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Wiring my CB550F2 from 1978

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alexdecker:
Alright, continuing my ongoing theme of being a complete idiot and newbie, I was following a F1 diagram, not F2. How do I know if my model is a UK or a German or something else model?

alexdecker:
Ok, wired things up according to the correct diagram. Two things:

I have three wires coming out of the Start button. Yellow/red, Black and another Black/Red. No idea what that is. The other Black/Red from the Headlight is already connected.

I also have four wires coming out of the taillight, but can’t find any fourth wire on any diagram. It is black.

Any ideas?

Bryanj:
Parts book will tel you what model vin numbers went to which country.
You dont get brown/white from switch.
Black to start button is power
Black to kill switch power
Black to light switch power

Yellow/red sends power to solenoid when button pressed
Black/white sends power to coils when kill switch on

Now you need to sort the 2 other wires from lights switch, one will connect to the black when in P, this goes to brown Other connects in main or H and goes to the ip switch supply on lh switch

Hope that helps

And that rh switch doesnt need to be grounded as it supplies power to solenoid

Bryanj:
Black red on rh switch is for yanks with no lights on off, it feeds the fusebox main fuse then headlamp and disconnects headlamp when starter button pushed.
Rear light should have
Brown
Green/yellow
Green
Black usually has a coloured ring and is indicator

alexdecker:

--- Quote from: Bryanj on July 25, 2022, 05:12:33 PM ---Black red on rh switch is for yanks with no lights on off, it feeds the fusebox main fuse then headlamp and disconnects headlamp when starter button pushed.
Rear light should have
Brown
Green/yellow
Green
Black usually has a coloured ring and is indicator

--- End quote ---

Thank you! Weird that the black taillight wire is not on the diagram. Previous owner had put it into the double green GROUND connection back there.

And thank you for all the clear explanations! I will leave the Black/Red from Start button unconnected, and go on to connect the gauges and headlight!

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