i recently asked a question regarding why my odometer flicks on and off sometimes. it might come on and stay, or it might not come on for a while. also, some of my door lights and radio lights do not illuminate. im almost certain that this problem relates to the fuses, but i was told i need a cluster replacement. so now, what is a cluster replacement and how much does it cost? can i go to autozone/ advanced auto parts and get it? how much to install labor-wise, as i will not be doing this myself. its for a 2001 f150 extended cab with 83,000 miles and the 5.4l v8