Most motorcycle problems are caused by the nut that connects the handlebars to the saddle.

Duff indicators and possible charging system issues

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liverpool_f_
the 900
the 900

Posts : 368

Duff indicators and possible charging system issues

Post by liverpool_f_ on Sun 01 May 2016, 8:18 pm

Hi All,

I have a very bizarre problem that I have been trying to overcome for ages with no luck. My indicators have been acting up. Firstly they were rubbish on cold mornings, then they would only work when another light was on e.g. headlight or brake light. Now all those things apply but they will now not work when the engine is revved. They work fine at idle or when riding if you pull the clutch in. No luck otherwise.

I have replaced the flasher unit twice and cleaned all the electrical connections with switch cleaner as well as the control switch. Is this now pointing to a duff regulator/rectifier? The charging system is the only common system I think of to connect indicators with engine RPM. The reg/rec looks like it is original. Definitely not one of the ones with fins either way.

On a related note, is the revised Honda reg/rec with the fins a good way to go and is £50 a good price for replacement?
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Tricky.
the 900
the 900

Posts : 721
Location : Derby

Re: Duff indicators and possible charging system issues

Post by Tricky. on Sun 01 May 2016, 11:53 pm

check the charge rate on the battery when running with a multimeter, reg/rec could be gone. failing that, although all your connectors may be clean, you could have a bad earth or a short somewhere.
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Stooby2
Godzilla
Godzilla

Posts : 238
Location : Croydon, Sarf Laaandan

Re: Duff indicators and possible charging system issues

Post by Stooby2 on Mon 02 May 2016, 9:59 am

Te handlebar switches are fairly notorious for this. Spraying a load of WD40 in whilst operating the switch sorted mine out.

The other you check is to take the rectifier off and check the plate it bolts onto isn't corroded around the bolt holes. The recifier earths through these and if it's not good, can cause overheating. One mechanic I know recommends fitting a connection between oneof the bolts and the negative of the battery to provide a really sound earth.
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Jameshambleton
Moderator
Moderator

Posts : 1912
Location : Bedale, North Yorkshire

Re: Duff indicators and possible charging system issues

Post by Jameshambleton on Mon 02 May 2016, 1:12 pm

My indicators didn't work at all then they were solid and then the would flash then I'd leave the bike and repeat the process. I solved mine by spraying wd40 in my switch gear and then indicating left and right as much as possible and it's solved it ever since.
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liverpool_f_
the 900
the 900

Posts : 368

Re: Duff indicators and possible charging system issues

Post by liverpool_f_ on Mon 02 May 2016, 1:45 pm

I did give the switch gear a good cleaning with switch cleaner. It made a small difference but I don't think that is where the problem lies. I did also sand down the corrosion from the back of the reg/rec and sand down the mounting area as stooby2 suggested. That also didn't seem to help much.

Anyone else come across this issue?
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eternally_troubled
Admin
Admin

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Posts : 3699
Location : 'ere be fens. (near Cambridge)

Re: Duff indicators and possible charging system issues

Post by eternally_troubled on Tue 03 May 2016, 1:29 pm

If you are concerned about the charging system, do the charging voltage test and stator resistance test (from Haynes - I can go into more details if requried) - this will at least prove it works or doesn't. You will have to buy a multimeter if you don't already have one.

Once you've done that it sounds like it might be worth checking the wiring to the flasher unit - from the diagram it has three connections - one to the fusebox (12 V), one to ground and one to the indicator switch. With the bike switched off, remove the flasher relay and measure the resistance between each connetion and its 'other end' i.e. the fusebox, battery ground and the indicator switch respecively. They all should be 'low resistance' (say, less than 1 Ohm).
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liverpool_f_
the 900
the 900

Posts : 368

Re: Duff indicators and possible charging system issues

Post by liverpool_f_ on Fri 06 May 2016, 9:56 am

Thanks ET,

I had forgotten to check the connectors under the right panel. I got 2 new Tourmax regulator/rectifiers off ebay for cheap so I will be installing those as well. I remember someone on here recommending those. Even if thats not the culprit might as well get rid of my original considering how much grief they have caused others.

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