??GReddy A/F ratio gauge install??

[thermalfi'd16]

I have a few question on the install of the GReddy A/F gauge. The person who sold it to me is taking too long to respond. I dont even know if he will respond. So please help if you can.

On the 5 wire cable:
1) RED is constant 12v= meaning it should be wired up on the + side of the battery right?
2) ORANGE is switch ignition 12v= meaning it should be on a non-constant 12v right?
3) WHITE is parking light= what is this? Does this mean tap it into the parking lights on the bumper? What is this got to do with the A/F ratio?
4) BLACK is ground= self explanatory.....
5) YELLOW is option= I think is not required

Correct me if I'm wrong, the GREEN wire beside the black connector should not have to be wired if I use the provided GReddy O2 sensor right?

There are also 2 loose wires beside the clips that plug into the data link module. RED says that it should be to the "switched ignition to power heated sensor".... Is that the primary O2 sensor wire from the ECU? The other wire is BLACK which is ground.

Your time is greatly appreciated.