BMW K bikes (Bricks)

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Matthew-Brisbane

Matthew-Brisbane
Life time member
Life time member
Hello all having a car park itself on my bike at new years eve Im slowly bring her back to life 
The next stage of work is front nose cone / head light 

I have an 86 Rs which has the on / off switch on the right hand cluster 
A few people have told me to cut a relay into this switch to stop a fault 

Also who has changed over to led lamp or the xon lamps ?


__________________________________________________
1986 K100 RS Motorsport
#### K100 RS Project 
2011 R1200 GS
    

RicK G

RicK G
admin
admin
The switch is a bit marginal at best so a relay will make it last. As for the LED I haven't found one yet that has a good focal point. To get enough light the area of LED is large so destroying the pin point of light that is needed, especially for the right side cut off for low beam.
They are fairly cheap so every now and then I try again.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

Point-Seven-five

Point-Seven-five
Life time member
Life time member
Best way to easily prevent switch damage and increase light output is the Eastern Beaver headlight relay harness.

https://www.easternbeaver.com/Main/Wiring_Kits/H4_Kits/h4_kits.html

I have these beautiful harnesses on all my bricks.  One of the first things I do when I get a new bike.


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

92KK 84WW Olaf

avatar
Life time member
Life time member
A relay will improve the light a bit.

While you are doing it swap the bulb holder for a ceramic one. You buy them in pairs very cheap.

After that you can upgrade the halogen H4 bulb to 80 100 110 130 160W if you use appropriate wiring when you wire in the relay. 160W is brilliant. You can focus the light down more and it avoids causing dazzle.

Works darn well. Always done it in cars and bikes and now doing it on the Ks. I don't find LEDS good because you really need different reflectors and lenses for them.


__________________________________________________
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 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 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
    

duck

duck
Life time member
Life time member
I run relays and beefy wiring with 100/90W "Xenon" bulbs that I get off of Ebay for about $8/pair shipped. (Despite the Xenon in the name they are not actual HID bulbs as real HID bulbs would generate a lot of scatter from the stock reflector.)  Yeah, they're cheap Chinese made bulbs but the "worst" one I got lasted 20K+ miles and at the low cost I always have a spare in the tail cowl.

In the RS/RT/LT headlight they do really well so that I can do 80+ MPH at night with the high beam on and see where I'm going.  (The speed limit in Montana on I-90 is 80 MPH so you can ride 89 MPH without getting a ticket.)

On several of my Ks I also run Hella Micro DE  and FF50 aux lights that I converted to 35W HIDs.  These put out BOATLOADS of light in wide patterns - enough to land a small plane.  (I have them tied into my high beam and am very judicious in using them as they easily blind oncoming traffic.)

LED H4s: These were crap initially but in the last couple of years a number of really good ones have come into the market.  They vary widely in both price and quality but look on Amazon and you can find decent ones with lots of good ratings.  The good ones have fans on the backs of them so clearance might be an issue so I'd opt for one with the shortest rear end.


__________________________________________________
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 (x2)
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
    

Stumpy

Stumpy
Silver member
Silver member
@duck wrote:I run relays and beefy wiring with 100/90W "Xenon" bulbs that I get off of Ebay for about $8/pair shipped. (Despite the Xenon in the name they are not actual HID bulbs as real HID bulbs would generate a lot of scatter from the stock reflector.)  Yeah, they're cheap Chinese made bulbs but the "worst" one I got lasted 20K+ miles and at the low cost I always have a spare in the tail cowl.

In the RS/RT/LT headlight they do really well so that I can do 80+ MPH at night with the high beam on and see where I'm going.  (The speed limit in Montana on I-90 is 80 MPH so you can ride 89 MPH without getting a ticket.)

On several of my Ks I also run Hella Micro DE  and FF50 aux lights that I converted to 35W HIDs.  These put out BOATLOADS of light in wide patterns - enough to land a small plane.  (I have them tied into my high beam and am very judicious in using them as they easily blind oncoming traffic.)

LED H4s: These were crap initially but in the last couple of years a number of really good ones have come into the market.  They vary widely in both price and quality but look on Amazon and you can find decent ones with lots of good ratings.  The good ones have fans on the backs of them so clearance might be an issue so I'd opt for one with the shortest rear end.
I have one fitted to my K100RT, it fits fine, it is just awkward to fit.


__________________________________________________
BMW K100RT 0095857
    

Matthew-Brisbane

Matthew-Brisbane
Life time member
Life time member
@Point-Seven-five wrote:Best way to easily prevent switch damage and increase light output is the Eastern Beaver headlight relay harness.

https://www.easternbeaver.com/Main/Wiring_Kits/H4_Kits/h4_kits.html

I have these beautiful harnesses on all my bricks.  One of the first things I do when I get a new bike.

Hello Point - Seven  - Five 

Which of the many kits available is correct one for the K100  ?


