I just did the upgrade and the directions tell me to splice the yellow wire on the solenoid and the ignition wir, which yellow wire is correct for the one on the ignition the one with the dark green wire or the one towards the IM with the red wire.
Left or right in the picture. THANKS!
(http://i1069.photobucket.com/albums/u479/Logan_Zehr/IMG_0034.jpg)
The yellow wire from the solenoid should be spliced into the the yellow on the right side of your picture.
thank you!