This is actually a very easy thing to do...did it in my truck. Took about 3 hours total and works great!!
HC3Z-15A404-A - 27.89 -harness from upper console to a pillar
HC3Z-14A303-F - 190.88 harness from battery to fuse panel w/relay box
HC3Z-28519A58-LAS - 537.14 (this one is for my truck)...