If you take off your the plastic vent where your windsheild wipers are, right between the windsheild and the hood, on the driver side. There is a rubber gromit on both sides of the opening from the engine bay into the cab, that takes you right in above the gas peddle i belive. Take a hanger, poke it through and find it somewhere under the stering wheel, it should come out between the brake and the gas peddle. Then run your wire through that,(tape the wire to the hanger and pull it through works like a charm.)
