I have a '94 4Runner. I love it, but the CD player doesn't work. I removed the old CD player/Tape Deck/Radio and was going to replace it. But, to make a very long story short I have reinstalled the original CD player. I disconnected the battery before doing any of this. Now, when I connect the battery and insert the key in the ignition the anti-theft system goes off. I've tried locking/unlocking the doors with the key and the alarm still goes off when I insert the key into the ignition. Any ideas? I'm going crazy driving my Focus.