what do you mean by window switch?

i guess i could do it myself but there is that worry inside that i may jack it up big time.

and where does this plate go?

 

1. lets you set what rpm the nitrous turns on and off
2.take your time and test it out while the lines are not going into the intake to make sure all is well. Then start off with a small shot for more testing.
3.between the plenum and lower intake.