Topic: CB350F vs CB400F Wiring Harness

[Owned]

Ok.  So, I'm getting ready to tackle the wiring harness on my creation.  It's basically, the last step that's preventing me from finally hearing it run.  Forgive me if this sounds like an elementary question...

The bike as it sits is a 350F...sometime in the near future, it will become a 400F but we'll save that for later.  When I picked up the bike, the harness appeared to require a small amount of repair, coupla broken connections etc.  No biggie.  I also need to relocate a few of the battery box electrics under the seat...again, no biggie.

As I'm looking through the wiring diagrams, it appears the CB400F has a few differences in it's harness.  Looks to have 3 fuses (main, front and rear tail lights).  Also, clutch switch and a Silicon Diode.  Whereas, the CB350F only has one fuse (main). 

I would have assumed the 400 harness to be evolutionary in it's design...What's the Silicon Diode for?  (Is it so that you have to have the clutch pulled and in neutral?)  And, should I be thinking of adding the additional two fuses?

[thumpercat]

I am interested in your project. I currently have a 74 350F that I intend to put a 400F motor into. I haven't looked at all odf the details so I am eager to hear from you about any problems that this might create.

[A350- 4 me!]

Bringing back an old thread, did you get it all sorted out, was there any difference between the two motors?

[Owned]

Unfortunately, I've taken the slow route.  I promise to have pics up in the next couple of weeks!  My frame has just came back from powder coat and I'll be starting on the assembly very soon. 

When I last posted, I met another member (wingman) who was local, helped to keep me motivated.  He's since moved on to New Mexico.  Englishwheeler who has a 550 project here is another local friend who has gotten me back on track.

I'm certain this build will go smooth and look forward to the power change the 400 will provide.

[A350- 4 me!]

I am glad that they got you back on track!  I have too gotten a friend to rebuild his cb550.