Making a CUSTOM engine harness from SCRATCH!! (Full process)

I am using the Link G4X Monsoon ECU + harness
www.linkecu.com/products/wire...
www.evasivemotorsports.com/st...
I got all new OEM style connectors at:
www.wiringspecialties.com/con...
ShopJimmyO.com
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/ jimmyoakes
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Jimmy Oakes
PMB 169
61 N. Plains Industrial Rd.
Wallingford, CT 06492

[@-gnicE-]

Most youtubers talk about working on their cars and pay someone else to do it. Jimmy makes his own shit from scratch and when he does have to get it made he helps the entire time with the project. Mad respect, keep doing what your doing.

[@ChannelPineappleSon]

He just soaks up information. Gotta get him welding though! Taylor Ray is very similar in his work ethic.

[@emilydaniel5494]

@@ChannelPineappleSon it's why I love this channel! LZ is nice for vanity stuff, but I feel like I learn more here.

[@mathewross-brooks5164]

Dude is a real car enthusiast

[@emilydaniel5494]

@@mathewross-brooks5164 he just has a natural curiosity, which is sadly rare these days

[@danharper726]

This! This is what makes me him so great and separates him from the rest. 🤘🏻

[@fortniteweatherchannel]

As a programmer who spends all day sitting in front of a computer I envy RJs posture so much.

[@rjay_az]

I try really really hard to make sure that i sit up straight as much as possible

[@BigBlockCaprice]

Same here lol

[@fortniteweatherchannel]

@@rjay_az made sure to sit up extra straight today, hopefully it's not too late to improve my posture

[@JesseGayvoronski]

@@fortniteweatherchannel never too late baby, stick with it!

[@zachmonk8041]

it’s insane how much a few heavy deadlifts a few times a week helped with my posture

[@onemanzu]

“Are you proud of it? Because I wouldn’t be” 😂😂😂

[@caseyjones8114]

These have been my favorite videos. I remember the one you made in your basement. Thanks for the "boring technical" stuff! The Oakes Garage is my favorite on youtube.

[@gokartsRfun]

This is the kind of shit people pay big money for. Thank you Jimmy

[@SendingStache]

one aspect of the car hobby i just can't deal with is electric work. blows my mind how good you are at this stuff. love watching this content!

[@aniballopez2250]

U killed it on the harness great job & I just got my break hearts not ring lands shirt fit is on point

[@WillPark98]

As a PLC programmer, at the start of the video you pretty much explained everything they taught me at college about inputs, outputs and logic controllers.

[@fb.9292]

Add wire calculations and he would go full professor Oakes

[@POWELL716]

Nice to see I'm not the only one in that profession who likes cars!

[@PokeSerafim]

Your wearing my shirt bro 😊😊😊 I got new ones on coming soon ima send you

[@ProModsPerformance]

Have to invest into quality crimpers and splice connections. Solder can fatigue and crack after exposed vibration. Motorsport wiring and OEM exclusively crimps for this (and a few other) reasons. Otherwise, looks good dude! Definitely no small undertaking.

[@littleleonard333]

Jimmy’s quality and attention to detail is one of the most underrated on KZbin.

[@nathanbennett9025]

Jimmy just in case you were wondering I freaking love wiring videos you seem to know what you're doing in wiring and I freaking love attention to detail on wiring harness

[@rGlockring]

This video was so dope! And I don’t even know anything about wiring, but man this video was sick and it looks so clean

[@Theromanticrejeck]

when the outro hits i feel like i can break through a brick wall lol "Im Mad cause i wanted you to knoooouoowwwww"

[@manbeezis]

Apology Note by Bonsai Trees. I found them from this channel and i love their music so much lol

[@jaadsbmx5403]

@@manbeezis same lol, now they're one of my favourite bands

[@jimc6481]

Awesome work Jimmy, appreciate you staying engaged with us during the harness build. I have way more confidence when I start toe build my F20C harness.....gosh you helped more than you know man, excellent work Jimmy, thank you.

[@TVSbro]

I think you're right with "pinning" because there's a tool called a de-pinner for removing wires from the connector in computers when you're resleeving your wires.

[@ctng37]

I love how in depth you went with this. I like working on my own cars but don't have the time or opportunity to build one of this caliber, yet. I love learning how and why things work the way they do, that's why I'm an engineer! Love these geeky/ nerdy vids!

