How do you install a boost guage on a 95 ssei, automter guages, do I need a T plastic?

I believe that you just need to hook it to a Vac line. Sol put one in his GP he will be the one to know

I have an Autometer boost gauge. You can put it where ever you want, but you need to run a vacuum line in to the engine bay through the firewall, and T it in to some existing vacuum lines. I don't have any close up pictures of where it hooked up, but there are various places you can attach the line around the supercharger. As for power, if you want the gauge to light up, it'* up to you how you want to do it. I don't know anything about the electrical. I had help when installing it.

all you have to do is find a wire that is on when the parking lights or headlights are on,( I used the dimmer wire off the heater controls) because the lights in the heater controls have the dimming feature. when i dim the interior lights the gagues dim also.