Pure Logic Controller hook up

[catmanm7]

I have read a couple of the other threads, but no one really made it clear as to were the box gets power for the secondary injectors. Its the red /blue wire on the box. Everyone says to ground the box to the chassis ground, so I am assuming that the box will be ran off my AC circuit (yellow wire)?
I know I dont want to mix grounds, but can the PL Box run off ac or dc for the secondary injectors. Or only one or the other?
This is on a M7. Thanks

 

[JROD]

DC power for the injectors. Only ground it to the same spot where you tap into your DC power. You don't want to mix up your grounds. I battled this problem for awhile before figuring it out.

There's a lot of good info about this in this thread:
http://www.snowestonline.com/forum/showthread.php?t=246435