I have this 1971 AT1 with no spark. I got the motor to turn over today with a very hot battery but I have to connect it directly to the big green wire going to the Dynamo.
I pulled that apart and it looked like the brushes were ok.
So my question is...does everything in these pictures look correct?
Thanks

Pictures did not upload

Manuals have really good troubleshooting and wiring diagrams.  You certainly didn't need to tear the whole dynamo apart to try to get spark.  Most of that stuff is for the starter and generator.  Spark is just the points and points cam. 

Where do the points connect?  Can't tell in your picture.

I took the starter dynamo apart to check the brushes...it would not turn over at all until I did this.
I Have a black wire and yellow wire coming out of the coil...I only have black connected.
Wiring schematic is pretty hard to follow in that area  Thanks

I'm not sure what coil you are talking about.  If you are talking ignition coil it needs two wires (not counting the spark plug wire) but the colors you mentioned don't sound right.

What I asked was where the wire from the ignition points connects.  It disappears from view.  Can't tell if you have it connected to the orange or the green at the junction block screws on the dynamo.

I have a new ignition coil that has different colored wires then oem. Finally attached the yellow( from ignition coil) to the orange wire and black( from ignition coil) to brown. added a hot battery and I have spark.
The odd thing  is,if I turn on the key and hook up a voltmeter to the spark plug cap internals, it reads 12 volts.
Is this normal or is something wired incorrectly...like I said if you kick it over it has a strong blue spark.
Other problem, I can't find where to plug in the electric start wire. There are no open wires that need a mate.
Do I splice it in somewhere?
appreciate any input.

That's interesting re the 12 from the plug wire. Maybe they do do that but multiply it by 1000's or something when the loaded condenser lets rip. So don't have your 12volt meter there when you turn it over live--guessing.

thanks

Sounds like you have the ignition coil wires reversed from what they should be.  

(In other words black should go to points (orange) and battery power (brown) should go to yellow.)

If coil won't spark hooked up correctly it might be one of the many cheap junk coils out there.  A lot of crap of ebay doesn't work at all.

I have no idea what "electric start wire" you are talking about plugging in.  Pictures?  Color?  Location?  Something.

 I guess "i do a lot of that", that the heavy green is the starter wire due to being 'very heavy' & also has a 6mm screw so must be on the correct terminal. Poke 12volts onto it with heavy jumpers & see what happens. earth the jumpers to the motor or engine mount bolt if coming from your car battery or something external. if using the bike battery you shouldn't need an earth jump lead, just a heavy positive straight to the green terminal screw.
I cheated a bit after writing that & found the diagram & took a screen shot--not knowing what i'm doing lol, but think i have it. Shows two greens but obviously is the heavy light green which i guess must starts fro the solenoid anyway after all that. I'll have to edit to add the pic--he said hopefully.