I'm pretty sure a search on here and M.net will provide that. Plus it's different depending on the year of your car.

from the search results that i saw, i found a grounding location that is on the drivers side close to the firewall. it has something grounded to it already, and really close by their are other holes that seem like they would work. i am not sure if this is what braineak was talking about but i am hoping this will work.

good news though is i did run the wire from the vent. i had a small hole already present in the vent maybe 2-3 inches from the opening. i pushed the wire down while my friend felt for it under the dash with his arm up their. we spent more time trying to figure out how we could get it to work than actually doing stuff. it was easier than i thought it would be.
probably tmrw i will actually wire the light to work and feed the other line into the hood area. its nice because my turbo kit should be coming in about 2-3 weeks from begi so i have a few weeks to get all the small stuff taken care off. my intercooler, ic tubing and bov is coming on monday, and i should get my lc1 next week as well so hopefully i can get the lc1 wired up and the ic setup figured out next weekend.
thanks alot for all ur help guys!
i will post up my progress!