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Author Topic: Wiring help for 1990 cb125 no spark  (Read 3360 times)

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Offline Anderson J. Folts

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  • Posts: 48
Wiring help for 1990 cb125 no spark
« on: March 19, 2012, 07:37:55 pm »
I've got some help adapting 2 clone china CDI's to replace the super expensive CDI in my 1990 cb125, no of course, I can't get a spark. Here is a diagram of my wiring. There are probably more than a couple things wrong? The stater motor turns over.



I don't have the original wiring diagram
1977 Honda CB550f
1979 Yamaha XS650
1990 Honda CB125T
1975 Honda CB400F
1976 Honda CB400F
1977 Honda CB400F

Offline grcamna2

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  • I love to restore & travel. Keep'em Going Strong !
Re: Wiring help for 1990 cb125 no spark
« Reply #1 on: March 20, 2012, 04:43:17 pm »
andrsn,
   I would love to be able to help out...;I am very interested in this project CB125T twin & I'd like to own one.I had a CB125S a number of years ago and put MANY long trip miles on her at 55-60mph+  Great Fuel mileage !  ;)
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline Anderson J. Folts

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  • Posts: 48
Re: Wiring help for 1990 cb125 no spark
« Reply #2 on: April 02, 2012, 10:52:57 pm »
Not that anyone seems to care, but I was able to wire my bike with the 2 generic CDI's. Here is a simple diagram of the set up. My problem was stemming from the fact that the CDI needs AC power to run and the coils need dc.


1977 Honda CB550f
1979 Yamaha XS650
1990 Honda CB125T
1975 Honda CB400F
1976 Honda CB400F
1977 Honda CB400F

Offline grcamna2

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  • Really Old Timer ...
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  • Posts: 8,466
  • I love to restore & travel. Keep'em Going Strong !
Re: Wiring help for 1990 cb125 no spark
« Reply #3 on: April 03, 2012, 05:16:31 am »
You've got her firing ?
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.