BMW K bikes (Bricks)


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1Back to top Go down    What is this lock for? on Fri Apr 07, 2017 10:31 pm

Bucky

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Does anyone know what this lock is for /goes to? My ignition key doesn't work to it either. My bike is a 85 K100RT

    

2Back to top Go down    Re: What is this lock for? on Fri Apr 07, 2017 11:01 pm

RicK G

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As far as I can ascertain it's not an OEM fitment but I will hazard a guess that it is a security alarm of some sort.


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

3Back to top Go down    Alarm on Fri Apr 07, 2017 11:02 pm

Bucky

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Thanks Rick

    

4Back to top Go down    Re: What is this lock for? on Fri Apr 07, 2017 11:55 pm

kioolt

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That's a factory alarm. My 91 K100LT has the same thing. If the alarm is present you will have the alarm box inside of the tool tray. There will be a hole in the tool tray cover for a pushbutton switch to stick through for when the seat is opened the alarm will sound. I think there is also a motion sensor in it. The backup battery is probably dead by now. Luckily mine was just a 9 volt battery but I believe earlier ones had a special battery.


__________________________________________________
2004 R1150RT 183,000 miles
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total418,600 BMW miles

AMA,BMWRA,BMWMOA


The cheapest thing on a BMW is the nut that connects the handlebars to the seat.
    

5Back to top Go down    Re: What is this lock for? on Sat Apr 08, 2017 12:33 am

RicK G

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Ah so what I was shown and told to be a factory alarm probably was not. It had a key lock under the seat and the key needed to be inserted and turned of within a few seconds or the alarm went off. Something more to add to the memory banks, gees it sure is getting crowed in there.


__________________________________________________
If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

6Back to top Go down    Re: What is this lock for? on Sat Apr 08, 2017 12:37 am

kioolt

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It is a factory alarm. Look at Max BMW herehttp://www.maxbmwmotorcycles.com/fiche/DiagramsMain.aspx?vid=51750&rnd=12082016 then go down to diagram 65_0324. I turn my alarm by just turning the key after parking it. Does your bike have the alarm box mounted in the tool box?


__________________________________________________
2004 R1150RT 183,000 miles
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total418,600 BMW miles

AMA,BMWRA,BMWMOA


The cheapest thing on a BMW is the nut that connects the handlebars to the seat.
    

7Back to top Go down    Re: What is this lock for? on Sat Apr 08, 2017 12:42 am

RicK G

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It was not my bike it was on. I think from memory the alarm box was in the tail section. It was on a bike I did some work on and when I asked the owner said it was factory but apparently he didn't know either.


__________________________________________________
If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

8Back to top Go down    Re: What is this lock for? on Sat Apr 08, 2017 12:45 am

kioolt

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I'm sorry, when I read your post I was thinking the original poster came to the conclusion that it wasn't a factory alarm from my post.

I've had my 91 K100LT since new and this alarm system was on it the day I bought it. I seldom use it but I do keep the backup battery live in it since I found out it has one.


__________________________________________________
2004 R1150RT 183,000 miles
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total418,600 BMW miles

AMA,BMWRA,BMWMOA


The cheapest thing on a BMW is the nut that connects the handlebars to the seat.
    

9Back to top Go down    Re: What is this lock for? on Sat Apr 08, 2017 12:51 am

Inge K.

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@RicK G wrote: I think from memory the alarm box was in the tail section.

It was in the tail section on the 4V and low seat models, then the pushbutton for the seat was disabled.

Here's a picture from the under seat mounting.



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

10Back to top Go down    Anti-theft keyed switch on Mon Sep 11, 2017 6:26 pm

geharper

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I'm struggling with the same thing. I bought my 85 a few years ago and after it sat a while I had to replace the battery and now when I turn the ignition on, the horn blows. I'm trouble shooting and found the device under the seat and finally found the keyed switch on the relay box. I had to order a set of tri-wing screw drivers to get the cover off of the under seat module and I see a battery that is swelled on each end, so its surely bad. Its a varta of some type. Still working to get the wiring connector off of the module.

    

11Back to top Go down    Re: What is this lock for? on Mon Sep 11, 2017 6:41 pm

Stan

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On my 2 bikes I can slip the module, with the wiring still connected, out of the plastic case and let it hang whilst I deal with the battery. The less I disturb connections that are behaving the better.


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1983 K100basic vin 0003960 colour red
1987 K100RT vin 0094685 colour, orange peel, sorry, pearl
    

12Back to top Go down    Re: What is this lock for? on Mon Sep 11, 2017 11:55 pm

TacKler

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ainsjac wrote:On my 2 bikes I can slip the module, with the wiring still connected, out of the plastic case and let it hang whilst I deal with the battery. The less I disturb connections that are behaving the better.

+1


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Red 1991 K75S
    

13Back to top Go down    Re: What is this lock for? on Tue Sep 12, 2017 8:36 am

Inge K.

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@geharper wrote: Still working to get the wiring connector off of the module.





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

14Back to top Go down    Re: What is this lock for? on Tue Sep 12, 2017 9:44 pm

Bucky

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Anything worth doing is worth overdoing! (B-52 Crewdog Phil Smith) 1985 K100RT
    

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