i have a 2007 ex civic and someone put in a aftermarket alarm and i just put in a new battery and i had to reset my alarm and now one head light wont work or my stereo my key wont unlock or lock my car now so please help me

 

undo what you did. Sounds like you have the wiring mixed up.

 

i have every thing hooked up right

 

If someone else did it then how do you know it is hooked up correctly?

 

Must have missed the part when you said someone installed it.

Did you pay someone/shop? If so, take it back to be fixed.

If this was a previous owner who did the install, I am not sure why you would have purchased it if you didn't think you could fix it yourself.

Stop forcing us to pull information from you.