Yeah - I wasn't suggest you do that.
Just checked on mine, the solenoid -ve was the black and the white was carrying the +ve 12v
Might try this mod, seems fairly good for some extra low end. Why would Nissan put such a thing on? Traction issues maybe...? Cant see it really helping the engine to last longer..
I was told to get a FMIC before playing with boost but this seems fairly harmless as the car is running the higher boost at higher rpm anyway..
Any thoughts?