Topic: Hearing an electrical buzzing sound in headlight bowl of wires

[JDrider]

1975 cb550K1
I'm troubleshooting the turn signal wiring and headlight.
The signals weren't working and the headlight would take 10 seconds to come on fully if it came on at all.
I finally found some dirty connectors in the ground wires and got both turn signals working BUT
sometimes when the turn signal was turned on, I could hear an electrical buzz (to the beat of the turn signal)
and then the right turn signal would come on.
No, its not the turn signal buzzer, that is removed.
Does this mean there is arcing of a wire somewhere?
Thanks,

[Don R]

 Anything arcing that much should burn a fuse, I'm at a loss to explain it with the buzzer removed. I had a boss tell me once "I don't know, you're there and I'm here" It made me mad at the time but he was right.

[Don R]

  Any luck with the buzzing?

[Kenzo1979]

Do you know if there are any added components in that headlight bucket? Additional Relays, flasher relay rerouted?  Stock headlight bucket wiring was all wires, no other devices in there. Aside from theHeadlight bulb socket,  it’s all just wires and bullet connectors.

[Kenzo1979]

550’s also have the front running lights. So take a look and see if there’s anything there too.  Light Blue and Orange (with white stripe) wires.  Even though those should not be blinking, doesn’t hurt to check that circuit as well.

[Bodi]

How does it flash with no flasher??
Electrical buzzing is not normal in DC electrics, with AC it can happen on poor connections.
DC usually gives a fizzle sound as connections arc but signal bulbs use low current and arcing would be rare. The lamps would flicker randomly.

I would clean all the bullet connectors, tighten the females a bit with pliers, and add some dielectric grease when reconnecting. Then spray some contact cleaner in the keyswitch rear (Deoxit maybe) and turn it back and forth a few dozen times. And inspect the fusebox, clean and check the tension of the clips and confirm the solder connections on the rear are good.

Doing the cleaner spray into the pod switch is good but be careful if you take it off the bar... the plastic parts of the switch are probably super brittle and tend to shatter easily. If already broken, the switch operation gets super strange and unpredictable if it works at all.

[JDrider]

The running lights work when the headlight works.
The only time i hear the light fizzle sound is when the turn signal is turned on and doesnt light right away.
I ear it fizzle to the beat of the turn signal. It is very faint and can only be heard with my ear close to the bucket.
After the signal light starts blinking (if it does) the fizzle is gone.

[bryanj]

That has to be a bad connection in headlamp or somebody has fitted a duff indicator buzzer as an extra

[JDrider]

That has to be a bad connection in headlamp or somebody has fitted a duff indicator buzzer as an extra

I'm guessing bad connection, I dont see any relays in the bucket.
or any aftermarket things. everything is still original.
I ordered an electric flasher to see if that helps.

[bryanj]

You wouldnt hear the flasher buzzing at the headlamp as its way to the back of the bike

[JDrider]

You wouldnt hear the flasher buzzing at the headlamp as its way to the back of the bike

correct.
That's why i was concerned