While I have the dash out of my car, I am doing some pre-planning on the wiring for the nitrous system. I know I am going to be buying one of the round Dynotune nitrous pressure guages. I am going to put the guage in the A-pillar pod that I have. What I need to know is how many wires are coming out the back of the guage and what they are used for. Does anybody have a pic of the back of a Dynotune guage they can send me?

I assume I will need the following:
Switched 12v+
Ground
Illumination
Wires running to the guage sender