hey guyz i need help! i installed my amp and sub today...but the problem is its not working...wen i turn the car on, the red light from the amp turns on for a second then turns back off...whats the problem? please help~!

probably need a better ground

almost cirtainly an earth problem most car electrical issues are! Make sure you have bare metal showing when you connect the earth to the car. Also check the remote lead from the head unit, the red led from the amp may spike when 12v is put across it but without the remote lead singnal from the Head Unit to the amp's built in relay it wont come on.

Hope this helps.

power line goes to battery with a good fuse. ground cable goes to a good clean ground. Remote cable goes to the remote wire on your harness. make sure fuse is good on amp as well. speaker wires are the easy part.