BMW K bikes (Bricks)

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1Back to top Go down   neutral light? Empty neutral light? Fri Mar 11, 2016 5:23 am


active member
active member
Hi everyone,been busy lately. On vacation this week getting a much riding as I can. Too much rain this year I think a bit unusual.
Fixed blinkers seems it just needed new oil lol,about 160 bucks worth.
just recently after forging some water my neutral light is staying on almost all the time in any gear. Could you tell me where the switch is located? Would appreciate it. take care.


2Back to top Go down   neutral light? Empty Re: neutral light? Fri Mar 11, 2016 6:51 am


Life time member
Life time member
It's behind the swingarm pivot. You can see it, but you can't get at it without dropping the swingarm out. Unfortunately, there's a bit of further bad news too: the switch is held in with two 4mm (8mm AF) bolts which may or may not be rusted solid. The fact that water has got in means that if you're lucky, the inside of the switch will dry out again. Truthfully, I'd be inclined to wait a while longer before going after the switch.

1983 K100 naked upgraded to K100LT spec after spending time as an RS and an RT
1987 K100RT
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   neutral light? Empty Re: neutral light? Fri Mar 11, 2016 7:33 am


Life time member
Life time member

Here you can see the gearswitch on picture 1
On the left side, with the cable going up.
On pictures 2 you see the gearswitch cable going out the gearbox.
neutral light? <a href=neutral light? Image25" />

neutral light? <a href=neutral light? Image26" />

I would first check the cable if there is any contact issue.
It is on the right side.

1. Gear: yellow-dark blue=No PIEP, yellow-black=PIEP, yellow-white=PIEP
Neutral: yellow-dark blue=PIEP, yellow-black=PIEP, yellow-white=PIEP
2. Gear: yellow-dark blue=PIEP, yellow-black=no PIEP, yellow-white=PIEP
3. Gear: yellow-dark blue=No PIEP, yellow-black=No PIEP, yellow-white=PIEP
4. Gear: yellow-dark blue=PIEP, yellow-black=PIEP, yellow-white=No PIEP
5. Gear: yellow-dark blue=No PIEP, yellow-black=PIEP, yellow-white=no PIEP

The gearswitch counts digital up, equivalent yellow-dark blue 2^0, yellow-black 2^1 and yellow-white 2^2 equivalent.

neutral light? <a href=neutral light? Image24" />


Only a few activities make me experience my senses in a way motorcycle riding does, it is like swimming in the nude in a river.
K75 BA/1992 ABS, K75 BA/1991 noABS, Ducati, Mobylette M1/1973

4Back to top Go down   neutral light? Empty Re: neutral light? Fri Mar 11, 2016 8:15 am


Life time member
Life time member
Have a read of this and test the GPSw at that side connector seen in Chocolate's last pic above. Its common for the switch to get water in it and corrosion develops.
Also, test for earth connectivity back thru the harness (brown wire to earth).


1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
 neutral light? Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90

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