nsr125cdi c1589b can I swap it with a c1626a

[RAY WATSON]

Hi,I have the standard issue with a 1990 JC20 which fires when it wants. I fitted a standard cdi from a 125 Honda and it sparks regulary but wont run The bike as if it has altered the ignition timing. So I purchased a C1626A unit off Ebay as it appeared identical to the orginal C1589B apart from one extra green and white wire wire . The cdi now sparks once and thats all?? Any help please with cross reference /interchange .

[stirlinggaz]

Hi,
have a look for Alains(resident nsr guru) nsr tips doc,
Im pretty sure this is referenced in there.
if you cant find the nsr tips doc or Alain hinself doesnt reply, pm me & I will e-mail you a copy.
cheers,
GAZ

[stirlinggaz]

hi,
heres an excerpt from Alains nsr tips document. (i hope you dont mind Alain?)
REMEMBER: if you change your CDI unit by a different country specs check carefully if it’s compatible or you will have to modify the wiring . Example fitting a UK specs CDI (CI626) on a FRENCH IMPORT bike require to cross the green and the black/yellow on the connector (the one with 4 wires) . Report to page 7

& heres the text part of page 7 (if you want a copy of the complete page which lists what colour of wires on CDI do what, you will need to download the full doc:

ELECTRONIC DE-RESTRICTIONS

You can note that the black/yellow & green wires are reversed, it is necessary thus, if you fit a UK CDI unit on a French bike to make the following manipulation: On the 4 wires connector 4 leaving the loom, use tweezers with sharp ends. Side opposed to the entry of wire you can see the end of the 4 terminals, introduce a end between the plastic and the terminal (that frees the stop) and pull out gently the wire .You do that with black/yellow and the green, then cross them and refit in the connector. In addition, whilst the two terminals are out, grip them a little to optimize the contacts (a small pliers with fine nozzles is perfect). In more pay attention to push well the terminal inside the bottom of the connector. This CDI unit is negotiated on EBAY around £45 (it becomes rare) but is worth £87 new including all taxes, in the same way for the R/C valves unit (less rare) and which is worth £130

cheers,
GAZ

[alains]

it's right for foxeye (JC22) , but for older models (JC20) it's only 2 kinds of CDI : CI572 which is unrestricted and CI589C restricted
both are swapable direct
note : CI589C were sold in France,scandinavia,switzerland & germany
the CI572 were sold in UK & IRL,spain,italia
remenber: JC22 units have an added (white/green) wire which pilot the security stand , this is not the case on the JC20 which has a central stand
____________________
the worst day fishing is better than the best day working

[stirlinggaz]

[alains]

of course yes , the green/white wire is unused
it's possible to build a secret green line through a switch and plug to the ground
but i will find ridiculous to fit a CI626 to a JC20 when the CI572 is the best
____________________
the worst day fishing is better than the best day working

[stirlinggaz]

[alains]

fitting a CI626A on a JC20 is ridiculous because it's restricted and the ignition advance curve is different
the CI589B does not exist and the CI572 isnt rare on eBay, as
https://www.ebay.co.uk/itm/Honda-nsr-125-jc20-cdi-igniter-/281748308519?hash=item4199820227
i saw 2 or 3 others , some sellers are greedy and price shouldnt go over 40 quids
____________________
the worst day fishing is better than the best day working

[stirlinggaz]

[alains]

of course and for information CI627A (or CI627) and CI589B do not exist
____________________
the worst day fishing is better than the best day working

[stirlinggaz]