Testing the Volvo's wiring harness || CONNECTED outside of the car

[@donovanlucibello379]

Not only was it interesting and fascinating, it is a gift to all of us who cannot speak Swedish to have you express all of this so clearly in English. All of your hard work does not go unnoticed, thank you!

[@michaelrichardson672]

Big thanks sir for taking the time to make and fully explain everything along the path of the wiring harness...This was more than just interesting, its a one-of-a-kind classic...

[@BackmansGarage]

Well thank you very much 😃👍

[@gchordguitar]

Incredibly helpful to see it sprawled out like this. Thanks for taking the time.

[@J.Plbrg.]

I just discovered your channel this morning and i have watched every car related video on your channel. You are super awesome guy! I myself have volvo 945 D24 N/A 1993, have been working on that recently, it has electrical problem somewhere. Tachometer does not work, speedometer sometimes jumps to random numbers, instrument cluster lights sometimes work and sometimes not, i cleand some of the grounds that i was able to find but the problem is still there :D Looking forwards to new video, Keep up the good work,and cheers from estonia!

[@BackmansGarage]

Thanks! Well the channel is still very much still in a learning period, but I do appreciate your positive feedback :) Sorry to hear about your electrical problem. But try to inspect the connectors to the instrument cluster, maybe disconnection/reconnecting them again, some contact cleaner maybe?. I'm a little bit unsure of the 940 electrics, but it is probably something simple. Its hard to diagnose a problem remotely, but i hope everything will work out for you 👍 The Volvo 945 on this channel has actually been to Estonia back in 2018, really liked the country :)

[@MickeyMishra]

As a Low Voltage electrician, and a guy whose absolutely fanatical about wiring ; this video is like watching spicy content but with copper wire and relays. It was such a joy to see this out in the open so to speak and watch the whole thing work like Kinetic art. I am actually quite surprised that I have not seen this in any art installations or some of those lighted LED paintings like they do with paintings of Cities or Bridges where they use Fiber optics and a color wheel. This would make an excellent teaching tool to show kids how these systems work, & give them a strong appreciation of the not only how the flow chart diagrams look like in real life. But also how the different wire gauges work with voltage drop along the Direct Current Path & length of the electrical wires. I also wonder if there ever has been a layout like this done with a CanBus System? That's a lot closer to network cabling using the automotive FireWire or 1394-b automotive implementation of the protocol. I really appreciate how this was laid in a way that physically mimics the real world orientation of the cars electrical system. If Manufactures did this as well, electrical issues inside cars would end up being a whole host easier to diagnose once you see the physical layout and placement of these wires in a car. BRAVO Mr. Backman! Amazing job dude!

[@BackmansGarage]

Thanks, glad you like it :) Wiring can be fun, especially these days with the aforementioned Can-Bus and smart systems to control every single thing in your car 100 % customizable.

[@storthor1892]

Love the video! Do a more indepth video of what you remove when deleating the engine harness, will be alot of help for everyone that is engine swapping! Greatings from Hudiksvall and keep up the good work! 🙂

[@BackmansGarage]

Thanks! Im gonna try that on my next video on the 740 project, ill try my best to make it intressting 😄

[@SimpsonsClassics]

Great video. Wiring scares me lol but I understand it more now.

[@BackmansGarage]

Thanks! My take on wiring is a very split, somedays it can be the just the best stuff to work on, and on another day it can be once worst nightmare 😄 But the satisfaction i get from solving a seemingly complicated electical issue is just the best. I recently had a fault where I diddent get the exepected 5v ref output from a ECU. I started off by checking the fault codes that indicated no com to the module. So i mesured the supply to the module and sure enough it was at Ubat so it should fire up. Checked all of the com wires, grounds and all seemed fine. So by now you start to lean towards a bad module (gets power, but no outputs or com), but it just seemed very unresonable. So after some shooting in the dark trying to find physical damage to the harness I decided to just start over and try to find something that I had missed. So i mesured everything again starting with the connector for the module but this time i diddent get Ubat but something more like 1.6v. So i took the light off my head and put in on the gastank beside me in order to dwell upon the problem and the multimeter shot up to Ubat the instant the light touched the tank. So the problem was in the batterybox on the other side of the vehicle where the supply wire for the module had been rubbing against the frame shorting it out, probably just enough not to trip the fuse. The heat from the contant shorts had disintegrated the wire so that it was barely making a connection. Sure, the multimeter would pick it up sporadically, but the instant you connected the module back up, the current would plummet, leaving the module seemingly dead. That also told me that you shouldent rely solely on a multimeter, at least not on a supply. So its a good idea to put some kind of lightbulb or something to increase the load, simulating a consumer. Or measure while the module or consumer is connected, but in this case that was not an acceptable option due to the layout of the harness and connector. That's a satisfying fault. The worst electical faults usually involves the data links and interferance on those. Most times its just a bunch of bleep blooping an a computer that can help you there.

