Headlight Bucket Wiring on a Vintage Honda Motorcycle
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- Опубликовано: 10 июл 2024
- Check out our full electrical troubleshooting playlist: • Electrical
Intimidation is a big factor when working on a vintage Honda Motorcycle. In this video, we show how simple repairs can be on a vintage Honda by demystifying the infamous "Bird's Nest" of wires. Every Honda motorcycle from the late '60s to the late '70s has a major junction of wires that connect parts light handlebar switches, gauges, and turn signals to the main wiring harness. On some motorcycles, this happens inside the headlight bucket and on others under the gas tank, but the effect is the same. Staring are such a large clump of wires can be intimidating but by peeling back the layers and removing the headlight bucket, there are actually only a few bundles of wires. Follow along as we sort through the wires and call out commonly used Honda wire color codes and what they are used for.
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Need help with your vintage Honda? Attend the CMC Repair Academy and watch the full playlist of repair videos for your motorcycle:
• CB175/CL175/SL175/CB20...
• CB350/CL350/SL350
• CB360/CL360
• CB450/CL450/CB500t
• CB550 / CB500F
• CB750
• CB350F / CB400F
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Contents of this video:
00:00 - Introduction
00:50 - What is the Bird's Nest?
01:49 - Why unplug everything?
03:38 - Removing the headlight bucket
03:52 - Facts about the Honda factory headlight buckets
04:50 - Identifying the groups of wires in the Bird's Nest
07:53 - Main Harness wires
11:52 - Left Handlebar switch wires
12:54 - Right Handlebar switch wires
16:00 - Speedometer wires
17:02 - Tachometer / Indicator Lights
18:29 - Front Brake light switch wires
19:27 - Turn Signal wires
20:45 - Identifying unused wiring connections
21:50 - Putting the headlight back together
22:59 - Precautions
23:31 - Summary
24:08 - Wrap up 
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CMC is the standard for learning on vintage Honda’s- they’ve taught me that diagnosis and troubleshooting your vintage Honda is not a wall stopping you but a hill to be climbed…And its great to stand on top of that hill with your engine ticking! Thanks guys!
Brenden is right on the mark about the fear and loathing folk like me feel when being forced to mess with a bike’s wiring, especially the accursed headlight bucket junctions. I’m recommissioning a ‘71 CB500 four and had no choice but to start disconnecting stuff when I realised the left and right hand controls would need to be replaced.
I spent as much time with pen and paper documenting what connected to what and labelling connections as I did with a spanner / screwdriver. Which wasn’t time wasted since the colour coding on one of the new controls isn’t as per the model’s wiring diagram.
Watching this video multiple times gives me just enough confidence to start connecting everything when the forks come back form the hard-chromers and I get a new top forkbridge,
So another huge Thank You to Brenden and the other Common Motor folk for helping me out, just as you did with your tail light circuit and back brake etc videos.
I worked at a Honda dealer in the 70s. After school I would assemble bikes out of the crates. The bars an turn signals were not connected, so I had to wire them up. DANG, they were real easy to do when the wires were nice and soft.
Good video.
This was great, I was looking cross eyed at the angel hair pasta of wires on my 1982 Sabre
This is what everyone needed. No sarcasm. No irony.
Excellent video, as they all are, very informative and helpful. Thank you.
I’m restoring my 1973 XL175 and this video demystified the mess in the bucket. Thank you!
Thank you for this very nice video,I salute you Brendan,one of the smartest motorcycle blogger,you are really helping lots of bikers that dont know much about bikes like me lol"take care.....
I added ground wires to my directionals, I thought factory was a little weak. I love my new LED headlight too. THANKS to all at CM!
Looking forward to taking mine apart to fix my horn issue today, hopefully, on my 1979 Honda Express.
A valuable screenshot at 11:35
I am currently restoring a CB250 k4, and this video has helped me so much and taken all the fear out of connecting the wires back together again.
Great work 👏👏
Great tutorial...thanks so much
Very nice video. As in my project, all of that birds nest still looks like heXX! And with myT120, I would like a much bigger headlite bucket to at least STUFF the wiring into….
Thank you from the UK
Dang man! You are great for doing all this for us.
Good video! I love the vintage Bikes, the simplistic design and ease of diagnostic repairs! I've totally rewired a couple old XJ650's, such a pleasure.
this is the most valuable video on youtube
Glad this video exists🦇✨️ I already had to go through the trouble of teaching myself where all the wires go with a diagram, but this visual aid is sure to be incredibly helpful for people 🌱
I thankyou so much for doing that video . I have tried to follow wiring diagrams ,but my brain wont work that way . Having it shown i can follow your lead . Its not that im lazy to follow diagram my brain just does not compute .
Im sure i can sort out my headlight bucket , and get back on track . Once again thankyou .
You make it look so easy.❤
Thanks Guys- Making working on my bike so much easier!
Finally a quality video of the cb wiring! The lords blessing
Great instruction. You the monster! 👏
Excellent. Thank you. Great knowledge.
