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Hi guys, new to all of this too! Have had problems with no spark on my zx400 A 1985 and have traced it back to the CDI Unit. Due to the original part being so expensive, I have sourced a CDI Unit from a 1999 ZXR400. Do you think this will be transferable?

Have attached a docco of both wiring diagrams, can anyone shed any light?

Cheers,

Tris

ill go through it with you like this-

YOUR WIRE COLOUR | WIRE COLOUR OF L CDi

a minor caveat, i dont have the 1999 wiring diagram, so i will show you how to attach it to a 1994 L CDi, ill try to take a picture to show you where the L wires connect to the CDi

these are all the same in both bikes:
black/white | black white
yellow | yellow
black | black
green | green
black/yellow | black/yellow
green/black | green/black

these 2 need to be made up, and im pretty sure they can use the same feed wire:
? | grey (you need to make a switched live wire, i suggest a feed from your ignition YELLOW wire that goes to the kill switch, on this feed wire alone you will need to insert a 1W 100ohm resistor)
? | brown (you can use the same YELLOW ignition feed wire BEFORE you add the resistor!)
as an alternative to this, if it will fit, use an L model ignition barrel as this has the resistor in it, and will have the two switched live wires as seperate wires.

this is redundant:
red | N/A (there is no need for this wire, cut it and tape over the end).

this should work...no guarantees as its not something i have ever done. please check it over yourself and see if you agree/disagree.

Hi Banner, all sounds promising to me. I'm willing to give it a go but I'm still confused as to where the wires go on the new plug. Have attached a picture of the new plug. Can you help?

If you can wait till tomorrow evening ill make sure to check my L4 and post on here...although im sure its on here somewhere...