A friend of mine is having trouble with his 99 GTP. He is trying to wire up a MSD digital window switch to control his zex dry kit. He tested it out and it turns the solenoids on at the given RPM, but doesnt shut them off (he tested it by spraying fuel into a bottle) does anyone have any ideas why? Or have a wiring diagram for this application? Any help is appreciated.

 

He used this diagram to wire it, but his is a digital window switch and this diagram is for a pill controlled switch.

http://www.cheetahonline.com/n2owiring.html

 

And the digital unit wires up the same as a chip one does.
IS that switch a WOT switch or arming switch. ITs looks incomplete. Did youconfirm with Zex that their TPS can have a 12 volt input instead of 4.5?

Ricky