Which wire is the power going into the head unit. I dont thnk its the red one

 

Are you using an aftermarket radio harness to vehicle specific harness? If so, its just color for color.

 

the stock player has 2 connectors, 1 has the accesory power, attena power, 12v power ect... the circular one has all the speaker connections.
I could not for the life of me take out the seats, so i gave up and probably will just let a shop do it. my allen wrenches dont seem to work and I am weak,LOL