BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down   Loss of speedometer and tachometer. Empty Loss of speedometer and tachometer. on Thu Mar 14, 2019 9:47 am

TheJoker

TheJoker
Silver member
Silver member
I've had a recent problem where I've lost the speedometer and tachometer, now I've got several sets of clocks and 2 k100's and a k75 that the clocks have been tested on. The Tachometer works on all and so does the speedometer so I know that's not the problem.

However on my daily k100 1984, I've lost the speedometer and tachometer as in the needles don't move at all. I've tested the power connection to the speedometer pulse wire that connects into the final drive and there doesn't seem to be any power at all. At the moment I'm pretty stumped on what to check next. All earths that I know of (under the tank, back of the fuel rail, to the left of the bike from the battery) are all clean. The pesky starter motor is clean and the bushes were replaced two months ago.

My only idea at the moment is the cable that goes straight into the clocks itself which is part of the main harness. Does anyone happen to know which wire it is for the speedometer and tacho.

Or any other suggestions on where to look next; if it was mechanical it would be easy to sort with it being electric I'm stumped.


EDIT>>>>

I've also lost the right hand indicator front and rear everything else works, locally can't get DEOXIT so I've had to order it online. I've been using normal electrical cleaner for now.


__________________________________________________
My Bike List past to present so far;

Lexmoto (first bike ever to ride) , CB125 TDC 86 , CG125 89 , GN125 97 , ER5 96 , K100 RS 84

84/01 K100rs 0013627
    

2Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Thu Mar 14, 2019 11:06 am

Arlina

Arlina
Life time member
Life time member
When you turn the key without starting, does the charge indicator work?
It's the black wire, coming from the alternator to the dash.
Connected when you turn around the breadbox, it's pin 9, the fourth from left under.

Loss of speedometer and tachometer. 03_TellerSet
(It's Dutch, but in case I can translate...)

Other possibility is, that the brushes of your startermotor are too far gone.
At 6 or 7 mm they go bad, and give these kinds of problems.


__________________________________________________
Loss of speedometer and tachometer. Eu-log10 K1100RS/LT - R1200RT - R1100RS (RIP) - Cagiva SST 350 Ala Verde
    

3Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Thu Mar 14, 2019 8:25 pm

TheJoker

TheJoker
Silver member
Silver member
Well I've found my problem seems to be the plastic connector is brittle and falling apart. With this being a BMW specific connector it looks like I may have to go down the route of a new loom or replacing the connectors with good decent ones.

Loss of speedometer and tachometer. Receiv11


__________________________________________________
My Bike List past to present so far;

Lexmoto (first bike ever to ride) , CB125 TDC 86 , CG125 89 , GN125 97 , ER5 96 , K100 RS 84

84/01 K100rs 0013627
    

4Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Thu Mar 14, 2019 9:30 pm

Arlina

Arlina
Life time member
Life time member
Ow dear, the good old flat pins, haven't seen them since my K100 years ago.
Maybe find replacement in big electronics online, such as Conrad, Reichelt, etc.


__________________________________________________
Loss of speedometer and tachometer. Eu-log10 K1100RS/LT - R1200RT - R1100RS (RIP) - Cagiva SST 350 Ala Verde
    

5Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Thu Mar 14, 2019 10:29 pm

Dai

Dai
Life time member
Life time member
Not BMW specific and not that expensive to replace.

https://uk.rs-online.com/web/p/pcb-connector-housings/5091708
https://uk.rs-online.com/web/p/pcb-connector-contacts/5091994

You do have to buy more than you need, but last time I bought some I was able to offset the cost by passing on sets of connectors + pins to other members on the forum.


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

6Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Thu Mar 14, 2019 10:37 pm

TheJoker

TheJoker
Silver member
Silver member
Thank you Dai, with BMW and the little plugs that are on the end of the ignition for example; mistakingly I assumed they were specific.

I'll order some then help anyone out in the UK if they need to replace there's.


__________________________________________________
My Bike List past to present so far;

Lexmoto (first bike ever to ride) , CB125 TDC 86 , CG125 89 , GN125 97 , ER5 96 , K100 RS 84

84/01 K100rs 0013627
    

7Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Thu Mar 14, 2019 11:10 pm

duck

duck
Life time member
Life time member
@Arlina wrote:When you turn the key without starting, does the charge indicator work?
It's the black wire, coming from the alternator to the dash.
Connected when you turn around the breadbox, it's pin 9, the fourth from left under.

FYI: The wire from the alternator to the cluster is blue, not black.


__________________________________________________
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
http://www.ClassicKBikes.com
    

8Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Thu Mar 14, 2019 11:56 pm

Arlina

Arlina
Life time member
Life time member
Dai; thanks, didn't know there was a replacement. No need for me, just learning Smile

Duck; got it from the diagram from Bert, that one is black for the K100.


__________________________________________________
Loss of speedometer and tachometer. Eu-log10 K1100RS/LT - R1200RT - R1100RS (RIP) - Cagiva SST 350 Ala Verde
    

9Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Fri Mar 15, 2019 12:43 am

duck

duck
Life time member
Life time member
It's blue for all of the classic K bikes:

Loss of speedometer and tachometer. HUCXoak


__________________________________________________
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
http://www.ClassicKBikes.com
    

10Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Fri Mar 15, 2019 7:08 am

Arlina

Arlina
Life time member
Life time member


__________________________________________________
Loss of speedometer and tachometer. Eu-log10 K1100RS/LT - R1200RT - R1100RS (RIP) - Cagiva SST 350 Ala Verde
    

11Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Fri Mar 15, 2019 7:33 am

Dai

Dai
Life time member
Life time member
I'm going to argue with both of you: the two wiring looms I stripped were black/blue to the tachometer. One was an '83 K100 and the other an '86 K100. Haynes shows black/blue too but (and I'll get in first) their reliability is sometimes suspect.


