Hey man, you come here asking for help and no need to get defensive. Obviously you did something wrong because you installed the alarm yourself and now your car isn't right.

When you said there's no power to the alarm, you did get the power directly from the battery right and now from the ignition wire for your alarm? If the ignition wire has no power coming from the battery, did you check the fuse? Did you try to run a wire directly from the battery to the iginition wire to see if everything turns on? There are alot of troubleshooting things that you can do.