I have a 2000 Civic and i ended up drilling a hole for mine. Does the kit include a firewall gromet? If not go to Lowe's or Home Depot and get a rubber gromet BEFORE you drill any holes in your firewall. Then drill the hole so the gromet just fits like a glove. Run the cable and seal it with some type of sealer and you're done. Nice thing about making your own hole is you get to choose where the cable goes and you might run less cable length.