__________________________________________________
1986 K100 RS Motorsport
#### K100 RS Project 
2011 R1200 GS
    

duck

duck
Life time member
Life time member
Just email Jim Davis (Eastern Beaver owner) and ask him which is the best kit for a K. He used to own a K100RS and knows K bikes well. (Tell him Duck says hi.)


__________________________________________________
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 (x2)
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
    

DadofHedgehog

DadofHedgehog
Silver member
Silver member
@Matthew-Brisbane wrote:Hello all having a car park itself on my bike at new years eve Im slowly bring her back to life 
The next stage of work is front nose cone / head light 

I have an 86 Rs which has the on / off switch on the right hand cluster 
A few people have told me to cut a relay into this switch to stop a fault 

Also who has changed over to led lamp or the xon lamps ?

I strongly recommend a Cyclops LED bulb. I crossed the United States this past Summer with it on my K75.

https://www.cyclopsadventuresports.com/Cyclops-100-H4-LED-headlight-bulb_p_192.html


__________________________________________________
PRESENT:
1995 K75T.  I am the 3d owner.  Bought it in June 2019 with 6,242 miles on the odo.
1991 K100RS 4-valve attached to a 1990 Flexit sidecar. I am at least the 3d owner. Bought with 21,00+ miles on bike's odo.

PAST:
old (indeterminate age) Ural + sidecar
1997 Buell S3T Thunderbolt
1982 BMW R100CS
1974 Kawasaki KZ400
1970 Suzuki Titan
    

Point-Seven-five

Point-Seven-five
Life time member
Life time member
What is a K75T?  What headlight does it have?


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

Matthew-Brisbane

Matthew-Brisbane
Life time member
Life time member
@duck wrote:Just email Jim Davis (Eastern Beaver owner) and ask him which is the best kit for a K. He used to own a K100RS and knows K bikes well. (Tell him Duck says hi.)

Thanks Duck  

Think that there may need to be a  group post to OZ  to reduce the  postage from USA   

Mick and Paul  and myself in QLD   so far


__________________________________________________
1986 K100 RS Motorsport
#### K100 RS Project 
2011 R1200 GS
    

Laitch

Laitch
Life time member
Life time member
@Matthew-Brisbane wrote:Think that there may need to be a  group post to OZ  to reduce the  postage from USA 
The Eastern Beaver site indicates that it is located in Japan and ships from Japan.


__________________________________________________
1995 K75 81,000 miles
Headlight globe upgrade / relay upgrade Usa-lo10
    

13Back to top Go down   Headlight globe upgrade / relay upgrade Empty Headlight relay Tue Jan 28, 2020 9:11 pm

daveyson

daveyson
Life time member
Life time member
I'm looking at doing this too. I was just thinking of two relays (the ones with a fuse holder)  and some wire good enough for battery positive .


__________________________________________________
11/1985 bmw k100rt (late model)  Vin. 0090567
 ~120,000 km
    

duck

duck
Life time member
Life time member
@Point-Seven-five wrote:What is a K75T?  What headlight does it have?

A K75T is a bike originally produced as a K75C from the Fatherland but modified by BMW NA to make it a better bike for touring by installing a K100 standard headlight, adding a handlebar mounted fairly large windscreen and full-sized system cases.

Headlight globe upgrade / relay upgrade K75t.h1


__________________________________________________
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 (x2)
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
    

brickrider2

brickrider2
Life time member
Life time member
I've used Eastern Beaver kits on airhead BMWs in the past and found them to be first rate.  
Since my K1100LT is somewhat pulled apart now due to the repair on the ABS component, I plan to fit a headlight relay.  Mulling over the underlying reasons -- being the brighter light and preservation of the switch gear -- I wonder what the collective wisdom of the forum might be as far as a relay for the horns, as well.  
What say?   Question


__________________________________________________
1996 K1100LT
    

Point-Seven-five

Point-Seven-five
Life time member
Life time member
@brickrider2 wrote:I've used Eastern Beaver kits on airhead BMWs in the past and found them to be first rate.  
Since my K1100LT is somewhat pulled apart now due to the repair on the ABS component, I plan to fit a headlight relay.  Mulling over the underlying reasons -- being the brighter light and preservation of the switch gear -- I wonder what the collective wisdom of the forum might be as far as a relay for the horns, as well.  
What say?   Question
There already is a horn relay.


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

duck

duck
Life time member
Life time member
Another thing to consider if going LED H4 on a RS/RT/LT light is the mechanism that holds the bulb in place.

Earlier bikes use a locking ring so the rear end of the LED with the fan would need to be 31mm or less for the locking ring to fit around it:

Headlight globe upgrade / relay upgrade DV2rvrD


Later bikes have a squeeze or pinch type retaining mechanism which you could bend around an H4 LED with a larger diameter fan:

Headlight globe upgrade / relay upgrade NmgrQNZ


Something like this would probably work with the locking ring:
https://www.amazon.com/AUXITO-Headlight-Bulbs-000LM-6500K/dp/B07TQLK6SH/ref=sr_1_11?keywords=h4+led&qid=1580295994&s=automotive&sr=1-11


__________________________________________________
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 (x2)
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
    

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