Posted November 5, 201113 yr Hi, I got a woodruff key today, so I think the alternator is all sorted. I tried wiring up one of the CDI's I have but I can't get a spark, is it possible to wire it up without going through the ignition/ kill switch or does it need bypassing some way? So basically I've got four wires from the CDI, two that go to the alternator and an orange one that goes to the ignition coil. What should I do with the remaining wire that would normally go to the main switch on the handlebars, should i be able to get a spark without this last wire? Of course the CDI might be knackered, can these be tested in any way? As I have a couple of them and I don't know if its this that;s not working or something else. the ignition coil looks new to me. Any hints or tips would be greatly appreciated. Ollie.
November 5, 201113 yr Moderator Hi, I got a woodruff key today, so I think the alternator is all sorted.... Ollie. ??? not much feedback there ollie! and it would be good to see you post it in the thread concerning the key so that it may help someone in the future
November 5, 201113 yr Author Well I found it at an auto jumble today in an old crank. Sorry about the different topic i just thought it was a different subject.
November 5, 201113 yr Moderator What colour is the wire? What year of bike? On the older bikes the kill switch is just an earth so rather than earth through the spark plug it earths to the frame.
November 5, 201113 yr The black and white wire goes to the kill switch from the CDI in the newer bikes, maybe same in yours? also if you have a black and yellow wire on the CDI? that goes to the power valve servo, which will make it a CDI for later models.
November 5, 201113 yr Author It definitely doesn't have a power vale servo, the cdi I have is a small box with black + red, black, black+ white and orange.
November 5, 201113 yr No I know it doesn't have a p/v servo, just trying to establish what colour wires on your CDI, as on mine theres orange,= coil, black = earth on frame, black/white = kill switch, black/yellow = power valve servo, blue/yellow = side stand switch, double male block connector with 2 wires light blue & blue = light blue to oil level sender unit, blue goes to clocks and instrument panel
November 5, 201113 yr Moderator black/white should not be touching anything. It earths the bike and should kill the engine. ORANGE - COIL, BLACK - EARTH, BLACK/WHITE - LOOSE (FOR THE TIME BEING) BLACK/RED - POWER Check the earths and where have you connected the Black/red to?
November 5, 201113 yr Moderator The black wire (earth) should have a double connector and connect to the generator and the frame.
November 5, 201113 yr Author The black wire (earth) should have a double connector and connect to the generator and the frame. AHH I missed this!! Thanks very much!
November 5, 201113 yr Wtf is the orange wire coming out the CDI connecting to a Black wire (earth) or is it a cock up typo? surely it should be an Orange wire all the way to the coil? or do I need to put me bins on?
November 5, 201113 yr Moderator I noticed that too Nev. It doesnt make any difference really and in the sealed CDI the orange is, as you know, a good guess for the coil. Also if the sealed coil had a black lead, then I guess orange=black. OK when the bikes were new but when 20 people have cut the ar5e out of the wiring, pretty difficult to guess and we all know what a standard black wire SHOULD do!!
November 6, 201113 yr Author Thanks DirtyDT I tried today what you said and I got a spark, it was the split to earth that I was missing. The spark doesn't really seem as strong as it is from the magnetos on my old British bikes but I've never worked on Japs before so I cant tell if it's normal or not.
November 6, 201113 yr Moderator Put some fuel in it and see what happens. Don't forget to make sure the 2 stroke oil is in it and the oil pump has been bled.
_33963e.png)
_83bc35.png)
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.