Is there an auxiliary input available in the 2008 Nissan Sentra?

Certainly! The 2008 Nissan Sentra is equipped with an Audio auxiliary port located in the center console. If the port or the radio is not functioning, you should check the fuse box. To access the fuse box, locate a small seam or crack along the dash to the left of the steering wheel. Use a screwdriver or prybar to open it. Inside, there are several fuses. Check the back of the panel you opened for a diagram indicating the purpose of each fuse. If the diagram is not there, you can refer to the vehicle's owner's manual. Once you identify the necessary fuse, remove it. Look for a thin strip of metal connecting the two raised sections of the fuse. If it is broken, the fuse needs to be replaced. If the strip is intact, the fuse is still functional and can be reinserted. New fuses are affordably priced at around $10.