Unconnected green wire near fuse block

[mattsz]

Well you did ask the question on the UK site not the US one

Naturally... the UK site is much better!

(Shhh, don't tell the US guys I said so!)

[mattsz]

All I saw was USA 400 and assumed it was an import as why would a yank be posting on a uk forum when they have their own.

See my previous post... 

[Bryanj]

I'm on both and agree

[mattsz]

Your most likely a long lost cousin Matt so I suppose we’ll tolerate you 

The main reason I'm here!  Any place that tolerates me is a winner in my book...

[Lobo]

Happy to be corrected, but 3 pin (ie earthed) flasher relays are electro-mechanical (or ‘thermal’) types, and the 2 pin versions, solid state.
Q - were solid state relays common in the mid 70s; I’d have thought not and that all bikes of that era had the 3 pin flasher relays? Given the latter are very mechanical do-dahs, they do wear out and eventually need replacing... often with modern 2 pin units.

Secondly, why would Honda go to the bother of supplying 2 different relays; there’d have been a $ difference in the two types and surely they’d go the cheaper version?

This all said, I can’t get my head around some 400F differences, eg the near Europe F2s loop footrests, whilst rest-of-the-world retained the swing arm mounted ‘pegs. Also, the RoTW ignition steering lock, whilst Europe retained the unfriendly bottom yolk lock. (both the above represent Frame differences, which I guess, significant)

Other differences - eg tank cap / flap, horn mounting - I get given local safety regs....

[Bryanj]

You got the flashers the wrong way round, 2 wire is thermal strip and 3 is a more mechanical.
Differences is down mostly to the US vehicle regs similar to our construction and use regs plus insurance compy requirements, learner laws etc

[AshimotoK0]

3-Wire types had a capacitor which is formed in the end of the aluminium case and used capacitance discharge principle to provide the timing for the electro-mechanical relay inside the can as well. Every 60's/70's UK Honda bike I own/ have owned, has/had  this type of flasher unit fitted as standard. The USA bikes were fitted with a 'Signal-Stat' type, which is two wire and uses a bi-metallic strip rather than the capacitance discharge principle (like the old Lucas unit used in old British cars, like the Mini). I have seen a few later style 3-wire types, which have a separate, conventional, electrolytic capacitor inside, mounted on a small printed circuit board.

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