have no power to the starter relay

If you have no power to the yellow wires at the starter relay your problem isnt the security system.There is a large red wire going to your ignition switch does it have battery voltage? No power on any of the yellow wire has nothing to do with security. Because you should still get power from the yellow wire from the ignition switch. See if the yellow wire from the ignition switch has power coming out of it when you turn the key to the start position. Also the big red wire to the ignition switch should have constant power.