I need to run my oil pressure sensor and wideband sensor wire through the driver side firewall. I know there's a wire grommet near the steering column that's hard to get to (haven't looked or tried, but saw it from under the car). Any other options or should I just drill a new hole? Thanks in advance for the help.

 

^Just drill a new hole. Remember to fill it with silicone to prvent any water from leaking through.

 

There is a large rubber grommet behind the battery where the ECM wired go through. Ther is plenty of room to run other wires. Just use some silicone to caulk the holes.

 

Yeah I would use the place Gilley is takling about. You just have to take off the plastic panel over the batter and the plastic panel on the passenger side of the window. Be sure to use silicon caulk (get clear or black) or else water will get in your cabin when you wash your car or if there's a heavy rain.