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1Back to top Go down   Headlight Switch Help Needed Empty Headlight Switch Help Needed Thu Oct 04, 2012 12:28 pm

mikidymac

mikidymac
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I was cleaning my headlight switch last night and everything looked good except for the solder connection between the yellow and white wires for the low beam. As you can see in the picture it overheated and some of the solder is now making a connection with the wire next to it. My question is that it looks like it would simpley keep the low beam on all the time so I am not sure if it should be fixed? It would be nice to have the low on even when the high is on. I remember reading that there is a white wire that when connected keeps the low beam on with the high but I could not find the info. Does anybody know where this "white" wire is?

Headlight Switch Help Needed 20121010

Headlight Switch Help Needed 20121011


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1991 K100LT, 2004 KTM 450 EXC, 2005 Buell Blast, 2008 Polaris RZR
    

2Back to top Go down   Headlight Switch Help Needed Empty Re: Headlight Switch Help Needed Thu Oct 04, 2012 12:43 pm

Inge K.

Inge K.
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The white/yellow wire is the supply from the RHS switch assy.
The yellow wire is low beam.
The white wire is high beam.

I would highly advice to install relays in the light circuit, to avoid problems with this switch.........the weak link in the light circuit in our bikes.


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

3Back to top Go down   Headlight Switch Help Needed Empty Re: Headlight Switch Help Needed Thu Oct 04, 2012 12:44 pm

charlie99

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miki

as you can already see the switch mechanism is subject to over heating ... this happens when the contacts arc up a little .

as in other posts, most of us recon additional relays are a really good suggestion

cant help you with the extra wire ...and i just wonder if the headlight reflector could cope with all that heat in any case

best to reflow that solder joint ...and attempt to inspect the contacts ...and add relays quick smart before you have to buy a whole new mechanism , once the rot sets in better have a forward thinking plan .

just some thoughts



Last edited by charlie99 on Thu Oct 04, 2012 12:55 pm; edited 1 time in total


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cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OHeadlight Switch Help Needed Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

4Back to top Go down   Headlight Switch Help Needed Empty Re: Headlight Switch Help Needed Thu Oct 04, 2012 12:46 pm

mikidymac

mikidymac
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So with mine the white and yellow wires are now connected with solder would the high and low be on all the time? The blue light on the instrument panel is not always on. DO you know where the white wire that keeps the low beam on with the high is?


__________________________________________________
1991 K100LT, 2004 KTM 450 EXC, 2005 Buell Blast, 2008 Polaris RZR
    

5Back to top Go down   Headlight Switch Help Needed Empty Re: Headlight Switch Help Needed Thu Oct 04, 2012 12:47 pm

Motorandy123

Motorandy123
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I have this in the archives but never found it on mine;

Headlight Switch Help Needed UnplugForLowHighSeperate

I think you have high shorted to low. The white/yellow is the center. It ties to yellow for one and white for the other. I believe they go to that round special instrument switch so are tied there....


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MotoRandy123
1991 K75 "Special Edition"
    

6Back to top Go down   Headlight Switch Help Needed Empty Re: Headlight Switch Help Needed Thu Oct 04, 2012 12:52 pm

Inge K.

Inge K.
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To have low beam on together with high, jump the white/yellow and the yellow wire.............after you have installed relays.

But I do agree with Charlie, it could be that your reflector won`t be that happy about it.


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

7Back to top Go down   Headlight Switch Help Needed Empty Re: Headlight Switch Help Needed Thu Oct 04, 2012 12:58 pm

mikidymac

mikidymac
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The jumper was what I was looking for but mine did not have anything like that either. Guess I will get going on the relays.

Inge K. Could you provide a diagram of how you get the high and low on? I am not following your discription. I would assume the headlight wire for the new high beam relay would activate the low relay?


__________________________________________________
1991 K100LT, 2004 KTM 450 EXC, 2005 Buell Blast, 2008 Polaris RZR
    

8Back to top Go down   Headlight Switch Help Needed Empty Re: Headlight Switch Help Needed Thu Oct 04, 2012 1:11 pm

Inge K.

Inge K.
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@mikidymac wrote:Inge K. Could you provide a diagram of how you get the high and low on? I am not following your discription. I would assume the headlight wire for the new high beam relay would activate the low relay?
The jump wire you place between the solder points.

When at low beam, the low beam (yellow) wire would be connected to the supply (yellow/white) both through the switch and the jump wire.

When at high beam, the high beam (white) wire would be connected to the supply (yellow/white) through the switch as normal.....and the low beam connected via the jumper.

Headlight Switch Help Needed Lysbry10


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

9Back to top Go down   Headlight Switch Help Needed Empty Re: Headlight Switch Help Needed Thu Oct 04, 2012 2:36 pm

mikidymac

mikidymac
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I think I understand. So with the jumper the low beam would always be on as far as the switch is concerned. You are negating the low beam switch with the jumper.


__________________________________________________
1991 K100LT, 2004 KTM 450 EXC, 2005 Buell Blast, 2008 Polaris RZR
    

10Back to top Go down   Headlight Switch Help Needed Empty Re: Headlight Switch Help Needed Thu Oct 04, 2012 2:55 pm

Inge K.

Inge K.
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Correct, the low beam would stay on at all time, and high beam would be added....
when switch is in position.


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

11Back to top Go down   Headlight Switch Help Needed Empty Re: Headlight Switch Help Needed Thu Oct 04, 2012 4:25 pm

greggaz

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+1 ^^^^^


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Baja Red 1985 K100RT
    

12Back to top Go down   Headlight Switch Help Needed Empty Re: Headlight Switch Help Needed Thu Oct 04, 2012 5:34 pm

Motorandy123

Motorandy123
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There's 2 problems with that. One is the heat generated, the other
it that the ground for the headlight is meant for one circuit. Minimum
I'd run a new ground, better would be to add a relay. I just did this to
mine as the switch I had and the used one I got online both did not
work on both settings. I took the power from the load relief relay to
a new relay that is switched by the handlebar signal. I wired the low
beam to the 87a terminal so if the switch fails the low beam stays on.


__________________________________________________
MotoRandy123
1991 K75 "Special Edition"
    

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