel so I had to make my own #100

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beargyufairy · 5 months ago

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Two Sides of the Same Coin

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shadowduel · 1 year ago

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We talked about making it I'm sorry that you never made it And it pains me just to hear you have to say it You knew the game and played it It kills to know that you have been defeated I see the wires pulling while you're breathing . . .

#ransara #ranmaru kageyama #sara chidouin #yttd #your turn to die #kmgsn #kimi ga shine #shadowart #NOTES TIME!!!#so i wanted this to directly parallel the moment where midori took maple back to the operating table to “fix” her #aka mold her into a killing machine for his own benefit #i like thinking about sara and midori parallels #and i think it's no coincidence that so much of chapter 3 focuses on a theme of toxic romantic feelings #kinda like how ch2 has a strong theme of family? but anyways #something else i wanted to do was show ranmaru's expression halfed between endeared and something more sinister #such as when we see his eyes go white after killing alice/reko #overall it's just kind of a really cool metaphorical piece i had fun doing #“fixing” not as in “making better” but as in “making how i want”#oh and of course the arrangement of wires parallels his victim video LOL #kio dont look #hi kio if u looked #which i bet you did and then scrolled past but still read the tags #or maybe u will look at it with ur eyes?!?! woah....#anyone smoke weed in this threa

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thematicparallel · 10 months ago

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Like at the end of the book, you know? Boats and tides and all. It's like you can change up, right? You can say you're somebody new, you can give yourself a whole new story but what came first is who you really are and what happened before is what really happened.

The Wire 2x06, "All Prologue"

#ALL PROLOGUE TO WHAT !!!!!!!#the wire #them pulling out the gatsby parallels *bloodshot eyes emoji*#EDIT: ok now i see what it's a prologue to. damn 🧍🏽‍♀️

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ulteri0rm0tives · 2 months ago

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....and if I said I wanted Johnny and Kerry in the messiest divorce arc since Paul McCartney and John Lennon.. what then...

#SORRY i was listening to how do u sleep by lennon and i may not like that guy BUT my GOD #he knows how to write a break up song huh....#and im not even personally into bandom like that BUT FR WAS SOMETHING GOING ON THERE BC YALL #no reason to drag out the messiest breakup of the last century like this.....#like i want these two throwing shots at each other in interviews and i want them writing whole rock ballads of a diss track #i want them being petty as fuck towards each other in the public eye post samurai when theyre pissed off at each other #then acting all buddy buddy when on stage chemistry just absolutely oozing between each other #and then off stage want them at each others throats letting their resentments known the minute their off stage #i want it to be a whole will they wont they on off messy ass situationship the tabloids can barely keep up with #as they watch that slow break in real time the degradation of their relationship all the way up until the op....#IM SORRY I DONT WANT THEM TO SUFFER but... its just how they're wired its not MY fault #(i want u to guess whos who...)#(THERES PARALLELS TOO OKAY especially since lennon was considered the more popular beatle that #and how do u sleep is typically regarded as the better track #and lennon in the song devalues the FUCK out of the contributions McCartney made to the band #like how kerry felt sidelined/overshadowed by johnny. like how i KNOW johnny was constantly devaluing his and everybody else's contributions #due to 'not fitting the vision' or some shit like that he'd use to justify it #(LENNON ALSO CALLS HIM PRETTY LMFAO while aslo using it as a way to talk down on him SO IM JUST SAYING))#((also in too many people (mccartneys response) has lyrics like 'you took your lucky break and broke it into two what can be done for you'#and I KNOW SAMURAI DIDNT NECESSARILY BREAK UP BC OF THEM AND THERE WAS A LOT OF FACTORS #BUT U CANT TELL ME KERRY AND JOHNNY'S RELATIONSHIP DIDNT INFLUENCE IT TOO))#(((GOD LISTEN I HAVE A VISION AND IM SEEING IT OKAY #idk if their break up was on the levels of breaking pop culture news like the beatles nor can i b sure to compare samurai to the beatles #...but you know who tf would? YOU KNOW WHO WOULD THINK HES LIKE FUCKING LENNON? HAD A BIG FUCKING HEAD LIKE LENNON??? IM JUST SAYING)))#((((please ignore all the typos and grammatical errors man i KNOW I USED THE WRONG THEYRE but its 3 am and ive had like #its 3 am when im typing this and also running on like three hours of sleep in the last 24 hours 😭))))#silverdyne #johnny silverhand #kerry eurodyne #ult speaking

