Well here is what the install of the amp under my seat looks like. it went very well...its very clean and I had NO problems.
all the speaker wires went into loom then under the console to and from the head unit...
the power lead came through the fire wall on the drivers side and down behind the kickpanel and then under the door sill with the other wiring....
The ground wire is connected under the plastic cover to the seat mounting point.
the Subs Speaker wiring went out and back along the drivers side under the piller covering and the rear door sill plate with the other wiring and then into the back to the sub.

all the speaker wires went into loom then under the console to and from the head unit...
the power lead came through the fire wall on the drivers side and down behind the kickpanel and then under the door sill with the other wiring....
The ground wire is connected under the plastic cover to the seat mounting point.
the Subs Speaker wiring went out and back along the drivers side under the piller covering and the rear door sill plate with the other wiring and then into the back to the sub.