RZ/RD 350 & Misc. 2-Stroke Tech BBS

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 Post subject: blinker staying on
PostPosted: Sat Jun 10, 2017 1:43 am 
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Joined: Sun Dec 06, 2015 4:12 am
Posts: 18
Location: Australia
Hi hoping someone can shed some light on my problem as electrical is not something I know much about.

I have nearly finished rebuilding my bike (rd250lc) thought time to try out the electrics everything is running fine except the blinkers they blink ok but as soon as I turn the headlight on they stop blinking
turn the headlight off and they start blinking again?

I did think maybe the battery was shagged as it came with the bike bought another still no good but tried another from one of my other bikes that is a known good battery still same problem.

I have pulled all the connectors apart some of the bullet connectors I tightened up felt a bit loose then plugged them back in also checked the earth.

Any suggestions at this stage would be great as I'm really not sure where I should start looking?

Thanks Rob


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 Post subject: Re: blinker staying on
PostPosted: Sat Jun 10, 2017 8:59 am 
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Joined: Thu Jun 19, 2014 9:52 pm
Posts: 309
Sounds like low battery voltage to me. See if they work when you start it.

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 Post subject: Re: blinker staying on
PostPosted: Sat Jun 10, 2017 3:24 pm 
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Joined: Wed Jun 02, 2010 11:25 am
Posts: 262
Location: Heber Springs, Arkansas, USA
75RD350rider wrote:
Sounds like low battery voltage to me. See if they work when you start it.


More than likely with the engine running the flasher will work, at least that is the case with my RZ.

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1973 RD350
1977 Dt100
1979 RD400F Daytona Special
1984 RZ350


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 Post subject: Re: blinker staying on
PostPosted: Sat Jun 10, 2017 3:24 pm 
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Joined: Wed Jun 02, 2010 11:25 am
Posts: 262
Location: Heber Springs, Arkansas, USA
75RD350rider wrote:
Sounds like low battery voltage to me. See if they work when you start it.


More than likely with the engine running the flasher will work, at least that is the case with my RZ.

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1973 RD350
1977 Dt100
1979 RD400F Daytona Special
1984 RZ350


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 Post subject: Re: blinker staying on
PostPosted: Sat Jun 10, 2017 5:58 pm 
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Joined: Sun Jul 31, 2016 8:32 am
Posts: 32
The blinkers work on/off/on by a bi-metalic piece that heats up during contact and cools off as soon as it disconnects, to start the cycle again. When the lamps to stay on, it is an indication that the bi-metalic piece is not heating enough (power draw not enough) to the point of popping out of contact. This usually happens when one lamp is burnt.

Anything that reduces the current circulating through the bimetalic piece is suspect:
battery voltage, lamp amperage incorrect or burnt, or excessive resistance at the switch or at the lamp sockets, .

If the battery voltage has been discarded, I would check the other two.

If all fails, replace the blinker, which can go defective as well.


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 Post subject: Re: blinker staying on
PostPosted: Sat Jun 10, 2017 7:48 pm 
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Joined: Mon Mar 03, 2014 8:44 pm
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Location: Calgary, Alberta, Canada
I would check all your grounds. These bikes are old. Every ground should be removed and cleaned up, at least every couple of years to keep the circuit connections "fresh".

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 Post subject: Re: blinker staying on
PostPosted: Sun Jun 11, 2017 2:26 am 
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Joined: Sun Dec 06, 2015 4:12 am
Posts: 18
Location: Australia
Thans guys I fitted the exhuasts today and fired the bike up first time since restoring the bike.

So started the bike and checked the blinkers with the bike running headlights on and the blinkers worked
fine so maybe the voltage is down?

Oh I should of mentioned the blinkers & switch are NOS but doesn't mean they can't be faulty I suppose.

I will check the ground again and the other things out.

Thanks for the imput


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 Post subject: Re: blinker staying on
PostPosted: Thu Jul 27, 2017 1:20 am 
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Joined: Mon Jan 16, 2017 9:24 pm
Posts: 6
Low voltage will cause turn signal to not blink as the flasher relay requires 12V
I just found a WAY less expensive than OEM flasher relay. Novita flasher #550, about $10
Though it is round & silver.


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