1998 Honda Prelude Car won't start

The car has an after market alarm, kill switch. The car ran fine, then one day the alarm went crazy and it would not start after that day. I have replaced the battery thinking the cells were damaged. The lights come on but car will not crank up. I looked under the steer wheel, were the kill switch is located. I've tried switching it to off, this does nothing. I also noticed a power control relay, Potter and Brumfield VF4-45F11. I was wondering if maybe a fuse blew in this relay device. I know nothing about alarms or relays. Any thoughts would be appreciated. I'm at a complete loss. Since I purchased the vehicle from an impound lot, I'm stuck figuring out its problems on my own.