Self explanatory, I am going a little insane trying to figure out how to do it right now. So I have a 2004 grand prix gt. I bought the gmos-04 harness, the dash kit, and the antenna adaptor as well so I am thinking im good to go... Well ive been all over the internet and keep finding that people are always having trouble with installation. So is there a guide around here? I already installed my new stereo and it powers on but there is no sound, a typical problem it seems. The general consensus is that the blue wire on my new HU is not connected so how do I do that? The stupid instructions just say to connect the blue/white from the gmos-04 to the blue/white wire on my HU and I did.. So here is my stereo PowerAcoustik - Source Units - Inteq - PD-931NB. What am I doing wrong? Could it be that the factory amp just cant power my new stereo or is it not receiving any power at all? Btw the blue wire on the stereo I am trying to currently install is for the power antenna which I would think is useless to me so I taped it up. Please I would love if someone has ever written a nice guide or something I feel the instructions that came with the harness are just not enough.