[@zunnygarage495]

Awensome Video! Thinking About Restoreing The Whole Wireing Harness In My 200SX. This Is A Great Video That Can Inspire Others Who Dream Of Restoreing Their Car, Keep It Up!

[@erlendnilsen9647]

So satisfying watching the start and the end product! Impressive as hell! And all the content is fire! Never boring! 🤟

[@craze6813]

What makes a good youtuber? Someone that can entertain people even with stuff that's normally boring. You make wiring seem fun.

[@PedroCruz-nx6vq]

BRO.... LOVE this video!!! you did an amazing job for the first time. The description for how to make a harness is A1! I am starting to make harnesses and this 1 video helped me a lot !

[@theworksho3947]

I love watching this channel because I tend to learn things passively. When I'm working on my own cars, I'll run into trouble and realize, "wait! I've seen Jimmy and the gang deal with this before" and I can handle it. In this one, I ain't learning passively! I'm constantly rewinding, making sure I understand it all! Good stuff!!! I've said it before, I'll say it again: THIS IS THE BEST AUTOMOTIVE CHANNEL ON KZbin (and my favorite overall - the only channel I notice when there isn't an upload in a couple days haha)

[@ThejKilla]

I was excited for this video, but was even more excited when I saw (Full Process). I've considered doing this when I rebuild my KA in my s13. Great video man. Thank you!

[@ibrahimghani5605]

I am just lost when look jimmy hold that harness in the beginning. Respect to you Jimmy for finished it and hope it will work as you wanted. Cannot wait for the next video.

[@Ryan-sv2jl]

Every time lapse where you were working with the harness are seriously the most satisfying time lapse in your entire channel, the music choice is absolutely fantastic as well loved it

[@emilydaniel5494]

Thank you for making this! I always wondered how the ECU wiring works. Big props to you tackling this yourself! Future notice, easy loom is a thing. It's so handy!

[@affenjunge1615]

Jimmy, looming protips for ya bud. I couldn't tell from the video but the wire bundles should have a slight twist so the harness will be more compliant in positioning. Grab a butterknife or a metal spatula and heat it up to a dull red and use that to cut the woven loom to help keep it from fraying(you can buy a hot knife, but goodwill has butterknives for cheap and you already have a torch.). When you cut the loom, you want it to be expanded to around twice the diameter of it when it is fully pulled tight or at about the diameter to be slightly tight on the bundle. You can slide the uncut loom down the wire bundles and then back it off some to get the right length, that way you avoid discrepancies in length due to stretch you get from eye-balling or measuring and cutting off the bundle. For the final casing with the woven loom, the super sick pro way is to have the sub bundles cased beyond the separation point(so some of the sub-bundle casing is inside the main casing.) and use a fabric loom tape to hold it in place. You then slide the final casing on from the origin point(the ecu, main harness plug, etc.) all the way down, but do not cut it yet. Heatshrink the end of the outer casing at the point furthest from the origin. Then you work backwards with a pick to pull the sub-bundles through the outer casing, pushing the casing towards itself to expand it so you can slip the sub-bundles through the holes. After all the sub-bundles are pulled through, cut the origin end of the outer casing and heatshrink it in place. Cutting the origin end is easily done if you tape before the point you want to cut and then push the casing together to expand it and then scissors to cut. Finally heatstrink or fabric tape over the base of the sub-bundles as you did. Kind of a pain to do it like that and it takes a longer time but the results are super clean and durable. You did great for your first time just trying to figure it out yourself.

[@FUSION2897]

Super impressive the length jimmy goes to, to do everything the right way and on his own. I definitely see all the hard work he puts into his builds its crazy.

[@noahdboss1195]

I have never understood wiring until today. Ty

[@ffehhh8024]

I really love that you explained everything in detail and found it very interesting. Keep it up

[@alexandric8918]

Love the video man! As an electrical engineering major I love seeing this and how I can relate it to the real world, especially cars! Keep up the awesome work!😎

[@gavin4ford]

The loom job on that harness is perfection. 👌👌👌

[@AverageJoeBuilds]

I'm stoked because I'm going to link my SR in my coupe and this will be the biggest help since I'm scared to make my harness. Hella hype man, love your content so much!!!

[@CJ4A]

Thanks alot for this video. Explains looming and the joints quite well.

[@mariospantouvanos4645]

I actually really enjoy the technical videos. Keep it up Jimbo

[@Broyourenglishisgood]

7:27 “luv you” “get out.” 💀💀😂

[@HernandezMotorWorks]

Technical stuff is the best jimmy keep it up!!!!

