Need a bit of help guys. I'm no stranger to wiring (or instructions for that matter) so that's not the problem. The problem is I know jack all about this sort of stuff, just recently buying my first Skyline. Went in to have a look at my stock solenoid and give this a shot when I found this:
That plug was just sitting there as well, not connected to anything, but I still have the two stage boost. Can someone tell me what this is? And if I can still do this mod or not? Thanks .