[@EnriqueLopez-hb5jn]

Awesome tutorial on the wiring harness👍👆☝️👏🏼🤞☝️👆👍👏🏼

[@TTURBOVOLVO]

You're a madman haha, We really appreciate this.

[@BackmansGarage]

Thanks! Starting to wonder where this will end up myself, haha.

[@snkombo2586]

Bra förklarat, nyss fått in all min el igen efter jag dragit det i skärmarna, var lite smådeygt men fick o bilen startade också 😁

[@BackmansGarage]

Grymt 👍 Bra jobbat där! Funderar starkt på att dra i skärmarna också, blir ju bra mycket cleenare look på det hela 👍 Ska bli kul att se om man lyckas få ihop allt och få den startad, vet ju ingenting om styrenheten eller vad den har vart med om. Eller om JG boxen jag ska köra med fungerar, så det kan bli spännande 😄

[@snkombo2586]

@@BackmansGarage dra i skärmarna r du ändå håller på, annars kommer du bara ångra dig sen(: ska bli spännande projekt att följa

[@jdcabauwnl]

I didn't watch anything yet, but I am already liking this! I ll send a reply👍🏻

[@jdcabauwnl]

This was so informative to watch. Good job on your part. The 940 is kinda the same right?

[@BackmansGarage]

Thanks 😀👍 I think its a case of same-same, but different. It will have different connectors but the same general idea 👍

[@jdcabauwnl]

@@BackmansGarage These videos are so nice. In the Netherlands the Volvo 940 is making a comeback because they are so reliable and robust. These video will help so many people including me.

[@BackmansGarage]

@@jdcabauwnl I just try to do the videos that no one tries to do since they are often considered "not very clickable" for massive views. Love the 940 and have one myself, but not for very much longer i'm afraid.. But more on that in another video.

[@NewGunzSociety]

You seem to be very knowledgeable. Have a Fb maybe we could chat about my next project? Basically need to simplify the engine harness/ecu harness so i can eliminate all fuse box wiring/dash wiring/unneeded wiring for derby use.

[@dimitrijacobs7268]

@Backman what did you use for the ground wires? I'm gonna refresh my loom and test it first.. Greets

[@BackmansGarage]

I used 0.7mm2 wire but would probably try around 2.5 is i did it again.

[@an5ama5]

great walkthrough. no SRS system? I'd like to see that someday

[@BackmansGarage]

Thanks! Nope, No SRS, No ABS. I might redo something like this one day with something more equipped 👍

[@an5ama5]

@@BackmansGarage as enzo ferrari said, "I make cars to go fast, not stop" my ABS hasn't worked in years 😂

[@jesperjohanssonn6269]

"I'm colorblind like a bat" hahaha yea it's a bit of a problem when working on electrical stuff 😂😂

[@BackmansGarage]

Yup, I have adapted by reading pinout/in insted of relying on colours 😄 Fun fact, when I was a bus mechanic all of the wires were either white, red or black, in other words, Perfection 👌

[@henrikjonsson4340]

Bra video. Har du några bra tips på när bilen stått ett tag man inte vet exakt om elen fungerar. Ska man koppla på batteriet snabbt och se om det kommer några små gnistor från polerna som kanske antyder på antingen att något är på eller att det är någon kortslutning. Jag har rensat en del kablar som inte var där från början.. Om det fungerar kan man kanske vrida om nyckeln snabbt ett par ggr. Annars om man levererar 12v för länge med fel kan det sluta illa kanske. Också ganska vanligt att någon har byggt om elen på sitt sätt :).

