Oops, I meant to say R/W. You can also test for resistance while your there.
LOL, yes, I just said the same(our reply's are in ESP mode).....wires are of the same colors! Ya, specs for testing...whole nudderLook at the diagram above it contains the same color wires you mentioned.
G/W and R/W go from stator to CDI.
Now, ya need some specs for testing. IE resistance and voltage specs....
The wires from the stator that provide the charging for the cdi, will have low resistance, and the wire/wires from the trigger coil will have high/er resistance.
Wire colours can change in the same model from year to year or market to market. In the absence of the yamaha manual for the exact model, I'd use my knowledge and logic to figure how the stator is wired and which wire was which
Thank you both Mech and Scooter....I ended up getting lucky with the screws on the cover. two that could get the Kroil came out great...but the bottom one...whew...that one was a screw through a aliment stud..the kroil did not get to the treads on that one. OK, the good thing is I'm now at the start of it all...not working backwards. Someone a long time ago, ..has been in there. They put a black line mark on the gold drum to mark the position with the tab under the lip... I think I will need to investigate this more, because the contact tab on the drum that goes past the pulse coil...seems it should be timed other than where they have the black line mark. but back to the wires guys...As Scooter and I where talking about....we where spot on what ones where for the pulse coil...and I tested them as mentioned by you guys...but this time right at the pulse coil...I got NOTHING...still. However my curiosity got the best of me...even though I normally check the regulator when the motor is running...I wanted to see if anything went through...I left the two different yellow wires on the regulator and tested the outgoing red...and got a reading...even though it's only with turning over the starter....not running. but back to this pulse coil thing...now I know someone's been in here, did they put it together correctly. My thinking is that even if they put the drum on way off the mark..still the pulse coil should show something when the tab goes past it..it does not....on either wire...nothing...so we may be looking at a bad pulse coil unit....Kinda looks like I will have to pull the drum, sadly if I'm looking behind the drum right, the other screw that holds this pulse coil is there...but this is where I have to stop and collect my thoughts and go back online and investigate and see if I can find any useful video's of such. This is NOT what I get into with lawnmowers and the such.(I've been spoiled with one coil, one wire, lol) I have to bounce back to other projects that are more in my wheelhouse ...so....I'll be back sometime next week..see what I've come up with...If ya guys know of a video or link that you'd think is good for me to look at...I'm not bashful....I'll give them a looking! Best regardsDoug, your problem really is a very simple one. You have as I understand it, two wires coming out of the stator, and you want to know which is trigger/pulse coil, and which is the cdi charging coil. Both those wire's windings, should be earthed inside the housing.
If you use your ohm meter you will find one has low resistance to earth, about, as has been suggested, point three to about one point five or so ohms, The other wire will have a higher resistance, probably between about eighty and two hundred ohms. The low resistance is the cdi charging, and the high resistance is the trigger. All makes and models that use the stator to run the cdi are like that.
Once you know which wire coming out of the stator is which, you can follow the bike's wiring to the cdi using it's colours, or the ohm meter.