BMW K bikes (Bricks)


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acftfliehr

acftfliehr
active member
active member
I've been trying to find the install drawing for this...  do any of you have one that I can look at?

Harness is P/N 71602358924

https://shop.maxbmw.com/fiche/PartsDetails.aspx?source=catalog&vid=52635&brand=BMW%23&diagram=LI_LEDADDON

    

Dai

Dai
Life time member
Life time member
- Identify the wires (pos and neg) by testing on a battery or 12 volt source. You can't damage it. I can only see a black wire and I'm not willing to bet that it's the earth wire
- Take the cover off the tail hump
- connect the earth wire to the brown wire
- connect the positive wire to the slate/yellow wire (grey with a yellow tracer, if you like)

Job done.

If you're talking about physically mounting it,

- see where the bracket sits in relation to the lower edge of the numberplate with the light along the lower edge of the numberplate
- mark the mudguard
- offer up the bracket to the same position
- drill holes as necessary
- you may need to drill the numberplate too to put bolts through both items and ensure it will sit back where it came from
-- alternatively, mount the bracket to the mudguard using dome head allen bolts because they are fairly low profile
-- remount the numberplate with double-sided tape which should be thick enough to clear the dome heads

[Edited in line with Duck's correction. Gah. I blame the 10yo port and the fact that I couldn't be bothered to find my glasses when looking at the wiring diagram]



Last edited by Dai on Sun Mar 12, 2023 10:34 am; edited 1 time in total


__________________________________________________
1983 K100 naked upgraded to K100LT spec after spending time as an RS and an RT
1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

duck

duck
Life time member
Life time member
Gray/Black is the tail light

Gary/Yellow is the brake light

If you want it to flash and then go solid I use these for my add-on LED brake lights:

https://www.ebay.com/itm/174157628360


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

acftfliehr

acftfliehr
active member
active member
Thanks Dai and Duck...  Figured it out with the bench battery..

Red and Brown were obvious.. (Pwr & Grnd) .

Grey/White was the tail lamp and the Yellow/White wire the brake light.

I basically hooked up the red and  Grey White together to the tail light then ran the ground to the ground to the assy. ground...  Paralleled the brake light with the existing circuit.   No issues with the BMU after install.

Duck, thanks for the link to the modulator  may use that on the brake light LED circuit..

Interesting that on my other K I have the same unit (but with red cover over white LED's) that I bought when these first came out and it pulses for a while then goes steady...  This new just goes on.  It has a white lens and red led's...

Got this from MAX's BMW.

    

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