The Ultimate Engine Wiring Starter Guide.

Use DAHM50 for $50 bucks off their courses. This isnt sponsored I just support what they do for the community.
I cover things involved with making different car harnesses. I get so many questions about how my ugly cheap harnesses work so well. I’m just sharing what works for me with reasonable cost.

00:00 Intro
00:56 Stock Wiring
01:33 Cheap Harness
03:24 Ultimate Harness
03:44 DR 25 Heat Shrink
04:53 Tefzel Wire
09:11 Quick Planning
13:07 The MOST Important Wire
20:07 Tools I use
27:55 Concentric Twisting
33:19 Splicing
38:53 Second Layer
45:53 Heat Shrink
47:58 Heat Gun
52:13 Third Layer
54:30 Filler Wire
1:02:55 Joints
1:06:56 Engine Sensors and Injector Wiring
1:19:12 Labeling
1:20:18 ECU Pinning
1:34:00 Epoxy and Booting
1:41:14 Cost Breakdown

[hpa]

Great video Rob! Awesome to see you diving into and loving the challenge of motorsport wiring and we're stoked to watch and be part of the journey 😎 - Taz.

[drfirebug]

It's a wonderful thing when someone takes hours out of their life just to help to educate others on important topics like this. This is what pushes humanity forward, thank you Rob!

[ericrobinson]

FYI from someone who has built a few concentric harnesses: the part that Rob puts on timelapse (pedantic fussing about and combing wires) is easily 50% of the actual build time. The actual build time should be less than 1/3rd of your planning time.

[joealex]

WOH! 1 hour and 45 minutes of Daddy Dahm doing wiring?! Christmas came early boy! 😂

[Aiello_]

true character development, Rob overcame his weakness and is never going to be bullied about messy wiring again
and great video! i learned alot

[ruckus]

good rule of thumb, always pull your tape across the wires in the same way you twist them, it will help them retain their tightness. and as you pull the tape the adhesive will in turn pull them tight as well

[davidblalock]

Useful content is always more needed that pure entertainment content. This is useful content.

[PaddyQuiggin]

Rob goes feature length - the movie we've all been waiting for! Shame it's not a feature length build of the 6 rotor but I'll take what I can get.

[matthewparker]

I build a bunch of dev harnesses, and absolutely love Graingers self fusing tape: (not sponsored, just a fan of the tape) Tapes PN: 32XV31

It has a -130f-500f heat range, works as a great heatshrink substitute and can cover wire breakouts. It can also be used for a emergency fluid leak coverer.
We use it on rocket engines and I imagine it would work for a Rotary Rocket

[JustKyzuuh]

Rob get a Steinel heat gun! Dr25 needs a good bit of heat to shrink fully and most of your crappy heat guns just don't cut it!

[DracoRemixer]

When daddy leaves you for twelve day but comes back with an almost two hour long video, then you know it will be good

[fryreartechnology]

It is so impressive how much you have learned and pushed yourself to do, to buy, fight for, and just simple come up with how to do it yourself. As an industrial electrician I respect this because I can have cables with 50+ wires that have to be custom built like this besides all black and 1 green lol. Great job!

[HNU]

Never thought I’d watch 1 hour 46 minutes Rob Dahm thought process of how to do decent wiring… but here I am finishing it up…

[ThatRacingChannel]

Loved it from start to finish, great job brother! 🤘🏻

[aidan_sp]

This is the video the internet has been asking for since it was invented <3

[minasourial]

This is one of those videos that might not reach a bigger audience but is super appreciated by those who do watch. Thanks Rob!

[exportedafrican]

Great video! Learned a lot of this from hp academy and it’s great to see it made available.

Only thing I recommend is a dedicated branch of fill wires rather than cutting them. I’ve been surprised how often I’ve needed “just one more” and is quick and easy to cut the heat shrink cap and use a wire.

[CAB]

for those heat shrink boots you did on the connectors, shrink down the bigger outer heat shrink first, then put the smaller heat shrink over the shrunk end.

[jefersonisidoro]

When I rewire mine. I've done it in a wood board with bunch of nails looking a grid line. . Heat gun really helps in bending or pointing the wire in a direction you want.

[drewanderson]

I want to tell you rob. I watched the entire video twice. I thoroughly enjoyed this. I absolutely love any kind of wiring. Either being house wiring or automotive wiring. Iv never made a harness like this. Iv made small go kart, mini bike, drift trike harnesses. With lights electric ignition and charging coils. I'm OCD bad. And the distance you went to make it weather and oil proof was amazing. I could watch this again. I just love wiring! I learned so many new techniques. Saw new tools iv not seen before. Just a great in depth video. Thanks for sharing! Very inspiring rob!!! Great work!