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K100-forum.com » Technical, repair and troubleshooting » Electrical » Repair of Headlight switch cannot switch to high beam

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coopz

coopz
active member
active member
Hi All its been a long time since on forum just getting my bike back on road. The headlight switch fails to flick to high beam its feels blocked headlight flash works ok and low beam  taken the switch off appears something is adrift inside or return spring etc has broken dI dont want to go in without some advice  Thanks in advance Coopz

    

Rick G

Rick G
admin
admin
That's a common problem. There is a small detent which needs to have a slight lead in by putting a taper on the plastic edge it passes over.
it is easy to over do the taper and then the switch will slip back to lo beam. I use an old points file or even a nail file, take it a tiny bit at a time, you will notice a big improvement with a very slight taper. take it easy and as soon as you feel a change stop at that.


__________________________________________________
"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 1999 K1100 LT with a Big Block 1200
    

duck

duck
Life time member
Life time member


__________________________________________________
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
    

Two Wheels Better

Two Wheels Better
Moderator
Moderator
I'm gunna move this from How To Tell Others How To Do something...to Troubleshooting, Electrical.


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"A long ride is the answer to a question you will soon forget!" ~ Anonymous
1977 R75/7-100, '93 K11/K12 Big Block, '93 K1100RS, '95 R100 Mystic, '96 K1100RS, 2 x '98 K1200RS, '06 K1200R & '09 K1300GT
    

Dai

Dai
Life time member
Life time member
If you're like me and just don't like using Scotchloks/wiring taps/whatever-they're-called, here's another solution that doesn't involve touching the OEM wiring harness  at all:

http://www.simpilot.net/~sc/misc/Eastern%20Beaver.pdf

As ever, once you've fixed the high beam switch, the idea is to get the load off the contacts so that they won't overheat again.


__________________________________________________
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
    

tinyspuds

tinyspuds
Life time member
Life time member
Dai wrote:If you're like me and just don't like using Scotchloks/wiring taps/whatever-they're-called, here's another solution that doesn't involve touching the OEM wiring harness  at all:

http://www.simpilot.net/~sc/misc/Eastern%20Beaver.pdf

As ever, once you've fixed the high beam switch, the idea is to get the load off the contacts so that they won't overheat again.
I love the quality of the EB kit (I use the H/L switch bypass loom and the aux fuse box) BUT UK residents, watch out for the import duty.


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106.
1986 K100RS in boxes. VIN 0141918.
1954 Royal Enfield 350 Bullet. Original.
2000 Hayabusa with Charnwood chair, Wasp forks and EZS wheels.
    

Point-Seven-five

Point-Seven-five
Life time member
Life time member
Big thumbs up for the Eastern Beaver harness.  The quality is amazing and it makes a big difference in light output from the reduced circuit resistance. 

It's one of the first mods I do when I get a bike.  Installed five of them so far.


__________________________________________________
Present: 1991 K100RS "Moby Brick Too"
 
Past:
1994 K75RT "Ilsa, She Wolf of the SS"
1988 K100RS SE "Special Ed"
1994 K75S "Cheetos"
1992 K100RS "Moby Brick" R.I.P.
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

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K100-forum.com » Technical, repair and troubleshooting » Electrical » Repair of Headlight switch cannot switch to high beam

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