Iv got this but came with no instruction on what needs to wire into what

Rear

It came with a small amount of wiring and a relay but I'm guessing I won't need the relay as in wiring it into the prelude ignition wiring
Any help with this will be amazing I no that the power switch will have the power ran from the battery then from the switch into the push butten but from there I've no clue as I need to have the switch to power everything not just to start the car if you get me..
Iv got rid of the ignition barrel so Ill need the switch to power everything if you get me...