the guage is more of a mechanical guage then an electrical guage
the wires are just to light up the guage when you turn your hedlights on
im sure they had instructions on where to wire it in, its quite simple
tho its not necassary wire it right away cuz the guage doesnt need power to operate. Im sure you can do a search on this page if the boost guage didnt have instructions.
And as for your boost signal you have to tie into that nipple that is on the back of the intake.
make sure your car is cool, and feel around the back of the intake, more towards the passenger side.
you will see and feel a metal nipple sticking out the back of the intake , with 2 rubber hoses connected to it.
Easiest Way to do this, in my opinion, is to take off the 2 bolts, that hold the throttle body on.
Just move the whole throttle body off to the side
Cuz its just a total PITA trying to work back there.
once you get that off
You will see the metal port sticking out of the back of the intake , with 2 hose connections going to it.
one going to the passenger side (for the sensor that controls them orange and yellow boost lights on the dashboard)
and one going to that metal hose that runs along the top of the intake to the fuel pressure regulator.
i think the easiest way is to " T " your boost guage hose, into that rubber hose, that connects that steel vacuum line ( from the regulator) to that (port) on the back on the intake.
If this confuses you, look at the fuel regulator, and follow the vacuum line that connects to it....... back towards the windshield.
you will see where it curves toward the passenger side, and there is a rubber hoses right there, that connects it to the Port
" T " into that hose right there!!!!!!!!!
that should getcha a good boost signal.
make sure you have all them hoses real tight, and make sure they do not leak (try zip ties or super small hoses clamps)
its very important they dont leak cuz that rubber hose to the fuel regulator controls fuel pressure under boost !!!!!!!