Not long once I had worked out how to get everything apart, around 1hr 45min all up, the biggest problem is getting the "A" Pillar covers off where the air bags are to get to the initial connection, then its just a case of threading the cables through the maze behind the dash. Did a reversing camera a few weeks ago and it was way easier.I recommend to anyone trying anything like this to get yourself a trim removal kit off eBay, really cheap anywhere from around $10 upwards, saves so much time and damage to the car trim, cover the gear shift area with a towel or small blanket to also prevent damage especially to the touch screen or audio equipment.