BMW K bikes (Bricks)

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1Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty OE BMW K100 Auxiliary Light Kit Sat Jun 05, 2021 10:19 am

Karl P H

Karl P H
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This kit is designed to mount two large rectangular Bosch lights on two arms clamped around the fork legs at the lower triple clamps of a K100, As such the lights cannot be mounted in this fashion to an RS/RT/S as the bodywork is in the way. On my 1985 RS, the lights were mounted utilising the engine protection bars. The electrical connection was a 'plug & play' operation.

However, I've struck an electrical road block in fitting the kit to my 1992 RS. The bikes electrics have a white female 4 wire plug (green, red, black and grey - I think). However, the wiring harness for the Light Kit also has a female plug, albeit a 7 point black one. But although it also has 4 wires attached, the colours are brown, yellow, white and red/yellow.

My plan is to make up four wires to connect the two plugs. Using a test lamp will establish the power source, then switching to an LED will identify positive and negative. But that's the limit of my auto electrical knowledge.

How can I establish which colour wire from the bike connects with which colour on the wiring harness?

    

2Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sat Jun 05, 2021 4:44 pm

Dai

Dai
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White is high beam
Yellow is dip (low) beam
Brown is earth
Red/yellow is a fused feed that normally serves the 'connector for special equipment' (police kit). In this case it is providing power for the high and dip beam, probably via a relay.

So, based on that and you description of a seven-pin plug, the lighting kit plugs directly into the connector for special equipment. I don't recognise your description of the bike connector, but if it's a four-pin round plug then it's most likely the optional alrm connector (red/yellow, brown, green/brown and green/slate {grey}). A close-up picture would help, as would a general picture of the relay box. I've never heard of a K not being fitted with the connector for special equipment. Go have a dig around in the relay box - it's possible the seven-pin connector has got pushed to the bottom of the box out of sight.


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

3Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sat Jun 05, 2021 6:27 pm

Karl P H

Karl P H
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Thank you, Dai. Your reply is very much appreciated.

I'll pull the tank off again and have another look for the seven pin connector.

As a newbie to the forum, I would have attached a picture, but didn't know I could nor know how to go about it. At the bottom of this window it states;
"Attach a document (NO PICTURES), Documents only )"

    

4Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Lights Sat Jun 05, 2021 7:27 pm

daveyson

daveyson
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I click on documents only, then go to my gallery and select the photo, that works for me anyway.


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

5Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sun Jun 06, 2021 4:06 am

Karl P H

Karl P H
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Well, now I've hit a road block. The white four pin plug is clearly visible. But the black seven pin plug is not there.


__________________________________________________
Pearl White K100RS (16v)
2/92 VIN;WB1052205L0202000
    

6Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sun Jun 06, 2021 6:52 am

Dai

Dai
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So... that's a new one on me. Daft question: some of those seven pin plugs were white - there isn't one lurking there unexpectedly? I hope the fuel tank is still off because... please check fuse 5. There should be a red wire and TWO red/yellow wires on there. As you've established, one goes to the four pin connector. Where does the second one go? Has it been cut off?

Do you know anyone who could do a simple electrical job? I do have a solution if the seven pin connector is completely AWOL.

Also, using Daveyson's suggestion, can you try for a picture of the relay bopx please?


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

7Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Lights Sun Jun 06, 2021 7:16 am

daveyson

daveyson
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Because it's a K100 RS, but a '92 model, so it's a 16 valve one, with the wiring way different. Your extra lights plug is probably for the earlier version. It would probably be good if you clean the wiring for a better description of the wire colour's to the plug, most will have two colours. 

The lights plug probably looks like it would fit into this earlier version plug. 

OE BMW K100 Auxiliary Light Kit Img_2038


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

8Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sun Jun 06, 2021 10:21 am

Laitch

Laitch
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@Karl P H wrote:On my 1985 RS, the lights were mounted utilising the engine protection bars. The electrical connection was a 'plug & play' operation.
On your '85, how many options did you have for lighting the lamps—both, left or right, or something else? Did it have a separate switch to operate those lamps?