[@darbymcbride41]

The power distribution advice is gold. Love that brother

[@LeninVera]

Yes!!! So stoked for this episode.

[@reecepsiew8532]

You made this so much simpler for us 💯

[@riprawc]

😮 This thing is a work of art, thank you for your time.

[@masongiles8443]

Great video y'all I appreciate this very much broke down the task I need to accomplish far more manageable and I appreciate it

[@mr.cangieter8758]

You have a very cool way of explaining things in simple terms.

[@kyleveach3238]

This is great, would love to see more really in depth tuning and wiring episodes.

[@sprm34kncell]

This is a good show for my OCD... So nice

[@suprvrmedia6235]

Man, I'm in the electronics dept of a formula student car, and this video helps a lot! Also, we use the link g4+ fury platform, so these vids are awesome. Keep doing this work man!

[@365havenotime]

Love the longer videos jimbo!!!! My lunch break go to!!

[@merlincantrell8546]

I really enjoy these, they allow me to casually learn about harnesses and systems I'm not used to

[@omgitskinzee]

Wiring videos definitely give me a bit of a chub. Awesome job Jimmy!

[@haddonassink7841]

Super informative, thanks Jimmy

[@xandak69]

Big moves! I cant wait to see this thing run again!

[@philpercival5522]

Love it, I can't wait to see this car moving again

[@gokartsRfun]

So questions: From a work flow perspective, did you find it easier to work by tool / process, or by individual connector? Like did you strip every wire, then solder everything that needed it, then crimp pins on the rest? Or did you finish prepping each wire before moving to the next? What was the amazon loom you used? Would you buy more of it? Did you tape the harness under the loom like some oems, or do you think it’s not necessary? Finally, would you make yourself a harness schematic, or do you think that’s unnecessary because you built the harness? I love this video, thanks man!

[@osrs_sui]

Bump

[@itsfqndave]

Bump

[@Nick_Tank]

Bump

[@oscardeltoro898]

Not to thread jack however I've found different techniques work differently depending on the resources you have. It can be difficult to source a NEW ECM connector with brand new pins. When I have not been able to source one I usually attach the wires to the ECM pins and sleeve it from the ECM towards the connectors. In the situation where a new ECM connector is available the easiest way is to measure your longest connector and either measure everything to lenght or terminate the sensors/switches first make the branches then leave the ECM connector for last, this way the hardest part which is wire placement is already done. You can terminate the ECM connector indoors comfortably.

[@adamwalsh5285]

To answer your questions get all your cables in place and to length solder if required cover all solder joints with two layers of heat shrink or one layer of adhesive lined heat shrink this stops the solder joint from bending and cracking. When it comes to the connectors crimp by tool as the wire strip lengths will be different. Use the manufacturers data sheet as a guide. I’m guessing jimmy used what looked like generic tools. The looming must be cut with a hot knife to fuse the ends which prevents fraying. Cheaper loom isn’t more likely to fray. An alternative you could use is spiral wrap or conduit. As for schematics just create a pin table meaning boost pump is on pins 17 and 18 just like jimmy did a schematic just isn’t needed as it’s just a diy project schematics are used to make manufacturers drawings and for electrical testing.

[@manbeezis]

Man this is a super super good video. Makin me feel all confident about wiring.

[@austinrothe4937]

I've been waiting for a wiring video like this for so long

[@sihatch670]

Great job Jimmy! Mad props!

[@carloszapien9296]

heres a tip i use when using mesh braided sleeving. get yourself a hot knife to cut the braided sleeve. it will keep it from fraying apart when you put in the wires. then add the adhesive glue lined heatshrink to the ends to keep it in place.

[@chadlunn6821]

Great vid. Wiring has scared me forever. I feel like I have a basis for starting a flying lead harness now. You get 1 subscribe.

[@tomcherlet4886]

Thanks a lot for all the intel, could really use it on my builds :) keep on grinding!

[@graveyfpv8089]

right on time Mr. Oakes, thanks...

[@anthonycurry6764]

Keeping it real and doing your own work, just like many of us watching would have to do with limited funds. You deserve way more than 287k subscribers that's for sure.

[@jdubbsvt85]

Awesome video. Super informative. Keep up the good work.

[@ImportWorx]

Wow that is some super clean loom work

[@JrgProductionsRSA]

I just did some repairs on my engine loom today , 30 years old and needs to be replaced with standalone management and a new loom XD

[@hextasy000]

that looks great man, awesome job!

