97 mustang cobra trigger

look for a wire coming from the box that is violet and look at another that is green.  the violet is a positive trigger and the green is a negative.  According to directechs the door triggers are gray or blue/orange in the car.  It mentions that its on either kick panel.  To check for the wire you must probe the suspected wire by puting your black mutimeter lead to ground and your red lead to the suspected wire and have your multimeter on DC.  Close the door.  if your mutimeter has a 12v when door is closed and then 0v when opened then that would be a negavite trigger, therefore you connect your green wire to it.  The same holds for the positiver trigger.  if you close the door and it gives you 0v and then 12 when opened then its a positive trigger and would connect the violet wire to it.  Good Luck