Your. Ideology are great thx
This was extremely helpful🎉
This may have been the most helpful video Ive ever seen on youtube. Thank you so much!
I am really glad that I found your channel. I am probably about to buy a '75 CB550F. I will undoubtedly be ordering some parts and tools from you once I have a better idea of what the bike needs. All of your videos are extremely helpful!
Very helpful and informative as usual. The new special effects (audio and visual) were especially nice! 😂
Wow great on explaining...have a 79 Honda 175 ...still got a lot to do there..got it running 2 years ago
I just rewired a CB350 with a harness it didn't have one .
I got it running today thanks for your videos
although initially this gave me extreme anxiety watching you blindly unplug everything, you cleared up sooo much confusion for me. cant wait to do this on my XL175 thanks a ton for the video
Very instructive and helpful . Good job . I`m currently reviving a GL 400 79 model a lot applies .
Awesome vid! Thanks
Great stuff y’all! I wish there was a video on how to swap the wiring for LED buckets and lights. Especially with the diode… I’m still unable to get all the lights to work right
Thanks mate
Big help 😀👍
I require a rectifier and regulator that's joined together as one for my 1971 Honda CB 175 to upgrade it where can I get one and how much are they thanks Phil
Nice job :)
Hi there can you please make video on 1975 Honda CB750k front Headlight Bucket Wiring Harness connectivity. Thank you 😊
I have a 1980 gl1100 that had a fairing and I’m just going to have the head light and leaving the fairing off but it seems like there’s too many wires to fit in the bucket, I might do like you did and take all the wires off and start from scratch, thanks for the video
Thx Brenden great tutorial and had put me at ease. I have a 73 CB200. What is the purpose of the Stata mod and can I apply it to my bike? 👍
Very good, clean video for newbies like me! Thank you for your work! Did you ever consider work with smaller Honda Twins like CB125T or are they not popular in the US?
We've messed with a few but we don't fully support them yet. We will get there one of these days.
Great set of videos on vintage bikes. If you are able... need some help on a C90 cub. 86 vintage, 12v and CDI system. There's a white wire with a black line that starts from the 3 pin regulator and heads to the headlight high/low beam part. Any idea what the purpose of this wire? I've upgraded to a 4 pin newer reg/rec unit and kept this wire disconnected. My headlights don't work although AC supply reach the yellow wire in the light switch(bottom half, for P and Headlight). This white the black line has been an absolute enigma to me. Can't seem to figure out it's purpose and how the light circuit work.
Thanks for this video CMC! Super helpful. I was wondering if y’all had any luck with an LED headlight alternative for the SL/CL 175 and the SL350? These models have the smaller 5 1/4” headlights and LED would be much better for safety reasons. Thanks!
definitely working on a solution! That one is at the top of our priority list.
Did that once. Disconnected everything without marking it "I'll just remember it"..
Right. Took a month in my spare time to put it all back and working. Never again.
Should the white/yellow mod be done if using a new reg/rectifier single unit?
What about the models that have the headlight controls on the left control box.
I got a 6 wire right hand bar switch
I have a 1973 Honda CB 200 I bought a right bar hand switch for the headlights, dimmer and old stuff, but mine mine was a 9 water set app and then when I got so many 6 water set up. How do I get it to work for my bike?
All these wires in the headlight bucket seems to be weird. But it's very clever actually, because it's always warm and dry there.
Are we using left and right lookiing from infront of headlight . Or from sitting on bike ,????????
Just went through mine (successfully!) yesterday. CL100-- its all in the bucket. Do you have a resource for good quality bullet terminals? I wound up going to my local scooter shop after finding nothing but pretty low quality replacement options, none of which actually "fit" "correctly"
We actually sell the great made-in-Japan hero brand bullet connectors on the website. Awesome connectors, just make sure you have a good pair of bullet connector crimps to install them. Thats the key.
I'm trying to sort out a k5 . And it's my 3rd day a bit at a time
Now I only have 1 white wire that is headlight .a big black triple plug ,if it was for indicators would it b same on other side. I have a feeling when I get to turn key on . I'm going to have a multiple component meltdown .
Well now I'm fkd. 20 wires in the loom . 31 wires to find a partner for.
I have to thank the parts supplier for supplying wrong hand controls. Now I guess il have to buy another set
When your in NZ 2SETS IS DAMM EXPENSIVE.
I have green/yellow stripe with a black coming from coils pigtail .that is the only green/yellow i have.
I dont know why the wiring wont match up
I should have taken more notice when unplugging , but I was hoping it would be straight forward. This bike has been a jinx . In 2 years I've done many 20 k . I'm a verry impulsive guy . I know a cliff it can fly off.
The infamous nest.
I wish I didnt disconnect my wires . Still no headway after 4 days .
It's all fairly self explanatory, until you get an aftermarket switch that's not 100 percent correct as far as the colors go. In that case, you break out the multimeter.
Too bad this isn't for an '81 CB...