my lights keep flashing and drains the battery

Have you tried to lock and unlock driver door with key?

The factory alarm system would flash the lights, blow the horn, flash a red "THEFT" light on the dash and disable the fuel pump - you couldn't drive it. It sounds as though there is an aftermarket alarm system (usually installed poorly) that is messing up. Try this: disconnect and charge the battery with a charger. Turn the ignition switch to "ON" and reconnect the battery. I've seen this trick work on several alarms - but not always.

Crystal, did you ever find out about your lights.. mines getting ready to go on a tow truck now:(