I will caution about running out and buying new brushes. The alternator light has several causes, and new brushes may not fix the problem. So inspect the brushes, and the only buy new ones if they are below the limit.

Well I've just had alternator problems. My bearing seized in my alternator so it needed to be reconditioned. Before it seized the light was coming on every once in a while. The local auto electrician did it for me for a very good price and replaced the bearing and the brushes.

DD is right however. Start with the easy things first. Check your fuses, Test your battery. Don't assume its the alternator. There are other elements in the charging system. No sense paying to have your alternator fixed if thats not the problem. Identify the problem first.

Yep the brushes are really worn down. So now to find and auto elecy that had them. Do they come as a unit or just brushes? If its just brushes do u have to solder them in?

They come as a unit. You can get them from Nissan, from mail order, and they used to be available (maybe still are) from Supercheap and other auto spares places.

$2.66 USD at RockAuto.com