BMW K bikes (Bricks)

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LaughingGravy

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1985 Naked K100 
Please help identify what this set of two yellow wires with a D shaped connector is supposed to go to before I pull this apart. The bike seems to run fine. It seems to be coming from the cluster.
Many Thanks
1985 K100 Yellow wires with D connector out of cluster area <img src=" />
1985 K100 Yellow wires with D connector out of cluster area 2q8muz4

    

Tom GKR

Tom GKR
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This connector looks like the clutch cut out switch or the front brake switch connector. Someone else will confirm or correct me on this. Cheers Tom


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1986 K100RT Ex Police (Slightly modified)
2010 Suzuku DL650 V Strom
1992 R100R
    

Motorbike Mike

Motorbike Mike
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Tom Grabau wrote:This connector looks like the clutch cut out switch or the front brake switch connector. Someone else will confirm or correct me on this. Cheers Tom
I'm with you on this Tom. 1985 K100 Yellow wires with D connector out of cluster area 112350

    

LaughingGravy

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Thank you both for the crazy-quick replies. I did a search and I can't seem to find what both of these answers do.  The front brake seems to light and I can start the bike in Neutral without issue.  What does a clutch cut out switch do?

I used to be able to start the bike in any gear with the clutch lever pulled in. Now, it will only start in Neutral (clutch lever in or out)  and has been this way for years. Could it be that this being unplugged was the cause? The wire/plug just became visible recently.
Yeah, I could take apart the front of the bike and just see/find the other connector, but if I could get an educated likely answer in advance, I would feel better.  Your help is greatly appreciated.

    

charlie99

charlie99
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as tom said , likely to be clutch switch

good luck


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O1985 K100 Yellow wires with D connector out of cluster area Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

Dai

Dai
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The other end of that connector is under the tank; should be easy enough to find. Off the top of my head I think the other end has a black/green and (possibly) a grey/green wire in it.


__________________________________________________
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
    

indian036

indian036
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@LaughingGravy wrote:Thank you both for the crazy-quick replies. I did a search and I can't seem to find what both of these answers do.  The front brake seems to light and I can start the bike in Neutral without issue.  What does a clutch cut out switch do?

I used to be able to start the bike in any gear with the clutch lever pulled in. Now, it will only start in Neutral (clutch lever in or out)  and has been this way for years. Could it be that this being unplugged was the cause? The wire/plug just became visible recently.

Yeah, I could take apart the front of the bike and just see/find the other connector, but if I could get an educated likely answer in advance, I would feel better.  Your help is greatly appreciated.
I think, with the input above and your 2nd paragraph deduction, you've correctly given your own educated likely answer.  Smile

Tom's mention of front brake or clutch cutout switch is because the switches are identical, with different functions according to what they are connected to.

Bill


__________________________________________________
1985 K100RT  VIN 0028991  My original Very Happy   (Historic rego)
1985 K100RT  VIN 0029036  BOB the Blue Old Bike  (Historic rego)
1990 K100LT  VIN 0190452  Work in progress
1984 K100RT  VIN 0023022  Work needing lots of progress

1986 K100RT  VIN 0090542  Work needing lots and lots of progress
1993 K1100LT  VIN 0183046  Work in progress
1993 K75S  VIN 0213045  Newest toy, slightly non-original
    

Dai

Dai
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@indian036 wrote:Tom's mention of front brake or clutch cutout switch is because the switches are identical, with different functions according to what they are connected to.

Bill
And the back brake switch and the fast idle switch...


__________________________________________________
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
    

duck

duck
Life time member
Life time member
Here's a 1985 K100 color wiring diagram:

http://dws.x10host.com/kp/1985.K100.Wiring.Color.jpg


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

92KK 84WW Olaf

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If you are travelling and get a breakdown due to faulty clutch switch you can swap the rear brake switch with it.  If your gear position indicator switch doesn't work and you have no neutral will have to do that or else short the wires near the lever. Just make sure then that you use the front brake to get a brake light for anyone behind and also the red warning light won't go out. But it will get you home!


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

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