haha, this is kinda of funny. ill try to help.

when you say you ran a wire threw the firewall, did you drill a hole and run the wire thru? did you use a grommet? did you fuse this wire at the battery? if you have no idea what you are doing you really shouldnt install car audio. not only can you run into problems like you are having now, you can also void your warranty, and you can also set yo shit on fire and burn down the new X mommy and daddy bought for you.

good luck :rolleyes: