SOHC.co.uk Forums > CB350/400
CB400F wiring diagram
mattsz:
--- Quote from: Bryanj on January 16, 2019, 11:46:51 AM ---In Uk the dip beam has aim lower so as not to dazzle oncoming vehicles and cars plus more modern bikes have to have a defined "cut off" pattern that aims left, to the sidewalk, as well.
--- End quote ---
Of course - it's the same here, except the light pattern favors the right side. But the lights I've seen all have a brighter (higher-wattage) filament for the high beam...
Bryanj:
A lot do but the 400 has what is best described as a "marginal" charging system and only charges at over 3,000 revs so the less load the better which is the main reason i do not like the US idea of no lights off switch, you are draining the battery as soon as you turn the key.
mattsz:
Well, the sooner it goes public, the sooner more errors will be spotted!
Here's my disclaimer...
I think the color scheme is obvious - primary color solid line, secondary color (where used) dashed line overlaid. Black dots for connection nodes.
I did take a few liberties with the original: almost all of the wire layouts match, with just a few adjustments for where I had to reposition a few components, or for clarity. I think I went with the UK diagram word choices. Some of the component designs are different, as I used some from a diagram I made for another bike, but I think there won't be any confusion there.
A further note about viewing and printing... I don't have a great printer, and it can only take up to our "standard" letter size paper widths (8.5"). So, it was always my intention to outsource a decent 11"x17" printout. My local Staples (office supply store) provides an inexpensive (less than a dollar), excellent quality, water-proof ink-jet print on this large size paper - very close, I believe, to your A3 size. The whole thing should be easily resized to fit on whatever paper size is close (or, just stick with the computer screen!). You may notice a couple of striped wires shown slightly thicker than others - this, and the color choices themselves, were a compromise to best benefit the appearance and contrast on the computer screen and on this "commercial" printed page. I hope they're ok if you try to print at home!
It's a PDF file - as for the source document, I've been using a Mac-based program called EazyDraw for a long time, which I think doesn't play very well with other drawing programs.
I'm working on some secondary diagrams which show various systems in isolation; eventually I may make those available as well, as a collection. Something to pass the time...
I'll attach the file to this post, but just in case, here's a dropbox link to it as well...
https://www.dropbox.com/s/bjm0hcigcjzsfku/1977%20CB400F%20UK%20Master%20Diagram.pdf?dl=0
PS: Steve, I don't see why you can't drop a copy into Aladdin's Cave - if I discover any changes need to be made, I'll make them and let you know...
EDIT: Just for giggles, I've added the USA version - I know some USA bikes end up over there in the UK, so why not? There are a few differences! PDF attached at the bottom of this post, but here's a dropbox link:
https://www.dropbox.com/s/3p9uspbu4u7830y/1977%20CB400F%20USA-Canada%20Master%20Diagram.pdf?dl=0
taysidedragon:
Thanks for producing this Matt. I'm going to print a large copy and it will be my go to wiring diagram from now on. 👍
mattsz:
--- Quote from: taysidedragon on January 18, 2019, 10:37:25 AM ---Thanks for producing this Matt. I'm going to print a large copy and it will be my go to wiring diagram from now on. 👍
--- End quote ---
Thank you for helping me fix it!
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