__________________________________________________
1995 K75 81,000 miles
OE BMW K100 Auxiliary Light Kit Usa-lo10
    

9Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sun Jun 06, 2021 5:00 pm

Karl P H

Karl P H
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OE BMW K100 Auxiliary Light Kit 20210615

    

10Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sun Jun 06, 2021 5:18 pm

Karl P H

Karl P H
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After multiple attempts, I finally succeeded using my phone.

Yes it is a 1992 K100RS and have on occasion discovered that this model has some unique aspects, unlike previous or subsequent models. No idea  now how I can wire in Kit.

The bike is back together. That was a saga too as the two rubbers that the rear of the tank required replacement.

    

11Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Lights Sun Jun 06, 2021 7:26 pm

daveyson

daveyson
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I'm wondering if the white cylinder on the left is a plug with a dust cap. Going by Clymer's (May 2007, pages 698, 699) the burglar plug wires are green/brown, green/grey, brown, and red/grey. The additional instruments plug wires are brown, green/black, grey/blue, and yellow. I'd say the plug on the right is the burglar one. Dunno if they're both female plugs.


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

12Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sun Jun 06, 2021 11:26 pm

Karl P H

Karl P H
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While looking for the, hopefully secreted, black seven pin connector, my recollection of the 'white dust cap' is that the cap is fixed and resin filled. I've no idea of the colours of the wires that it covers.

Looks like the tank may need to be removed - again. I may even become competent at it!

    

13Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Lights Mon Jun 07, 2021 1:36 am

daveyson

daveyson
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Anyway that still won't do it for you. I'm not familiar with 16 valve versions and got the additional instruments plug mixed up with special equipment plug. I'm guessing you might have to run a wire straight from the battery with a fuse and relay.


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

14Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Mon Jun 07, 2021 4:44 pm

Dai

Dai
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Nope. The 1992 K100RS does NOT have the connector for special equipment. Thanks BMW. Really clever that - leave it off the last version of the K100 but have it on all the others. Looks like the CSE red/yellow power feed has been repurposed for the Moronic unit (note the missing 't' - yes the spelling error is on the Clymer wiring diagram right in front of me!).

Karl: I can do you a wiring diagram and tell you the best places to pick up the wires from, but you'll need someone who has the tool to crimp the connectors. Pliers just won't cut it. Does the original kit have a switch that you can kill the lights with, or were they permanently on with the headlight? Also, do they have a high/dip beam in each one or is one high beam and one dip beam?

Laitch: the '85 would have been a plug-in-and-ride option. From Karl's description of his '85 setup, I'm pretty sure the wiring is the same as the Eastern Beaver headlight relay kit. Which reminds me: I've been meaning to do a DIY diagram of that for people too.


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

15Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Mon Jun 07, 2021 5:40 pm

Laitch

Laitch
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@Dai wrote:Laitch: the '85 would have been a plug-in-and-ride option. From Karl's description of his '85 setup, I'm pretty sure the wiring is the same as the Eastern Beaver headlight relay kit. Which reminds me: I've been meaning to do a DIY diagram of that for people too.
I was just asking how it operated, whether it had a separate switch or was integrated. Somehow, readers thought I was trying to come up with a solution.  Not likely. Laughing  I still don't know except maybe electricity probably plays a major role.


__________________________________________________
1995 K75 81,000 miles
OE BMW K100 Auxiliary Light Kit Usa-lo10
    

16Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Mon Jun 07, 2021 8:22 pm

Karl P H

Karl P H
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You are correct. Fitting the kit to my ‘85 RS was very much a ‘Plug & Ride’ experience. The most difficult aspect was mounting the lights themselves. Being designed for the naked K100, the lights’ mounting brackets clamp around the fork legs at the lower triple clamp. There were two blind, threaded holes in the back of the triple clamp to locate them. The RS’s  Engine Protection Bars were utilised in this instance. I expected a similar situation with this ‘brick’.


The lenses of the two lights in the kit are different. One has vertical ribs, throwing a flat beam. My recollection (it was more than twenty years ago!) is that with the headlights and kit switched on, it operated at low  beam. (It may also have stayed on at high beam?) The other lens is clear and throws a spot beam, operating with high beam.


