Commando ke30, 2003 Honda Civic

I'm about to install a Commando ke30 in a 2003 Honda Civic LX and I have a question. I've been looking at the isntallation manual online here -> http://www.commandoalarms.com/cs30manual.pdf and one the bottom half of the first page it shows what each of the wires in the loom is for. The bottom one, the yellow wire, says it goes to the ignition switch input. Does that mean a switched 12V wire is that a wire that I don't need to hook up unless I'm adding a starter disable? All that I'm looking to hook up is door lock/unlock, horn and parking light. TIA, Nick