I have skipped some of the basic stuff, like putting the new headrest in, but the big things are there, Do not remove lower back panel of seat, just takes time and serves no purpose. Run a fishing cable to bring wires through back of seat, saves time and bloody knuckles. Tape cables to fish line and pull through the seat back to the bottom of seat, then test the unit, then close the seat back back up and install FM modulator.
Wallah, finee, kablam, and your done.
