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1Back to top Go down    Resistors for indicator lights on Mon Jul 04, 2016 9:46 am

Phil63

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Hi guys,
I am doing a cafe racer build and have wired in some new indicators, incandescents, and they are doing that hyper flash thing, I am guessing the new Bulbs are a lesser wattage? To fix this I am guessing I will need to wire a resistor into each line, could someone advise what size might do the trick. Or if there is any other fix.
Thanks in advance
Phil

    

2Back to top Go down    Re: Resistors for indicator lights on Mon Jul 04, 2016 10:46 am

klompy the grey brick

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Hi mate I just got a flasher can specifically for LED lights rather than attach a resistor in line with all 4 lights.
Shall let you know how it goes.

Cheers Klompy


__________________________________________________
KKlompy
1984 K100RS Silver VIN 0019026 Mitt eine Staintune Zorst.
1997 K1100LT Dark Grey VIN WB1052600W0237453.

Chassis number0019026
Vehicle code0503
SeriesK589
ModelK 100 RS 83 (0502 ( 0503 )
Body typeK 100 RS 83 (0502
Catalog modelECE
Production date1984 / 07
Engine0513)




    

3Back to top Go down    Re: Resistors for indicator lights on Mon Jul 04, 2016 1:26 pm

kioolt

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The reason for the hyper flashing depends on the type of flasher unit you are using. If it is a thermal flasher then the reason is low resistance. If it is an electronic flasher then the reason is high resistance. To help you we would need to know what type of flasher you have and also what bulbs you are using. Wattage of the bulbs would be helpful.

Also, LED's dothe need resistorsto be inparallel to them to lower the resistance to stop hyper flashing with electronic flashers. Most likelyLED's would not flash at all with thermal flashers because of their high resistance if you didn't put resistors in parallel to them.


__________________________________________________
2004 R1150RT 178,100 miles
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total413,700 BMW miles

AMA,BMWRA,BMWMOA


The cheapest thing on a BMW is the nut that connects the handlebars to the seat.
    

4Back to top Go down    Re: Resistors for indicator lights on Mon Jul 04, 2016 1:36 pm

kioolt

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As you can see in this video (https://www.youtube.com/watch?v=YKvzwq___P4) , the resistors are being put in parallel to the leds not inline.


__________________________________________________
2004 R1150RT 178,100 miles
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total413,700 BMW miles

AMA,BMWRA,BMWMOA


The cheapest thing on a BMW is the nut that connects the handlebars to the seat.
    

5Back to top Go down    Re: Resistors for indicator lights on Mon Jul 04, 2016 2:08 pm

duck

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Cut Pin 7 to kill the hyperflash:

Details:http://www.kbikeparts.com/classickbikes.com/ckb.tech/0.ckb.tech.files/ledoemflrelay/ledoemflrelay.htm


__________________________________________________
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
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

6Back to top Go down    Re: Resistors for indicator lights on Wed Jul 06, 2016 2:14 pm

Two Wheels Better

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duck wrote:Cut Pin 7 to kill the hyperflash:
Details:http://www.kbikeparts.com/classickbikes.com/ckb.tech/0.ckb.tech.files/ledoemflrelay/ledoemflrelay.htm

Drake, do you heat up and melt away the rubberised sealant on the 'black' version of the turn indicator relay or simply cut it away with a thin blade? I'm thinking of its loss of future waterproofing and don't wish to tear into it without having heard how you, and others, have opened the box sanitarily.


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'77 R75/7-1000cc, '87 K100RS, '93 K12 Big Block, '94 R100 Mystic, '03 K1200GT, '04 R1150RT, '06 K1200R, '07 K1200R & '09 K1300GT
    

7Back to top Go down    Re: Resistors for indicator lights on Wed Jul 06, 2016 3:18 pm

duck

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I just pry the flasher relay open with a small screwdriver and then pop it back together after performing the operation.

Waterproofing, really? I've never heard of anybody getting water in the K relay box, much less any flooded relays. I suppose if I cared about waterproofing I would put some RTV around the edge when reassembling.


__________________________________________________
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
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

8Back to top Go down    Re: Resistors for indicator lights on Thu Jul 07, 2016 4:41 am

Phil63

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Hi guys, my indicators are not LED, I suspect they are a lesser wattage than OEM and with less resistance are going hyper. So can I still do the snip no 7 fix?
Cheers

    

9Back to top Go down    Re: Resistors for indicator lights on Thu Jul 07, 2016 6:54 am

Dai

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Best check the bulbs first. Anything between 10 and 21 watts should be okay; IIRC you can get 10, 12, 18 and 21 watt 12 volt single-filament bulbs. Here in the UK the legally-required flash rate is between 60 and 120 flashes a minute. If you've bought Chinese indicators then my best guess is that they are 4 watt bulbs, in which case I'd ask; are they really bright enough? Snipping the pin should fix the problem but I'd be looking at luminosity first. Just my 2C worth Very Happy


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

10Back to top Go down    Re: Resistors for indicator lights on Thu Jul 07, 2016 7:48 am

kioolt

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Silver member
Phil63 wrote:Hi guys, my indicators are not LED, I suspect they are a lesser wattage than OEM and with less resistance are going hyper. So can I still do the snip no 7 fix?
Cheers

Lesser wattage is higher resistance.


__________________________________________________
2004 R1150RT 178,100 miles
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total413,700 BMW miles

AMA,BMWRA,BMWMOA


The cheapest thing on a BMW is the nut that connects the handlebars to the seat.
    

11Back to top Go down    Re: Resistors for indicator lights on Thu Jul 07, 2016 10:52 am

duck

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Life time member
Phil63 wrote:Hi guys, my indicators are not LED, I suspect they are a lesser wattage than OEM and with less resistance are going hyper. So can I still do the snip no 7 fix?
Cheers

You can snip #7 for any bulb type. All it does is disable hyperflash.


__________________________________________________
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
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

12Back to top Go down    Re: Resistors for indicator lights on Thu Jul 07, 2016 11:28 am

Two Wheels Better

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Moderator
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On bended knee I humbly thank you for taking time from your day, sharing your learned wisdom among us and answering questions freely.

In my case, snipping #7 worked with LED indicators front and rear. A strong magnifying glass helped. The flash rate is barely changed from original, perhaps crisper is how one could describe it. No need to add the relative complexity of inline resistors either bulbs or LED with Duck's easy 'fix'.


__________________________________________________


'77 R75/7-1000cc, '87 K100RS, '93 K12 Big Block, '94 R100 Mystic, '03 K1200GT, '04 R1150RT, '06 K1200R, '07 K1200R & '09 K1300GT
    

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