hey guys i have a 2001 alero and i got an aftermarket stereo for it i just bought the wire harness connector and hooked it all up but the stereo has no power i matched all wires color for color and theres 4 wires that had no matches for them orange/white for dimmer, orange for dash light, blue for power antenna, black/white for amp ground, none of these wires are for power is there a reason it could not be working? did i do something wrong?
You bought the wrong wire harness. The factory radio in the 2001 Alero is data-controlled, meaning there's no key-switched power wire in the radio harness. If you look closely at the red wire in your adapter harness, you'll see that it doesn't match up with any wire in the factory radio plug. In this vehicle, you need a data adapter module like Metra's GMRC-01 to properly install a new head unit.