The K100 Auxiliary Lighting Kit comprise of;

  • Wiring Harness. This has two relay sockets with relays fitted; the infamous seven pin black connector; a plug for the switch; and two plugs, one for each of the lights.
  • On/Off switch. Which I have fitted into the dash pad.
  • Bosch Auxiliary Lights (x2). One ‘ribbed’ lens and one clear
  • Driving Light wires (x2). To connect the lights to the harness.
  • Mounting Brackets (x2). To mount the lights to the fork legs. (I now have two pair of these, surplus to requirements!).
  • Screws (x2). To mount the relay sockets into the relay box.


As my current RS is not fitted with Engine Protection Bars, I plan on utilising the four blind, threaded holes used for the lower Engine Protection Bar mounts.A friend and fellow BMWMCC(Vic.) member who is a Metal Magician is assisting me in this project. He fabricated my bike's beautiful, stainless steel Top Box Rack.

    

17Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Mon Jun 07, 2021 9:15 pm

Laitch

Laitch
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Twenty-years is a long, backward walk down Memory Lane. Smile  Thanks for providing the details, Karl.


__________________________________________________
1995 K75 81,000 miles
OE BMW K100 Auxiliary Light Kit Usa-lo10
    

18Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Tue Jun 08, 2021 1:11 am

Karl P H

Karl P H
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@Dai wrote:Karl: I can do you a wiring diagram and tell you the best places to pick up the wires from, but you'll need someone who has the tool to crimp the connectors. Pliers just won't cut it. Does the original kit have a switch that you can kill the lights with, or were they permanently on with the headlight? Also, do they have a high/dip beam in each one or is one high beam and one dip beam?

Thank you Dai. That would be very much appreciated. My recollection (it was more than twenty years ago!) is that with the headlights and kit switched on, it operated at low  beam. (It may also have stayed on at high beam?) The other lens is clear and throws a spot beam, operating with high beam.

    

19Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Thu Jun 10, 2021 11:12 am

Dai

Dai
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PDF Here

Let me know if there's anything you don't quite understand. Always remember that the only dumb questions are the ones you don't ask.


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

20Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sat Jun 12, 2021 3:19 am

Laitch

Laitch
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There's apparently a storm of dumb questions going on here after Dai's posting of his outstanding PDF wiring guide. Wear full PPE.


__________________________________________________
1995 K75 81,000 miles
OE BMW K100 Auxiliary Light Kit Usa-lo10
    

21Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Lights Sat Jun 12, 2021 11:04 am

daveyson

daveyson
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Hi Dai,

Thanks, that is outstanding. 

Could you help me out again. 

Could Karl use a normal relay, with an 87 pin instead of 87a, I think you've explained the "a" before but I can't remember it. 

Also by Aussie law I think (that is, dunno) fog lights can only be used on low beam, and auxiliary driving lights only on high beam. I guess it's the same in the old country (that's another dunno) 

I know this sounds odd but I think Karl's ribbed light would be for low beam and his clear light for high beam. Sorry about the number of if's.

If so, would that mean Karl needs two relays and two switches?


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

22Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sat Jun 12, 2021 12:02 pm

Laitch

Laitch
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@daveyson wrote:Sorry about the number of if's.
There's really only one if, if you aren't counting if's. One if seems reasonable if you know what I mean.


__________________________________________________
1995 K75 81,000 miles
OE BMW K100 Auxiliary Light Kit Usa-lo10
    

23Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Lights Sat Jun 12, 2021 12:11 pm

daveyson

daveyson
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True, but the number of dunno's is greater than the sum of them.


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

24Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sat Jun 12, 2021 1:48 pm

Dai

Dai
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Dunno if I dunno.

OE BMW K100 Auxiliary Light Kit 44271 

https://www.k100-forum.com/t15966-relays-relays-relays-types-and-substitution

I'm fairly sure from Karl's OP that the aux lights themselves are wired like an Eastern Beaver Relay kit, so they switch with dip and high beam i.e. there's already two relays in the lighting kit. That is the only reason I can think of for having both the yellow (dip) and white (high) beam wires on the lighting kit plug.

