2
Re: Coil connections Mon Aug 29, 2022 5:11 pm
duck
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Life time member
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![Coil connections HPb31La](https://i.imgur.com/HPb31La.jpg)
For 93 and earlier K1100s, the wires to the 1/4 coil are black/red and green while the wires to the 2/3 coil are black/blue and green.
For 94 and later all wires are green so you figure it out from the length of the wires to the coils.
__________________________________________________
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
3
Re: Coil connections Mon Aug 29, 2022 5:38 pm
Jibe
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Silver member
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Hi all I was looking for is the pin id which pin gets a switched positive the rest is just straight forward. Thanks for the reply though
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4
Re: Coil connections Mon Aug 29, 2022 7:29 pm
duck
![duck](https://2img.net/u/4211/29/48/93/avatars/3060-34.jpg)
Life time member
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For 93 and earlier the green wires are switched positive from the ignition switch.
For 94 and later you need to use a voltmeter since both wires to each coil are green.
For 94 and later you need to use a voltmeter since both wires to each coil are green.
__________________________________________________
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
5
Re: Coil connections Mon Aug 29, 2022 7:46 pm
duck
![duck](https://2img.net/u/4211/29/48/93/avatars/3060-34.jpg)
Life time member
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I don't know if there are numbers by the pins on the bottom of the coils but if there are then Pin 2 is switched 12V from the ignition and Pin 1 is from the Motronic control unit. (Per the BMW wiring diagrams.)
![Coil connections 7mjNzwH](https://i.imgur.com/7mjNzwH.jpg)
![Coil connections 7mjNzwH](https://i.imgur.com/7mjNzwH.jpg)
__________________________________________________
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
6
Re: Coil connections Tue Aug 30, 2022 12:08 am
Laitch
![Laitch](https://2img.net/u/4211/29/48/93/avatars/4780-75.jpg)
Life time member
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If you've got a 2V Brick, Jibe, K1100 4V coils might eventually overheat your engine's ICU because their primary resistance is ≈80% lower than that of the 2V coils. Let us know how it turns out in the long run.
__________________________________________________
1995 K75 90,000 miles
7
Re: Coil connections Tue Aug 30, 2022 4:18 am
Jibe
![Jibe](https://2img.net/u/4211/29/48/93/avatars/7321-54.jpg)
Silver member
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Well don't you just hate people like me that rush into one problem to make possibly another later on down the road, with that said I've cancelled my order for the coils and will try a locate the correct coils for my 2V .....just desperate to get mine rideable before the weather turns. Thank you everybody for your advice it is very much appreciated but doesn't make me feel any different than silly
![:stuck_out_tongue_winking_eye: 😜](https://cdn.jsdelivr.net/emojione/assets/png/1f61c.png?v=2.2.7)
8
Re: Coil connections Tue Aug 30, 2022 6:36 am
92KK 84WW Olaf
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Life time member
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Put your bike and VIN in your signature and these things can get picked up earlier.Jibe wrote:Well don't you just hate people like me that rush into one problem to make possibly another later on down the road, with that said I've cancelled my order for the coils and will try a locate the correct coils for my 2V .....just desperate to get mine rideable before the weather turns. Thank you everybody for your advice it is very much appreciated but doesn't make me feel any different than silly![]()
Don't feel silly, lots of us read your posts too and didn't twig these were going on a 2v K either. The good thing is that it came to light.
__________________________________________________
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 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles.
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 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
9
Re: Coil connections Tue Aug 30, 2022 10:17 am
Laitch
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Life time member
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Finding a coil for the K100 2V is challenging. They seem to be out of production so you're needing to find new old stock somewhere or a functioning salvaged part. Don't hesitate too long before buying if you find one.
On the horizon is bikesmith's trial of a Dynatek coil in his Brick as described in this post and the posts following it. It has primary resistance figures close to the original figures of the 2V coil. He bought it when he discovered a faulty coil in his Brick while searching for the cause of an intermittent stall. He eventually narrowed that cause down to what he believes is a faulty fuel injection control unit. He indicates the Brick is running well and he'll be doing extended field testing of both the coil and the FICU on a trip soon.
Click on the links in the post to learn more.
On the horizon is bikesmith's trial of a Dynatek coil in his Brick as described in this post and the posts following it. It has primary resistance figures close to the original figures of the 2V coil. He bought it when he discovered a faulty coil in his Brick while searching for the cause of an intermittent stall. He eventually narrowed that cause down to what he believes is a faulty fuel injection control unit. He indicates the Brick is running well and he'll be doing extended field testing of both the coil and the FICU on a trip soon.
Click on the links in the post to learn more.
__________________________________________________
1995 K75 90,000 miles
10
Re: Coil connections Tue Aug 30, 2022 10:45 am
Jibe
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Silver member
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I did look into those funny enough. I've got a set coming from motoworks, unfortunately no S/N red tops which is gutting but I've got a very good deal some black tops and 6 month warranty at least I will have a spare. Just wanna get riding again. Planning a rebuild during the winter so I will carry on my quest for later coils or research a more fitting moden replacement
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