Author Topic: CB400F wiring diagram  (Read 1707 times)

Offline mattsz

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CB400F wiring diagram
« on: January 11, 2019, 09:18:11 PM »
EDIT (1/17/2019): The UK diagram is available.  Skip the boring build-up:

http://www.sohc.co.uk/index.php/topic,17969.msg156361.html#msg156361


EDIT (9/16/2019): I added the USA diagram to the same post above.  There have been a couple of questions about it, and I know some USA bikes end up in the UK anyway, so why not?

I've been foxtrotting with a few guys over on the US group about the wiring diagram for my bike, and the potential errors it has - or at least the things about it that confuse me.  In my "spare" time I've been working on creating a color version of it.  I know there's a few around already, but none has quite the detail I'd like to see for the USA models.  What I've done is basically recreated the diagram I found in the copy of the factory service manual that's posted in the "Aladdin's Cave" area of this forum.  Since working with that one, I've found other versions, but I've already invested enough in that one, so that's the one I'm committed to (see the first attached file).

I'm still working out the bugs in my version, but I've included a "small" sample of what it looks like (second attached file) - the full version is a high resolution pdf file, for screen viewing or for printing on (ideally) A3 (US 11" x 17") paper.

I have a similarly laid out UK model diagram; there's some minor differences which most of you know about.  My question is, would anyone be interested in a similar large-format diagram for the UK model?  It wouldn't be too difficult to do - just a question of whether anyone likes this particular layout...
« Last Edit: September 16, 2019, 11:37:03 AM by mattsz »

Offline taysidedragon

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Re: CB400F wiring diagram
« Reply #1 on: January 11, 2019, 11:27:01 PM »
That's nicely done. I would like to see a UK version.
Nice and clear. 👍
Gareth

1977 CB400F
1965 T100SS

Offline Andych

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Re: CB400F wiring diagram
« Reply #2 on: January 12, 2019, 12:01:08 AM »
That is brilliant and really easy to follow.. I would like to see a UK version too.. the Aussie delivered bikes are pretty much the UK version.
1975 CB400 - Project
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Offline mattsz

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Re: CB400F wiring diagram
« Reply #3 on: January 12, 2019, 01:16:15 AM »
Twist my arm...  ;)

stay tuned!

Offline SteveD CB500K0

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Re: CB400F wiring diagram
« Reply #4 on: January 12, 2019, 07:40:38 AM »
If you have a hi-res pdf, could I have a copy for Aladdin’s Cave?

Steve


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Offline mattsz

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Re: CB400F wiring diagram
« Reply #5 on: January 12, 2019, 09:16:39 AM »
If you have a hi-res pdf, could I have a copy for Aladdin’s Cave?

Steve

Absolutely!  Once I'm sure I haven't make any mistakes, I'll offer it for general consumption.  Then, hopefully at least one other person will look it over and point out whatever mistakes I was sure I hadn't made but did.  Then we're off to the races...

Offline Laverda Dave

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Re: CB400F wiring diagram
« Reply #6 on: January 12, 2019, 02:40:31 PM »
That's excellent work Matt. I second a UK version, a lot easier to read.
1976 Honda 400/4
1977 Rickman Honda CR750
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1978 Moto Morini 350 Sport
1978 Honda CB400/4 'Rat' bike
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Offline mattsz

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Re: CB400F wiring diagram
« Reply #7 on: January 12, 2019, 03:07:54 PM »
That's excellent work Matt. I second a UK version, a lot easier to read.

Already in the works...

Online Orcade-Ian

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Re: CB400F wiring diagram
« Reply #8 on: January 12, 2019, 03:59:15 PM »
That’s wonderful work and far easier to fault find with all the colours visible.  One of my 400’s is a very early US spec but I’ve more or less changed stuff for UK.  I know it can be easy to confuse colours on very old wiring so this will help considerably.
As I was writing this, the name Bob Newhart (a US comedian) sprang to mind.  He did a great take about an unexploded bomb and not mixing up wires.

https://m.youtube.com/watch?v=ArMf6xbMsLI

Ian

Offline mattsz

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Re: CB400F wiring diagram
« Reply #9 on: January 13, 2019, 11:55:28 PM »
As I was writing this, the name Bob Newhart (a US comedian) sprang to mind.  He did a great take about an unexploded bomb and not mixing up wires.

https://m.youtube.com/watch?v=ArMf6xbMsLI

Ian

I'll give it a listen, Ian, thanks!  I do like Bob Newhart; I see that one goes back aways...

Offline mattsz

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Re: CB400F wiring diagram
« Reply #10 on: January 14, 2019, 12:30:31 AM »
What years are represented by the diagrams in these manuals?  My copy of the shop manual says '72 CB350F, and I believe '77 was the last year for this version of the CB400F?  I'd like to know how to label my version...

Offline Sprocket

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Re: CB400F wiring diagram
« Reply #11 on: January 14, 2019, 08:21:52 AM »
Good work that man! Having stripped my old main loom last night to prepare to rob bits off it to make the missing rear light loom, I can identify with the Haynes book diagrams being a bit fiddly to read.

Offline mattsz

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Re: CB400F wiring diagram
« Reply #12 on: January 14, 2019, 09:17:01 AM »
I'm thinking I'd like to get some feedback about errors before I post anything here in public - anyone willing to look over my "draft" version while I sort out the years in question?

Offline taysidedragon

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Re: CB400F wiring diagram
« Reply #13 on: January 14, 2019, 10:55:36 AM »
I'm thinking I'd like to get some feedback about errors before I post anything here in public - anyone willing to look over my "draft" version while I sort out the years in question?

I'm not an expert electrician but I know my way around a wiring diagram. I'll check your draft version for you if it helps. 👍
Gareth

1977 CB400F
1965 T100SS

Online Bryanj

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Re: CB400F wiring diagram
« Reply #14 on: January 14, 2019, 12:17:46 PM »
Email it me direct and i will print it out and compare if you wish.

 

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