Ollie1995 Posted November 5, 2011 Share Posted November 5, 2011 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. Link to comment Share on other sites More sharing options...
Moderator Airhead Posted November 5, 2011 Moderator Share Posted November 5, 2011 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 Link to comment Share on other sites More sharing options...
Ollie1995 Posted November 5, 2011 Author Share Posted November 5, 2011 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. Link to comment Share on other sites More sharing options...
Moderator DirtyDT Posted November 5, 2011 Moderator Share Posted November 5, 2011 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. Link to comment Share on other sites More sharing options...
Ollie1995 Posted November 5, 2011 Author Share Posted November 5, 2011 Hi the bike is 1982 and the wire is black and white Link to comment Share on other sites More sharing options...
NEV Posted November 5, 2011 Share Posted November 5, 2011 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. Link to comment Share on other sites More sharing options...
Ollie1995 Posted November 5, 2011 Author Share Posted November 5, 2011 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. Link to comment Share on other sites More sharing options...
NEV Posted November 5, 2011 Share Posted November 5, 2011 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 Link to comment Share on other sites More sharing options...
Moderator DirtyDT Posted November 5, 2011 Moderator Share Posted November 5, 2011 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? Link to comment Share on other sites More sharing options...
Moderator DirtyDT Posted November 5, 2011 Moderator Share Posted November 5, 2011 Does this help? Click on the pic to zoom Link to comment Share on other sites More sharing options...
Moderator DirtyDT Posted November 5, 2011 Moderator Share Posted November 5, 2011 The black wire (earth) should have a double connector and connect to the generator and the frame. Link to comment Share on other sites More sharing options...
Ollie1995 Posted November 5, 2011 Author Share Posted November 5, 2011 The black wire (earth) should have a double connector and connect to the generator and the frame. AHH I missed this!! Thanks very much! Link to comment Share on other sites More sharing options...
NEV Posted November 5, 2011 Share Posted November 5, 2011 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? Link to comment Share on other sites More sharing options...
Moderator DirtyDT Posted November 5, 2011 Moderator Share Posted November 5, 2011 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!! Link to comment Share on other sites More sharing options...
Ollie1995 Posted November 6, 2011 Author Share Posted November 6, 2011 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. Link to comment Share on other sites More sharing options...
Moderator DirtyDT Posted November 6, 2011 Moderator Share Posted November 6, 2011 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. Link to comment Share on other sites More sharing options...
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