Topic: Headlight connections query

[1977_cb550k]

Had to replace my ignition switch plastic thingy, and so inspected my headlight while I was at it. I noticed the blue, orange and black wires are not connected (but everything has been working). Does anyone know what these wires do?

[bryanj]

Do the blue and orange have a white stripe? If so they are the front running lights in front blinkers, black is a power to something as its a male connector

[1977_cb550k]

Thanks, yes white stripes. I don’t have running lights in blinkers (I’m in Australia). 

Wonder what that black fella goes to?

[bryanj]

Where does it go into, a switch or loom?

Dont forget answer times may vary, you are just about as far away as possible from me!!!

[1977_cb550k]

Goes into a loom by the looks of it. 

[bryanj]

Is it the loom to the idiot light panel, other possibility is front brake light switch, what other wire colours are in the same loom

[1977_cb550k]

These appear to be for the indicator buzzer which is not connected.

[bryanj]

Dont remember the buzzer having a 12v supply, but then you dont see many and never on a 500

[Deltarider]

Dont remember the buzzer having a 12v supply, but then you dont see many and never on a 500

The CB500K2 [-ED, -F, -G]* had them.
* Also know (@ CMSNL) as CB500K2 GENERAL EXPORT.

[1977_cb550k]

My bike is a 550 k3. (USA model)

[bryanj]

In that case yes it did but still did not have a power feed wire

[Deltarider]

My bike is a 550 k3. (USA model)

The wiring diagram for your model is on p.182 in the K3 Addendum of the Shop Manual Honda CB500-550: http://manuals.sohc4.net/cb500/service_manual/HSM500550_16.pdf