Shorted out the radio amp power wire

Ok my first time plz help my 2011 silverado 1500 ltz 5.3 I installed an aftermarket amp in my truck I went from behind the head unit to the connecter with the speaker wires an power on it I believe it bypasses the stock amp I went to install it an shorted out the red thicker gauge wirer with the yellow stripe on it an now I lost power to my windows An radio an I have a lock on the dash an it's telling me I gotta check my air bags oil an a lot of other stuff the ignition doesn't crank I got nothing checked every fuse an they r all fine what could I have shorted out I put power from the sig lighter to the red with yellow stripe that lost power An still got nothing plz help I don't got a a lot of money to just dump into parts guessing or for a shop to rip me off