SOHC.co.uk Forums > CB350/400

Unconnected green wire near fuse block

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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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