I have two of them right in front of me. The green wire on the main stator (8-pole round unit w/ 3 mounting screws) is the only one grounded. The two yellows go to the 7 bare copper wound poles, and the black wire with the red stripe goes to the one pole that is covered in tape. There is a metal ground strap coming from this tape covered pole, but no wire leading out to the harness, it just grounds thru the mounting screws. The trigger coil is separate, and it just has a single green wire w/ yellow stripe.
I can't upload pics here for some reason, even Billy can't figure out why. So, if my description isn't cutting it for you, I can text or email you pics, just pm me with your contact info.
1985 Tri-Z 250
1985 ATC250R