The switch simply prevents the relay from pulling in when the bike is turned on, so no power gets supplied to the headlight kit and both relays stay off at all times.

Wait one... or two... or 100. DIY Eastern Beaver Relay Kit diagram coming up.

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

Also corrected the original doc. Daveyson; u wuz write. It's Pin 87, not Pin 87a. A five pin relay will work because the layout is the same.


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

25Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Lights Sat Jun 12, 2021 8:25 pm

daveyson

daveyson
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Thanks Dai,

Now I understand the plug to the additional lights.


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

26Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sun Jun 13, 2021 2:16 am

Karl P H

Karl P H
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Thank you for the wiring diagram Dai.


I’m in awe of the knowledge, expertise and  experience demonstrated in the various posts. I feel like a preschooler hanging out with the high school kids.


The kit’s wiring harness has two identical Helle/BMW 4 pin relays. They seem to have both Hella and BMW part numbers as well as being stamped 484. One has four wires (brown, white, red/yellow & green/white). The other has five wires (brown, yellow, 2x red/yellow & green/yellow) In addition, there is;



  • One black 7 pin plug (with brown, yellow, yellow/red & white wires) - to plug into the bikes electrics.
  • One black 2 pin plug (with brown and yellow/green wires) to plug into one light
  • One black 2 pin plug (with brown and white/green wires) to plug into the other light and,
  • One white 2 pin plug (with two brown wires) to plug into the switch.



Dai’s ‘4 way female terminal block’ would be the two black 2 pin plugs to the lights. The ‘optional toggle switch’ would be the white plug.


Looking up my copy of the Clymer manual referenced by daveyson. Top right of page 698 is a ’Plug connection burglar alarm’. The four wires listed are G/Br, G/Gr, Br & R/Gr.Using the Color Code at the top right of page 699 gives me; Green/Brown, Green/Grey, Brown but R/Gr is not listed - Red/Grey?

Using a test lamp, I believe two are power, + and -. Could this indirect connections be used in place of the battery connection and fuse on Dai’s wiring diagram? Or is it possible to pick up the four wires (brown, yellow, yellow/red & white wires) elsewhere? Three of them are the headlight globe  I haven’t found Y/R yet in Clymer. Just my luck it’s not there on my model!


__________________________________________________
Pearl White K100RS (16v)
2/92 VIN;WB1052205L0202000
    

27Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Lights Sun Jun 13, 2021 7:13 am

daveyson

daveyson
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I think it's best to stick with Dai's plan. Getting full power straight from the battery is best, Clymer's doesn't give wire or fuse sizes on the drawing. The red wire you make will go to the red/yellow of your light kit (not yellow/red) I think that's what's been said. 

Yep from your photo I think the wire to bugular is red/grey.


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

28Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sun Jun 13, 2021 12:52 pm

Dai

Dai
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Karl: almost but not quite. I am horrified to see the kit manufacturer using the earth return as the 'lights off' switch. Whoever thought of that deserves a major short-circuit right under his arse.

Let me add your lighting kit into the wiring diagram - won't be today; sometime in the next couple of days.


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

29Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Re: OE BMW K100 Auxiliary Light Kit Sun Jun 13, 2021 5:41 pm

Karl P H

Karl P H
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Thank you for your help and advice Dai. It is really greatly  appreciated that you would go so far above and beyond for a complete stranger.

Fitting these flights is a long term project. Through trial and error, I've roughed up a wooden frame to mount the lights in front of the front corners of the engine, utilising the bolt holes for the lower mounts for the engine protection bars. With a few tweaks,  the wood will be finessed into metal.

At the moment, Covid19 restrictions prevent a meeting with the fabricator. So there is no hurry



Last edited by Karl P H on Sun Jun 13, 2021 10:01 pm; edited 1 time in total


__________________________________________________
Pearl White K100RS (16v)
2/92 VIN;WB1052205L0202000
    

30Back to top Go down   OE BMW K100 Auxiliary Light Kit Empty Lights Mon Jun 14, 2021 5:29 pm

daveyson

daveyson
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I think there's also advantages with the switch on the earth side, what's the overriding reasons against it?


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

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