BMW K bikes (Bricks)

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1Back to top Go down   Light to gauge Empty Light to gauge Sat Apr 24, 2021 3:36 am

Carlsen

Carlsen
active member
active member
Hi folks!
When I bought the bike there was no light in the lunchboxand clock not working. Should there be backlight?
Changed to a new gauge with tenet.
Worked at first, not a 100%, light was a little flicky.
Now it comes and goes. 
What could it be? Checked positive wire and cleaned all negatives on the bike without help. Changed the battery..

    

2Back to top Go down   Light to gauge Empty Re: Light to gauge Sat Apr 24, 2021 6:38 am

Dai

Dai
Life time member
Life time member
Check fuse 3. Even if it looks, good, replace it. Not sure about the lunchbox; that sounds as if a PO has added a light to it.


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1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

3Back to top Go down   Light to gauge Empty Light gauges Sat Apr 24, 2021 9:23 am

daveyson

daveyson
Life time member
Life time member
With light switch off and key to park you have park lights front and back of your bike but no instrument cluster back lights (as a battery saving feature) With light switch on park (or on) you have park lights as well as instrument cluster back lights, with key on park (or on) Most of the power to the cluster is from pin 6 - green/black. Power to the back lights is from pin 24 - grey/blue. Pins 13 and 18 are earth.

Pin 6 gets power from fuse 1 through the kill switch, which gets it through the ignition switch.



Last edited by daveyson on Sat Apr 24, 2021 7:35 pm; edited 2 times in total


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11/1985 bmw k100rt (late model)  Vin. 0090567
 ~120,000 km
    

4Back to top Go down   Light to gauge Empty Re: Light to gauge Sat Apr 24, 2021 10:44 am

Carlsen

Carlsen
active member
active member
@daveyson wrote:With light switch off and key to park you have park lights front and back of your bike but no instrument cluster back lights. With light switch on park (or on) you have park lights as well as instrument cluster back lights, with key on. Most of the power to the cluster is from pin 6 - green/black. Power to the back lights is from pin 24 - grey/blue. Pins 13 and 18 are earth.

Pin 6 gets power from fuse 1 through the kill switch, which gets it through the ignition switch.
Ok, good to know that it should have been light. Then I will measure those pins and hopefully find something wrong.
Thanks you

    

5Back to top Go down   Light to gauge Empty Re: Light to gauge Sat Apr 24, 2021 12:03 pm

moriarti

moriarti
Life time member
Life time member
Hi just a pointer Background/ panel lights only work in the dark Ignition on lights on use a dark cover over clocks look under cover lights should be on  Rolling Eyes


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1984 k100 rs red/black VIN  0004449
    

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