BMW K bikes (Bricks)

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1Back to top Go down   Resistance is futile...... Empty Resistance is futile...... Sat Oct 06, 2012 9:02 am

Lucky Lou

Lucky Lou
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When i had the battery off to check it i tested the resistance between the live terminal and earth with the ignition off and found a reading of 56 ohms, i thought this strange so i tested my old Airhead and the circuit was totally open no reading (as expected).

I returned to the K retested pulling all the fuses and the reading remained constant at 56 ohms, i know the clock circuit is on independent of the ignition but i would have thought that it would be on a fused circuit so i just wondered if anyone else has tested for this and what reading they got as 56 seems pretty low to me and could be the cause of my previous starting troubles.

Lou

    

2Back to top Go down   Resistance is futile...... Empty Re: Resistance is futile...... Sat Oct 06, 2012 9:14 am

charlie99

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you have abs lou ?


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OResistance is futile...... 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 ..
    

3Back to top Go down   Resistance is futile...... Empty Re: Resistance is futile...... Sat Oct 06, 2012 9:31 am

Lucky Lou

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@charlie99 wrote:you have abs lou ?

Yes but i have pulled the relay as its showing a fault, i am getting this reading with the ignition off though ??

Lou

    

4Back to top Go down   Resistance is futile...... Empty Re: Resistance is futile...... Sat Oct 06, 2012 9:39 am

charlie99

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time to start pulling fuses till you find the circuit that has that load ...

as i said earlier ...folks do some interesting mods ..non documented some times ...and often in an incorrect way


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OResistance is futile...... 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 ..
    

5Back to top Go down   Resistance is futile...... Empty Re: Resistance is futile...... Sat Oct 06, 2012 9:43 am

Lucky Lou

Lucky Lou
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Not noticed any unusual wiring but i am getting the 56ohms with the fuses out.

Lou

    

6Back to top Go down   Resistance is futile...... Empty Re: Resistance is futile...... Sat Oct 06, 2012 10:08 am

charlie99

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ouch !

that could make it a bit harder to find

better wait till ingesat comes over ...he may know of later series options fitted ! giggle

but to my way of thinking they should be behind the fuses ...


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OResistance is futile...... 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 ..
    

7Back to top Go down   Resistance is futile...... Empty Re: Resistance is futile...... Sat Oct 06, 2012 11:06 am

RicK G

RicK G
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Lou there are a number of places that can be unpluged to isolate it futher. Unplug the ECU, ICU which is under the tank right up front below the top frame tube and both left and right handlebar switches, these unplug from the main harnes under the tank.
You possibly have a crushed harnes in some place and the most likely place is at the steering head. Wuold also pay to unplug the instrument panel. Do them one by one and check after each one and inspect the wire harnes all over for crushing or abrasions.
From what you have done already I reckon you know what I am getting at.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

8Back to top Go down   Resistance is futile...... Empty Re: Resistance is futile...... Sat Oct 06, 2012 11:30 am

Lucky Lou

Lucky Lou
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@Rick G wrote:You possibly have a crushed harnes in some place and the most likely place is at the steering head. Wuold also pay to unplug the instrument panel. Do them one by one and check after each one and inspect the wire harnes all over for crushing or abrasions.
From what you have done already I reckon you know what I am getting at.

Yup going to pull the tank off tomorrow and have a poke arround would have thought the circuit would be open with the fuses out thanks for the help.

Lou

    

9Back to top Go down   Resistance is futile...... Empty Re: Resistance is futile...... Sat Oct 06, 2012 2:21 pm

Inge K.

Inge K.
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I would have started with disconnecting the alternator, then the ignition switch.
Any aftermarket euquipment mounted?


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

10Back to top Go down   Resistance is futile...... Empty Re: Resistance is futile...... Sat Oct 06, 2012 2:44 pm

Lucky Lou

Lucky Lou
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@Inge K. wrote:I would have started with disconnecting the alternator, then the ignition switch.
Any aftermarket euquipment mounted?


Does the alternator have an exiter circuit ? I have played with Airheads for years but i am new to these new fangled K,s

No extras bog standard RT just wondered if anyone else has ever tested to earth and got a reading for a bike with no problems so i would have an idea what the reading should be.The cooling fans dont work so i will check that circuit when i get the tank off for a poke around.

Lou

    

11Back to top Go down   Resistance is futile...... Empty Re: Resistance is futile...... Sat Oct 06, 2012 2:51 pm

Inge K.

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@Lucky Lou wrote:[Does the alternator have an exiter circuit ? I have played with Airheads for years but i am new to these new fangled K,s

Yes, the rotor is the exciter.

The alternator is a identical to Bosch models used in cars......years ago.



Last edited by Inge K. on Sat Oct 06, 2012 2:57 pm; edited 1 time in total (Reason for editing : Adding info.)


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

12Back to top Go down   Resistance is futile...... Empty Re: Resistance is futile...... Sat Oct 06, 2012 2:54 pm

Lucky Lou

Lucky Lou
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@Inge K. wrote:
@Lucky Lou wrote:[Does the alternator have an exiter circuit ? I have played with Airheads for years but i am new to these new fangled K,s

Yes, the rotor is the exciter.
s

Mmmm that will be worth checking then

Thanks Lou

    

13Back to top Go down   Resistance is futile...... Empty Re: Resistance is futile...... Sat Oct 06, 2012 3:08 pm

ReneZ

ReneZ
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Definitely have a look at the alternator. In an other threat we found an alternator faulty, drawing 2 amps from the battery with all the fuses out. Just pull the plug and see what it does.


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Greetings from Florida! Having a 'new' K  :cyclops:    Surprised-o: 

Rene


BMW K100 - 1985 (0030029) Resistance is futile...... Rain
BMW K1200GT - 2003 (ZK01223)
    

14Back to top Go down   Resistance is futile...... Empty 56 ohms Fri Oct 19, 2012 10:32 am

sven k100

sven k100
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could that reading be the ignition kill circuit, with the low tension side of the circuit earthed via kill switch or ignition switch ?

    

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