Honda-SOHC

SOHC.co.uk Forums => CB500/550 => Topic started by: MotoGriff on September 03, 2017, 02:26:44 PM

Title: CB550 F1 / Disconnected ground wire behind headlamp
Post by: MotoGriff on September 03, 2017, 02:26:44 PM

Hi all,

Found a disconnected ground wire and can't for the life of me work out what it was supposed to be grounding.  Any ideas?
Pic here:
[attach=1]

Video here:
https://www.facebook.com/MotoGriff/posts/1914545938867208 (https://www.facebook.com/MotoGriff/posts/1914545938867208)

Thanks!!!

Title: Re: CB550 F1 / Disconnected ground wire behind headlamp
Post by: Bryanj on September 03, 2017, 02:30:08 PM

Brown wires on Hondas are live not ground

Title: Re: CB550 F1 / Disconnected ground wire behind headlamp
Post by: Trigger on September 03, 2017, 03:26:21 PM

If you watch the vid Bryan, someone is using a brown connected to a black and using it as a extra earth. Maybe a extra earth for indicators.

Title: Re: CB550 F1 / Disconnected ground wire behind headlamp
Post by: mike the bike on September 03, 2017, 07:25:26 PM

Is there anything that doesn't work?   If not,  don't worry about it.

Title: Re: CB550 F1 / Disconnected ground wire behind headlamp
Post by: Green1 on September 03, 2017, 08:57:20 PM

Most likely an extra earth for indicators that's how mine are on the 750

Title: Re: CB550 F1 / Disconnected ground wire behind headlamp
Post by: MotoGriff on September 03, 2017, 09:36:37 PM

Thanks for the replies guys!

To be clear : this is a black wire, with a blue/green marker on it (could even be aged white).   It's connected to the earth point on the left strut/stanchion. 

As far as I can make out everything on the bike works.

The ignition problem I mention in the video has been fixed (will soon upload a video of the ignition switch teardown, repair and rebuild)

Title: Re: CB550 F1 / Disconnected ground wire behind headlamp
Post by: Green1 on September 03, 2017, 09:39:00 PM

Black wire with green marker would be an old original indicator wire

Title: Re: CB550 F1 / Disconnected ground wire behind headlamp
Post by: mike the bike on September 03, 2017, 09:47:29 PM

No it isn't.

Title: Re: CB550 F1 / Disconnected ground wire behind headlamp
Post by: Green1 on September 03, 2017, 09:48:28 PM

Well it was on both my 750's

Title: Re: CB550 F1 / Disconnected ground wire behind headlamp
Post by: mike the bike on September 03, 2017, 10:01:30 PM

Left indicator is orange, right indicator is light blue.  I suggest if everything works then give it the snip.

Title: Re: CB550 F1 / Disconnected ground wire behind headlamp
Post by: Green1 on September 03, 2017, 10:04:32 PM

Couldn't be arsed to mention the orange and the blue looks green on my bikes  :P

Title: Re: CB550 F1 / Disconnected ground wire behind headlamp
Post by: Ashdowner on September 04, 2017, 07:21:13 AM

Didn't these have an indicator buzzer originally? I think some people took them out hence the spare connection.

Title: Re: CB550 F1 / Disconnected ground wire behind headlamp
Post by: mike the bike on September 04, 2017, 07:26:20 AM

Nothing worse than a colour blind painter and decorator.  ;D

Title: Re: CB550 F1 / Disconnected ground wire behind headlamp
Post by: Bryanj on September 04, 2017, 07:29:43 AM

Can't watch vids on this geriatric desktop !