[@BackmansGarage]

Man kan ju alltid lägga en säkring emellan till en början om man känner sig osäker :)

[@crazyfrog4000]

buy a smaller heater core/race or rally core i think its called, i am going to do that on my 960 t5 because the old huge thing is removed and the harrness is behind the dash😅

[@juhanikorja8266]

Connector for air compressor? That black mystery connector. My -89 740 has air compressor on left side, right on that position.

[@BackmansGarage]

Could be i guess 😀 Im gonna have to look that up 👍

[@JakeSullyAT]

Very nice Video, if i will have some trouble with my 740 i alway can backup on your video ;))

[@BackmansGarage]

When i can, I try to make the videos that I wished that I could have found on KZbin. It takes me to some unusual places sometimes.

[@evgeniperminov9106]

ya, it is very big work. you are Crazy men. mad work to 1 . best regards

[@BackmansGarage]

Haha, Thanks :)

[@troyward8349]

Is there a resource around that will tells me the length of the wires in the different sections? I would like to build all new wiring harnesses/cables for a 91 240 sedan.

[@BackmansGarage]

Probably, but not in any manual that i have unfoutunantly.

[@henrikjonsson4340]

ignition module 14:16

[@MickeyMishra]

That sure does not sound like google translate version. It says: Tändningsmodul. When he says it, it sound like "Tends slus stlig" ? well, that's what it sounds like when I heard it. Took me a bit to find what he was saying, But I knew it was some kind of ignition module. Thanks BTW!

[@theworldwelivein482]

I have Volvo V70 2004, Passenger headlight is unplugged. How do I plug back in?

[@alfistialfisti1072]

congratulations

[@radzikalyubi1319]

Hai sir.. If you dont mind.. may i ask you about elec.wiring on my volvo 940 1995. The defected that i facing was, when engine running all electrical component such as wiper, AC blower, signal lamp, front/break light, power window & etc not functioning at all. But if i shutdown the engine and just switched on at the ignition key without running engine, all the components that i mention before is functiong well. I hope you can advices something to me for troubleshooting. Really appreciate. Tq

[@BackmansGarage]

Sounds like a realay issue or maybe something with the ignition lock maybe? I would try to trace it backwards starting with checking the shared supply/ground points of some of those components affected. But it's allways difficult to fault trace something online.

[@josesomoza9199]

Hola amigo tengo un volvo 940 motor 2.3L modelo B230F y tiene falla de que cascabelea o pistonea muy fuerte cuando aplico la palanca de cambios a D o a la posición R y queda en marcha lenta suena golpeteo pistones que puede ser este fallo. Ya reemplace bomba gasolina filtros todos bujias cables e inclusive se le cambio nueva la correa de distribución y hace igual fallo. Me puedes ayudar gracias

[@nuputtrada8533]

Hey backman! if you're going to remove the heatercore package i'd love to buy it, im located in norway and need it in my Volvo 760 that im t5 swapping :)

[@BackmansGarage]

Absolutely, but I might need a few parts off of it because i will still need some form of heater in order to pass MOT. But it will be a much smaller one with heat just to the windscreen. So i might take the in/out fittings in the firewall and the heater valve. But send me a message on insta if you have that so I can keep track of you :) //Backman

[@nuputtrada8533]

@@BackmansGarage yeah i sent you a message, i wont be needing the in and out fittings nor the heatervalve, ill be replacing those parts anyway, i’ve got the ac version in my car and i dont want ac :) its got a «automatic heating control» panel aswell and i want the old sliding version which you’ve got :)

[@claudenobles779]

WoW 💪

[@jacobaugustrisom590]

11:04 tror det är centrallåset

[@BackmansGarage]

De kan det nog vara! 👍 Får kolla upp det i boken å se om jag kan hitta nått om det. Knepigt att en 90 inte hade c-lås, trodde det blev standard tidigare, men det kanske det aldrig blev 🤔

[@pakpak-cb2eg]

good jb

[@junky6109]

asså ja må va trög men jag får inte lös säkringsdosan hur lyckas man

[@BackmansGarage]

Tror det är två flärpar man ska bända utåt samtidigt så glider den ut.