I drilled mine because its easyer, But when i fitted a sub in a previous car before i went through the hole where all the wires go through in a big bulk in that car it was behind the glove box, take the glove box out and have a look if you can see it, youl know it if you see it, feed your wire in to the car from the bonnet IN that way the fuse will be closest to the battery so if it ever blew it wont fry all the wire through the car.. good luck tho