Need to route electrical wires from the engine bay to the interior? There are two access paths: Looking at the engine bay from in front of the car, just left of center on the firewall, you'll see a 3" round rubber plug that has a wiring harness through the center. Pull the edge of the plug out a little and insert a flashlight. Then go into the cabin, pull the glove box open, and you should be able to see the light shining through just above the top edge of the open glove box. The other accessible hole is just under and to the right of the master cylinder. Remove inspection cover on cowl to get a better view. Inside the car looking up the grommet is to the left of the brake pedal housing (2 plastic rivets hold the small black fabric cover in place).