I cant find the answer searching... Is the yellow wire a Ground when the 2 step is activated or is it a ground while off and then looses the ground once activated?

 

Hopefully this helps you out:
http://mssftw.com/files/2step%20instructions.pdf

 

Grounds when the two step is active.

 

Hmm thats what I thought and thats how ive got setup but it doesnt seem to work.. Ill do some more testing on it this weekend. heres how I have it wired, with the ground wire from the solenoids is going to pins 30 and 87a so that when the Harlan completes the ground the across pins 85 and 86, 87a becomes dead disabling the ground for the solenoids.... I tested it twice and each time the nitrous would spray while the two step is engaged..... Any ideas?

 

Sounds like you have it wired right. Do you have battery voltage on 85 and two step on 86 or vice versa?

 

I believe its battery at 85 and ground at 86 but ill have to check. it shouldnt matter tho right?

 

No it won't make a difference.