F650 indicator troubleshooting

[ciaranc]

My indicators died a few months back.
It's a 04 F650 GS, so that's a single cylinder, dual spark, non canbus bike.

Neither right nor left works, front or back.

I had made some changes, so I know I'm sort on my own but I like to know what I can troubleshoot.

LED indicators, with a new flasher unit.
LED "bulb" on the dash.
Bridge rectifier mod on the dash bulb to get it to work with a LED.

They did work for a few months.

I did try changing the flasher unit (cheap Chinese crap replaced with the same) but no joy.
The switch on the handle bars seems fine, as I did short out the terminals and still no light.
The yellow relays that live under the flasher unit appear to be fine. From what I understand, 2 are for the indicators and one is for the fuel pump.
I swapped one for the indicator and the one for the fuel pump, and the fuel pump still works, so I do think the yellow relays are fine.
There's just 1 fuse for the dash that also controls indicators? If so, that fuse is fine.

My bridge rectifier circuit may have failed, but would a fault on the dash light stop the indicators working?

Is there anything else that has failed on you before?

 

[Dansin]

I'm pretty sure the indicators run through the dash lamp. More information here - http://www.f650gs.crossroadz.com.au/LEDIndicators.html. Information on the diodes here - http://www.f650gs.crossroadz.com.au/DiodeRepair.html.

Is it easily converted back to stock to see if it's one of the LED specific components?

 

[Colt]

Hi Ciaranc,
do you have hazard warning lights that work?
I wonder if you have looked at the inline diode?
this was broken on Joannes f650cs scarver and cause indicator problems.
this link may be of interest:
http://www.f650gs.crossroadz.com.au/DiodeRepair.html
good luck, Jason

 

[ciaranc]

Thanks guys, plenty to work with there.
My hazard switch is also broken it's also on my to do list. I will short it and see when I'm back with the bike next.

 

[ciaranc]

I got around to fixing it this week, as the bike and I live in different countries at the moment.

It was the diode as suggested. It's quite deep in the bike, it's underneath the relay's, so that whole tray needs to come out.

I didn't have access to any diodes after I found the issue, so I've bypassed it for now.
I need to strip the bike again at some point, so I'll get a diode before then.