BMW K bikes (Bricks)

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1Back to top Go down   Signal fault Empty Signal fault on Wed Sep 25, 2013 6:14 am

BooG

BooG
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My left signal works fine. My right causes both sides to flash together but very slightly not at the same time (as hazzard lights would) if that makes sense? It was an intermittent fault for a while, but now it is a permanent one. About to start trouble shooting...I am a bit rubbish with electrics, but I am poised with multimeter in hand! Any tips gratefully received!

    

2Back to top Go down   Signal fault Empty Re: Signal fault on Wed Sep 25, 2013 6:18 am

RicK G

RicK G
VIP
VIP
Check fuse #7 if it is blown or not conducting it will cause that problem.  Don't just look at it check it with a meter or just replace all the fuses, I often see problems with the older blade type fuses going highresistance and not conducting but looking OK.
The other osssibility is that the starter brushes need changing as they supply an earth when the starter is not being used.


__________________________________________________
"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
    

3Back to top Go down   Signal fault Empty Re: Signal fault on Wed Sep 25, 2013 6:23 am

BooG

BooG
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Cheers Rick! A good and simple starting point for an "electro-phobe"!!

    

4Back to top Go down   Signal fault Empty Re: Signal fault on Thu Sep 26, 2013 7:39 am

BooG

BooG
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I have ordered the parts to clean and rebuild the starter motor. Fairly cheap as it happens! I see there are extensive instructions in the "How to do" section so that will be my next port of call!

    

5Back to top Go down   Signal fault Empty Re: Signal fault on Wed Oct 02, 2013 10:44 am

BooG

BooG
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Cleaned and replaced the brushes on the starter. Def improved the starting experience, but no change on the signal front! Fuses all correct and working. Must be something specific to the right side? Flasher unit would not be at fault coz the symptoms would be evident on both sides, yeah? I might dig it out and clean up the contacts anyway.....

    

6Back to top Go down   Signal fault Empty Re: Signal fault on Thu Oct 03, 2013 7:14 am

BooG

BooG
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So...as it stands...left hand signals and cancel are fine. Right hand signal causes a hazzard warning pattern, but not always in phase...just mostly! This means;
1) Fuses are working, or both sides would be affected(?)
2) Power is reaching all the relevant components
3) The problem must be specific to the right hand side...switch or wire/earth.
4) Flasher relay must be OK as it works on the left hand side, and hazzard warning as normal.
So my next investigation is the right hand switch. Am I heading in the right direction here?
Thanks!

    

7Back to top Go down   Signal fault Empty Re: Signal fault on Thu Oct 03, 2013 7:45 am

92KK 84WW Olaf

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Earthing issue?


__________________________________________________
1992 K100LT 0193214 Bertha Alaska 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 105,200 miles
1983 K100RS 0011171 Fricka 606 29,495 miles Damn K Pox Its a Bat outta Hell Now 36,188  miles
    

8Back to top Go down   Signal fault Empty Re: Signal fault on Thu Oct 03, 2013 7:53 am

BooG

BooG
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Possibly...I have done the starter brushes, so its not them. Failing that, there are no other electrical issues anywhere, so it must be an earth which is specific to the right hand side. I'm gonna attack the switch next to eliminate that from the list!

    

9Back to top Go down   Signal fault Empty Re: Signal fault on Thu Oct 03, 2013 8:21 am

MikeP

MikeP
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The right-hand switch gear has it's own earth lead. Look for the thin lead that should be screwed into the underside, it runs back to the main earth on the centre frame spar under the tank.


__________________________________________________
1992 K1
1993 K1100R (used to be an LT)
    

10Back to top Go down   Signal fault Empty Re: Signal fault on Thu Oct 03, 2013 4:53 pm

sidecar paul

sidecar paul
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Yes, Mike, that earth lead was the subject of an early recall, if I remember rightly, as some of the first bikes without the lead, found an earth route through the throttle cable.

Paul.


__________________________________________________
'84 K100RS (0014643) (owned since '85), 86 K100RS (0018891) with Martello sidecar (built as an outfit in '88),
'51 Vincent (since '67),'72 Montesa Cota (from new), '87 Honda RS125R NF4 (bought 2015) 
....No CARS never ever!
    

11Back to top Go down   Signal fault Empty Re: Signal fault on Thu Oct 03, 2013 5:08 pm

BooG

BooG
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Rolling Eyes I have removed and cleaned the right hand switch gear. All functioning well, and I checked the continuity along the relevant wires. All good! I will have to take the tank off to get to the earths on the frame. That's the next job!
I took out the flasher relay and had a look under the cover, but that all looked in order as well; the relays were opening and closing as they should, although this obviously does not guarantee reliability. However, it functions on the left side as do the hazzards, so its not drawing my attention too much. 
I will soldier on!! 
Thanks for all the info so far!

    

12Back to top Go down   Signal fault Empty Sorted! on Sat Oct 19, 2013 3:10 pm

BooG

BooG
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Finally tumbled the mystery of the right signal fault! 
A few months ago, my battery failed, so I took the Oddessy P630 off my old R65 that is "resting" at the moment. It is smaller in dimensions than the battery which came out, so the plate which rests on the battery top and fastens it to the battery tray sits lower down on the Oddessy. As well as this, the terminals are different on the Oddessy. All fitted in and worked however...or so I thought! The plate on top was slightly touching the earth side of the battery. This was enough to cause the afore mentioned problem, and no other!!! I popped a couple of pieces of rubber over each terminal, and bingo....back in the game...finally!!!
At least all my earths are inspected and cleaned, various connections also, and much better starting after replacing the brushes. 
Thanks for all the guidance and advice!

    

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