BMW K bikes (Bricks)

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1Back to top Go down   Bake warning light Empty Bake warning light on Thu Feb 13, 2014 4:26 am

Bigsax

Bigsax
Gold member
Gold member
I have just swapped out all my light bulbs (except headlight) to LED and they look and work sensational. Problem though. The brake warning light on the instruments stays on. Regular bulbs must complete a circuit that LED do not. Any suggestions?


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Bake warning light Brick110
I stole this image, let me know if you want it back.
    

2Back to top Go down   Bake warning light Empty Re: Bake warning light on Thu Feb 13, 2014 4:32 am

Cleverbee

Cleverbee
active member
active member
No idea why, but sounds like you've sorted your own problem, would the cluster look odd if you retained the filament bulb for the brake warning light.....?

    

3Back to top Go down   Bake warning light Empty Re: Bake warning light on Thu Feb 13, 2014 4:45 am

xpc316e

xpc316e
Gold member
Gold member
Check out this guy's excellent advice on LED bulbs and the BMU:

http://classickbikes.com/ckb.tech/0.ckb.tech.files/bmu/bmu.htm

His whole site is a mine of great information.


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VIN 0191428, 1991 K100LT, formerly owned by Lancashire Constabulary. This old warhorse is now 'out to grass' and living in retirement in Suffolk, where it will be showered with appropriate love and care.

VIN 6459609, 1992 K1100LT, another ex-Police machine, even though she now looks like she is a former fire engine.
    

4Back to top Go down   Bake warning light Empty Re: Bake warning light on Thu Feb 13, 2014 4:48 am

Bigsax

Bigsax
Gold member
Gold member
Thanks Cleverbee
I was hoping to hold that option for later. It is such a pain to get at I was hoping someone might suggest something easier. like cutting a wire or something



Last edited by Bigsax on Thu Feb 13, 2014 4:56 am; edited 1 time in total


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Bake warning light Brick110
I stole this image, let me know if you want it back.
    

5Back to top Go down   Bake warning light Empty Re: Bake warning light on Thu Feb 13, 2014 4:51 am

Bigsax

Bigsax
Gold member
Gold member
@xpc316e wrote:Check out this guy's excellent advice on LED bulbs and the BMU:

http://classickbikes.com/ckb.tech/0.ckb.tech.files/bmu/bmu.htm

His whole site is a mine of great information.
 Brilliant!

Thanks xpc316e


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Bake warning light Brick110
I stole this image, let me know if you want it back.
    

6Back to top Go down   Bake warning light Empty Re: Bake warning light on Thu Feb 13, 2014 5:13 am

AL-58

AL-58
Life time member
Life time member
Does the bake warning light tell you when the scones are ready?
Al


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'87 K100RS/HRD sidecar (1100 motor)  sc25 
'92 K100RS-16v (Paint it Black)

'87 K100RT with Paralever backend

"When I'm too old and too foolish to handle a sidecar I'll buy a Sportsbike"

Bake warning light K-dogs10
    

7Back to top Go down   Bake warning light Empty Re: Bake warning light on Thu Feb 13, 2014 5:17 am

Inge K.

Inge K.
VIP
VIP
It's when the airfilter housing is hot enough to put the scones in.


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

8Back to top Go down   Bake warning light Empty Re: Bake warning light on Thu Feb 13, 2014 10:55 am

Two Wheels Better

Two Wheels Better
Moderator
Moderator
At first I thought it meant Bakelite, until I read the thread...

Scones are ready at my house!


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Sometimes I lie awake at night, and I ask, "What can I do to keep my life from going by so fast?" Then a voice comes to me that says, "Try slowing down at the corners." 

~Charlie Brown

1970 R60/5, '77 R75/7-R100, '85 K100'87 K75C, '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei  - Beemers owned still or sold.

    

9Back to top Go down   Bake warning light Empty Re: Bake warning light on Thu Feb 13, 2014 12:59 pm

klamityboy

klamityboy
Gold member
Gold member
@Bigsax wrote:I have just swapped out all my light bulbs (except headlight) to LED and they look and work sensational. Problem though. The brake warning light on the instruments stays on. Regular bulbs must complete a circuit that LED do not. Any suggestions?
I have upgraded to all LED including the Brake Monitor bulb. Mine briefly lights when the brake is pressed. Something along the lines of a filament bulb cannot respond quickly enough to the small pulse of electricity but the LED can. With regards to your problem, is it possible that the brake light bulb may have failed or the Bulb Monitoring Unit? Don't forget to depress the brake pedal and handle. As already stated in other posts, my electrical expertise is limited at best and should probably be confined to changing the AA batteries in the TV remote. I am however a frequent victim of Murphy's law. If this was me the brake bulb will have burned out exactly when I made a modification, thus my inclination to starting with the simplest and cheapest option first.

Good luck with the baking!!


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Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

10Back to top Go down   Bake warning light Empty Re: Bake warning light on Thu Feb 13, 2014 2:54 pm

tgolden

tgolden
Silver member
Silver member
Is it possible to switch to LEDs and keep the BMU intact and functional?

Everything I've read to date indicates that with LEDs, the BMU must be disabled.

Regards

    

11Back to top Go down   Bake warning light Empty Re: Bake warning light on Thu Feb 13, 2014 3:03 pm

klamityboy

klamityboy
Gold member
Gold member
@tgolden wrote:Is it possible to switch to LEDs and keep the BMU intact and functional?

Everything I've read to date indicates that with LEDs, the BMU must be disabled.

Regards
Works in mine. I just replaced the filament bulb with an LED and made no other changes. The only quirk is that the Bulb Monitor light will briefly and faintly flash when the brakes are applied. Only an issue at night and I find it oddly reassuring to know that the brake light has come on. Can't even see it during the day. There has been a suggestion, probably on Duck's page, that adding a resistor makes this quirk go away.


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Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

12Back to top Go down   Bake warning light Empty Re: Bake warning light on Thu Feb 13, 2014 4:25 pm

Brad-Man

Brad-Man
Life time member
Life time member
I personally don't need a warning light to know I'm baking...



Last edited by Brad-Man on Fri Feb 14, 2014 12:46 pm; edited 1 time in total

    

13Back to top Go down   Bake warning light Empty Re: Bake warning light on Thu Feb 13, 2014 6:32 pm

Bigsax

Bigsax
Gold member
Gold member
I have removed the BMU and shorted the wires in the electronics box as per the link earlier in this thread.
All good. I will just manually check my lighting system. LED's should last for thousands of hours anyway.


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Bake warning light Brick110
I stole this image, let me know if you want it back.
    

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