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

12Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Fri Mar 15, 2019 8:06 am

Arlina

Arlina
Life time member
Life time member
I have some wiring harnasses here, will check tomorrow with daylight.


__________________________________________________
Loss of speedometer and tachometer. Eu-log10 K1100RS/LT - R1200RT - R1100RS (RIP) - Cagiva SST 350 Ala Verde
    

13Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Fri Mar 15, 2019 9:39 am

Dai

Dai
Life time member
Life time member
Very Happy bounce cheers


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

14Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Fri Mar 15, 2019 10:10 am

Arlina

Arlina
Life time member
Life time member
I remember on my K100RT 1986 it was black.


__________________________________________________
Loss of speedometer and tachometer. Eu-log10 K1100RS/LT - R1200RT - R1100RS (RIP) - Cagiva SST 350 Ala Verde
    

15Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Fri Mar 15, 2019 10:11 am

Laitch

Laitch
Life time member
Life time member
That diagram indicates Black/Blue. :BW:



Last edited by Laitch on Fri Mar 15, 2019 10:14 am; edited 1 time in total (Reason for editing : To increase syllable count.)


__________________________________________________
1995 K75T 68,000 miles
Loss of speedometer and tachometer. Usa-lo10
    

16Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Fri Mar 15, 2019 11:38 am

Arlina

Arlina
Life time member
Life time member
@Laitch wrote:
That diagram indicates Black/Blue. :BW:
Black/blue is from the coil to the tacho.
Black is from the alternator to the charge indicator/12V to speedo and tacho.


__________________________________________________
Loss of speedometer and tachometer. Eu-log10 K1100RS/LT - R1200RT - R1100RS (RIP) - Cagiva SST 350 Ala Verde
    

17Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Fri Mar 15, 2019 11:56 am

Dai

Dai
Life time member
Life time member
Arghhhh!!!! I just re-read Duck's answer and wondered where the hell I got sidetracked. Yes, the alternator control wire is blue. Go take a look at the back of the alternator - it's very visible.

Sorry Duck.... Embarassed Embarassed


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

18Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Fri Mar 15, 2019 12:55 pm

Arlina

Arlina
Life time member
Life time member
Twisted Evil Got my eye on it Very Happy


__________________________________________________
Loss of speedometer and tachometer. Eu-log10 K1100RS/LT - R1200RT - R1100RS (RIP) - Cagiva SST 350 Ala Verde
    

19Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Fri Mar 15, 2019 1:48 pm

Crazy Frog

Crazy Frog
admin
admin
Bert F..cked up!
I can see my mistake: On the original black and white schematic, the color is marked "BL" which is Blue or Blau in German.
I simply mixed my English and German and interpreted BL as Black. Embarassed Sad


__________________________________________________
Loss of speedometer and tachometer. Frog15Loss of speedometer and tachometer. Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML sidecar.
    

20Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Fri Mar 15, 2019 8:15 pm

Arlina

Arlina
Life time member
Life time member
But for sure we use your diagrams Smile
(even though we lost many bikes due to the black or blue wire..... Loss of speedometer and tachometer. 44271 Loss of speedometer and tachometer. 44271 Loss of speedometer and tachometer. 44271 )


__________________________________________________
Loss of speedometer and tachometer. Eu-log10 K1100RS/LT - R1200RT - R1100RS (RIP) - Cagiva SST 350 Ala Verde
    

21Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Sat Mar 16, 2019 12:04 am

Laitch

Laitch
Life time member
Life time member
@Dai wrote:I . . . wondered where the hell I got sidetracked. . . .
I don't know about you but I got distracted by the thread's title and and a flare-up of cabin fever. Smile


__________________________________________________
1995 K75T 68,000 miles
Loss of speedometer and tachometer. Usa-lo10
    

22Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Sat Mar 16, 2019 12:48 am

duck

duck
Life time member
Life time member
@Crazy Frog wrote:Bert F..cked up!
I can see my mistake: On the original black and white schematic, the color is marked "BL" which is Blue or Blau in German.
I simply mixed my English and German and interpreted BL as Black. Embarassed Sad

As I'm sure you know, black is schwarz (SW) in Cherman.

Loss of speedometer and tachometer. May-the-schwartz-be-with-you


__________________________________________________
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
http://www.ClassicKBikes.com
    

23Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Sat May 11, 2019 11:23 pm

Crazy Frog

Crazy Frog
admin
admin
I finally found my original files and made the correction on the main diagram.
Looking at what I made 10 years ago was a big project! But as people use it, it wasn't wasted time.
Loss of speedometer and tachometer. K100-e10


__________________________________________________
Loss of speedometer and tachometer. Frog15Loss of speedometer and tachometer. Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML sidecar.
    

24Back to top Go down   Loss of speedometer and tachometer. Empty Speedo no go on Sun May 12, 2019 10:17 am

daveyson

daveyson
Silver member
Silver member
Hi Bert,

Just want to say a huge thank you for the wiring diagrams. I'm new to bricks and this forum, I thought Gregory's wiring was the easiest, until recently when I found yours. These diagrams are a big time saving tool and a huge asset for understanding.


__________________________________________________
11/1985 bmw k100rt (late model) Vin. 0090567
    

25Back to top Go down   Loss of speedometer and tachometer. Empty Re: Loss of speedometer and tachometer. on Sun May 12, 2019 10:25 am

Crazy Frog

Crazy Frog
admin
admin
Thanks daveyson.
I made them when I was trying to understand the K bikes electronic.
Now, I use them all the time.


__________________________________________________
Loss of speedometer and tachometer. Frog15Loss of speedometer and tachometer. Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML sidecar.
    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum