K11 Owners Group

Moondog · Posted: Sat Jul 17, 2010 10:15 am Post subject: 1996 K1100RS - Battery Ground?

Does anyone remember the original spot where the battery made its ground?

My ground is on the battery/ABS tray and it seems like a lot of potential for high resistance build up having to go through four contacts for the tray and then four more contacts for the cross brace underneath the tray.

Well I tried to make a .PDF of the IPC but I wasn't successful to show what I am posting about.

There are a total of nine contact points before the ground gets to the frame and/or engine.

On prior threads I am fighting a charging problem and while the generator is getting looked at I decide to look at my grounds to see how healthy they were. Where my battery ground was connected was a little corroded but I don't think bad enough to give me this problem.
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"Badges? We don't need no stinking badges"!
_________________
"Badges? We don't need no stinking badges"!

I like the social aspect of riding. Rally's, socializing, drinking beer, fartin' and carrying on. Smile

2004 R1150RS
1996 K1100RS (moved on to new home)

garynali · Posted: Sun Jul 18, 2010 4:53 am Post subject:

Those electrons can be awfully elusive animals. It doesn't take much increase in circuit resistence to cause big losses in voltage and current so a corroded battery earth can be a big problem. If you have any doubts about the earthing i'd run a new cable straight to a good spot on the engine block. In my experience these problems usually come in clusters, lots of high resistence joints and bad earths. It's just aging, but the motronic and ABS computers add an extra dimension to the failure possibilities Every few years I disconnect , clean all my electrical connectors and coat with dielectric grease.( 93 K1100RS) so far so good.
Gary C

jarnbak · Posted: Sun Jul 18, 2010 6:15 am Post subject:

Does anyone remember the original spot where the battery made its ground?

The wire are connected to the gearbox on the left hand side just above
the shaft for the gearlever.The grounding point has a 6 mm tread for
a hex bolt.At that point another wire goes to a grounding point below the fueltank and connect to the frame.
Regards Palle.

Scott_Anderson · Posted: Sun Jul 18, 2010 11:30 pm Post subject:

I know that for both of my LT's the main ground is at the rear mounting bolts of the starter. Where it bolts to the transmission casing.
I would have thought that the RS would have grounded at the same place.
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Ride safe.

1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold)

Flying Duck · Posted: Sun Jul 18, 2010 11:48 pm Post subject:

93s ground to the tranny above the gear shift lever like K75s and K100s. 94 and later bikes have several grounds and are a tad more complicated.
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93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
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Moondog · Posted: Mon Jul 19, 2010 6:19 am Post subject:

Well that is what I am hearing so it I guess it is "pick your favorite spot". I tried it on the right side under the bracket that holds the footrest/brake pedal plate. It is right on the transmission. The ground cable must have been shortened over the years and that is all I got to work with.
_________________
"Badges? We don't need no stinking badges"!

I like the social aspect of riding. Rally's, socializing, drinking beer, fartin' and carrying on. Smile

2004 R1150RS
1996 K1100RS (moved on to new home)

Scott_Anderson · Posted: Mon Jul 19, 2010 8:10 am Post subject:

Moondog, there is always the option of getting yourself a generic premade cable(longer one) to ground the battery to wherever you wish.
_________________
Ride safe.

1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold)

Moondog · Posted: Mon Jul 19, 2010 10:07 am Post subject:

Well that is what I have done. I took what cable I had and ran it down under the right foot rest plate. Short run and good contact with the tranny. Seems over the years there hasn't been a defined point were BMW wanted the ground cable run to or over the years this cable got shortened too much. Who knows. Where it is now will work fine. A ground is a ground is a ground Smile

_________________
"Badges? We don't need no stinking badges"!

I like the social aspect of riding. Rally's, socializing, drinking beer, fartin' and carrying on. Smile

2004 R1150RS
1996 K1100RS (moved on to new home)