I ran my boost hose, and Wide band o2 wires through the fire wall. I started by taking off the Charcoal canister off, and poked through the wire(radio, telephone wires) harness boot with a straightened coat hanger. I fished the wires one by one. I then ran it along the door jam area between the sill, and driver seat up to the "A" pillar. Tapped the power wires in the fuse area. Make sure you dont kink the boost/vacuum hoses while running it. PITA...