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K100-forum.com » Technical, repair and troubleshooting » Electrical » Noob question: Where's the ground on the K75?

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roach374

roach374
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Looking at this wiring diagram, for post-1990 K75 bikes, but I can't see any connection to ground (other than the battery).

Is the brown wire connected to ground somewhere / somehow?

    

MartinW

MartinW
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The earth wires are brown there is a cluster next to the ignition switch connector in the top left hand corner of your diagram.. A coloured wiring diagram would make it easier. Just trace the brown wires.
Regards Martin.


__________________________________________________
1992 K75s
    

3Back to top Go down   Noob question: Where's the ground on the K75? Empty Wiring Wed Nov 25, 2020 2:51 am

daveyson

daveyson
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If you mean on the bike, the battery earth lead usually goes to the gearbox, near the left foot peg.

Under the tank is a frame bolt that multiple earth wires connect to.


__________________________________________________
11/1985 BMW K100RT (late model)  Vin. 0090567
 ~120,000 km
    

92KK 84WW Olaf

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Some put the ground from the battery on to one of the starter mountings so check there.

There is also a bunch of grounds under the gas tank bolted to the frame tube.



Last edited by 92KK 84WW Olaf on Wed Nov 25, 2020 7:21 am; edited 1 time in total


__________________________________________________
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 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 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
    

Suzi Q

Suzi Q
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Life time member
Admirable restraint so far from the respectable individuals on this forum.


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Sometimes I'm not really Suzi Quatro.
    

92KK 84WW Olaf

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chris846 wrote:Admirable restraint so far from the respectable individuals on this forum.
Edited the tarter there.....

Its early in the day. Give us a chance.

I had been tempted to say 'the ground is under the tyres'.


__________________________________________________
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 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 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
    

Suzi Q

Suzi Q
Life time member
Life time member
.and if it’s not, you’ve crashed.

Yep, we’ve dragged it down 🙄


__________________________________________________
Sometimes I'm not really Suzi Quatro.
    

roach374

roach374
Silver member
Silver member
MartinW wrote:A coloured wiring diagram would make it easier. Just trace the brown wires.

Agreed! Any thoughts on where I could get one?

Thanks everyone! Looks like I got my answer. Seems weird they would include a specific symbol in the legend for "Frame Ground", then not use it anywhere in the wiring diagram.

    

MartinW

MartinW
Life time member
Life time member
You're in luck if you click on Forum and scroll down until you see Downloads/ Uploads and click on it. Scroll down until you see Uploads and click then click on Click here to access the tech page.  If you click on I agree your whole world will open up, the diagram is in the electrical section.
Regards Martin.


__________________________________________________
1992 K75s
    

roach374

roach374
Silver member
Silver member
MartinW wrote:You're in luck if you click on Forum and scroll down until you see Downloads/ Uploads and click on it. Scroll down until you see Uploads and click then click on Click here to access the tech page.  If you click on I agree your whole world will open up, the diagram is in the electrical section.
Regards Martin.

Amazing, exactly what I was looking for! Thanks!

    

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