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dyinggirldied · 8 months ago

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Leaving him behind

Ep. 98 vs Ep. 133

#han brothers #is it coincidence that the two birds on the wire song starts as soon as i upload this?#han yoojin #han yoohyun #parallel #my s class hunters #sctir

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fourcorpsmen · 10 months ago

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Justice League: Crisis on Infinite Earths – Part Three

#crisis on infinite earths #justice league #clark kent #superman #kal-el #lois lane #etc #telegraph wire #i realise i have a habit of keeping screencaps and forgetting to post them #this scene has stayed with me and i might possibly do a parallel to maws

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firstdegreefangirl · 1 year ago

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Always Sunny x MQ: can colors be flavors?

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chestersbraincell · 8 months ago

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The way wires and cables mimic blood vessels and nerves. Thats all I had to say really

#thats all #robotcore #robots #robot #blood vessels #nerves #wires #cables #wires and cables #parallels #similarities #odd similarities #asher's ramblings

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some-pers0n · 1 year ago

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Every once in a while I think about the ship I've been obsessed over for close to two years now and feel like I'm ascending to another plane of reality. Like sometimes you just encounter a ship that hits every single mark and is perfect in every regard and you're left stunned how something like that can even exist

#Anyways I'mma put the actual inane ramblings in the tags #Medic and Engie make me so ill every time I think about them for a while I feel like tearing into things and biting people and throwing up #How something like that can exist completely defies me #I don't know how something that perfect can exist #I'm typically a multi-shipper and while I still kinda am I honest to god don't really care to write other ships #Not cause they ain't good (they are pretty damn good) but because Engiemedic is just on another level #Like dammnnn!! that's why I've spent so long writing a fic about them!#I can't fathom it honestly how characters like that can exist #They're like a slightly warped reflection of themselves #They're both intelligent mentally ill lunatics with no morals whatsoever #The only thing is that Engie is marginally better at hiding it #If you go into headcanon territory than WHOO!! OHH DAMNNN #Like what gets me the most about Engiemedic is how they're so similar #They think and exist on the same wavelength #In tune with each other. Their neurons braided like wires #If I start talking about how the machine and the flesh are not opposites but rather one in the same we gonna be here all day #I just can't...believe the ship exists #Like man how does this happen #You want humour? Goofy wacky experiments and silliness of them violating several conventions #You want angst? Hell yeah they've got plenty of it #Fluff? Buddy I start wailing and sobbing if they accidentally brush hands while working on stuff #I could write about them for ages and not get bored they can fit in every circumstance #They make me SICK they make me CRAZY I love them so so much #They would do anything for each other #I look at what they have and I can feel like I understand what love is #I need to write more oneshots and minifics about them they're so flexiable and fun #Can't wait to do parallels with them in these upcoming chapters #Either way GODDDDD I love these two so much I could go on for hours about them #especially if I'm allowed to talk about headcanons #sp-rambles

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wavesoutbeingtossed · 1 year ago

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Can we always be this close forever and ever / he saw forever so he smashed it up

#TELL ME WHY THIS IS THE FIRST THING MY BRAIN THOUGHT OF WHEN I WOKE UP THIS MORNING #even though I think the actual more relevant parallel is #’ and for a fortnight there we were forever’#also just had an alternate brainwave #that one person saw the forever she was heading towards #and smashed up her life #(I don’t think that’s the intention but my brain is wired today)#lyric parallels

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