[@Swaginabag24]

Digging the b roll music selection. Quite a vibe I must say :D

[@dvmfabworks7116]

You are a big hero to me Jimmy!

[@lozzahinks2133]

That looks like a really satisfying job 👌🏻 very tidy

[@Ieatpeople2]

i've modified a bunch of harnesses, and built a few from scratch. Its definitely intimidating at first (esp when you screw up, i almost burned my e30 down LOL), but practice makes perfect. and Jimmy is 100% correct, Wiring Specialties is the place to go for wiring, pins, and connectors.

[@MrSimulatedsanity]

Good shit as usual jimmy. keep em coming and dont worry about getting too technical and boring cause thats a big part of you and why we sub. We see you .We see what you doin!

[@WAWAWRKS]

Liked and saved, this video makes me feel much more comfortable about wiring 😂 love this !

[@dawsonbourquin6333]

Awesome love you jimmy and the gang

[@offgridas]

So dope seeing you use a New Zealand built ECU. I have a link g3 in my Subaru legacy, and my mates got a G4 in his AWD k24 ek civic.

[@lsx69]

Killing it Jimmy. Keep it up dude.

[@infinityfade692]

This video was awesome and insane job on the loom

[@pauljohnson5116]

I've been building a harness for a 84 d150 with a 3rd gen hemi I found nothing so watched this and a few others and got it going. Thank you. They sell nothing cheap for that swap

[@jsirius3783]

ive been stoked on this video since you mentioned it

[@SupraHenry]

This video is great. Now I have a little more info on building my JZ harness!

[@robertsuffecool6082]

Jimmy, great video. I have been trying to find a video where they ACTUALLY make a harness not just talk about it, but really show the process to get a grip of how big a task it REALLY is. Pinning is indeed what it is called. One thing that could have made the whole pinning process easier would be a better pin crimper. Those ones work but there are nicer ones where the head is 90 degrees to the handles and you just push it all together and its 1 singular crimp and has a pressure setting. Harness looks great. Keep up the great content man!

[@Fulcra]

Very cool! That actually looks interesting.

[@simonlundin496]

Looks great Jimbo!!

[@kohootah]

Well bet I didnt realize it was out already. Liked!!

[@kikeamonster]

Can't wait for the tuning aspect!!!

[@ady-bdavid1173]

Professor Oakes in the building!

[@randellgribben9772]

i just made my harness for a 2006 ecotec into my 1984 alfa romeo spider... this is a great way to do it... 1st make all your pigtails from the sensors.. keep the wires about 2 meters long... then from the ecu make the harness from there about .5 meter lay the sensors long.. then put the ecu where you want it to mount..... set each pigtail were you want it to route in the engine bay.. nice and clean... then overlap the ecu harness over the sensor pigtails.. clip even, solder and use a heat srink cover each solder connection.. then wrap the harness... does not take to much time and easy to do

[@patricklachance5380]

Good job man harness looks pro 😎

[@itshals8428]

Wicked vid Jimmy learnt so much! thankyou once again! 😄

[@dizzy_foxx]

This was actually really informative🙏🏼

[@ryanbyrd5.0]

To-do list= more content so that’s perfect. This is awesome, I’ve been waiting for some Z stuff too!

[@justinsapp9854]

I love Jimmy’s timelapses just for the music lol. Wish I knew what they are.

[@jack-fg9lr]

Love that this car is getting some love

[@d-listdrift343]

Awesome video very informative you did a great job I'm saving this video!

[@gstewartt]

You deserve a cool 1 million plus subs man. You are a badass.

[@kenikjou123]

dude respect for this !

[@FJ_Jonah]

I second Promods comment on investing in good crispers and connectors, I believe the crimps we use are similar to the Nissan OEM ones, also don’t recommend that loom, looks good but no heat protection, also populating the connector is the term you are looking for, but pinning does work too, keep up the good work Jimmy

[@solohour]

That was really useful, thank you Jimmy.

[@jaradrose9466]

i love wiring so much idk why but i love making harnesses

[@randomhero1797]

great job Jimmy this was a awesome video

[@DynamicEvolved]

The over lapping of the sleeve is a genius idea, wish I did that one mine. Looks sleek. Top tip is to plug it first before sleeving to test. It's a pain as you'll have to pin and then de-pin the connectors to then put sleeve on but it's better than tearing apart the look if there's a fault.

[@sonofguns1016]

Lol, “he said desired!” I’m subbed now