BMW K bikes (Bricks)

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1Back to top Go down   Hazard switch Empty Hazard switch Sun Nov 11, 2012 4:43 pm

Banditrob

Banditrob
active member
active member
Hi all

The hazard light switch has stopped working on my 87 K100LT. When I first got the bike the rocker switch would activate the hazard lights now and again. Any tips on getting into and checking the rocker switch.


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K100LT, Suzuki Bandit 1200 Mk 1 and Honda C90
    

2Back to top Go down   Hazard switch Empty Re: Hazard switch Sun Nov 11, 2012 5:05 pm

nino

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@Banditrob wrote:Hi all

The hazard light switch has stopped working on my 87 K100LT. When I first got the bike the rocker switch would activate the hazard lights now and again. Any tips on getting into and checking the rocker switch.



Dirty probably, remove from dash and clean. It happened to me few times

    

3Back to top Go down   Hazard switch Empty Re: Hazard switch Sun Nov 11, 2012 5:06 pm

robmack

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The Hazard switch is a SPDT switch. Separate the switch connector under the tank on the left side (3 pole flat black connector). There will be three wires -- Brown, Yellow/Violet and Blue. Engage the switch and test for continuity between Brown and Yellow/Violet. You should read near zero Ohms. Disengage the switch and take the measurement again. You should get an open circuit. This is the normal operation of the switch. If you have open circuit between Brown and Yellow/Violet when engaged, then the switch needs to be examined.

The rocker pivots on a plastic protrusion off the main body. If you are really careful, you could remove the rocker by gently prying the rocker from its pivots. Springs will go flying when you do this so be careful. However, it is probably best to first test continuity at the switch terminals to see whether it is the wire or the switch. If it is the wires, it probably is a broken solder connection at the switch. If it is the switch, then first try spraying through the switch housing with contact cleaner. If that fails to revive the switch, then disassemble and diagnose why the switch contacts are not working. By this time, it might be necessary to buy a new switch.

Hope this helps.


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Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

4Back to top Go down   Hazard switch Empty Re: Hazard switch Sun Nov 11, 2012 5:11 pm

Inge K.

Inge K.
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Some pictures is usually helpful, have a look at this link .


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Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

5Back to top Go down   Hazard switch Empty Re: Hazard switch Sun Nov 11, 2012 5:27 pm

sidecar paul

sidecar paul
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The switch is similar to the heated grips switch that I have on my bench at the moment, so I've just pulled it apart for a pic:-

Push on the two clips with a screwdriver to release the contact block.

Hazard switch Sam_0320

You'll then be able to clean the contacts properly.

Hazard switch Sam_0321

Paul.


__________________________________________________
'84 K100RS (0014643) (owned since '85), 86 K100RS (0018891) with Martello sidecar (built as an outfit in '88),
'51 Vincent (since '67),'72 Montesa Cota (from new), '87 Honda RS125R NF4 (bought 2015) 
....No CARS never ever!
    

6Back to top Go down   Hazard switch Empty Re: Hazard switch Sun Nov 11, 2012 6:34 pm

Banditrob

Banditrob
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active member
Great pics, thanks for the help everyone.


__________________________________________________
K100LT, Suzuki Bandit 1200 Mk 1 and Honda C90
    

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