Check with your local auto parts store for a repair manual for that vehicle.
There'll probably be something on YouTube. Barring that, a Chilton or Haynes manual can be bought at any auto parts store.
In order to replace your alternator, you will first need to remove the old one. Check your owners manual for the location and a guide on how to remove.
go to autozone.com and enter your 94 Nissan info,engine size ,2wd or 4wd,then look up alternator,then to the right of screen look up repair guide,it will tell you what you need to know to replace your alternator,good luck.
go to auto zone.com,enter vehicle info and look up alternator and click on repair guide to right of screen and it will show and tell you how.
go to auto zone.com and enter your vehicle year ,make and engine size and look up alternator,then to right of screen click on repair guide,
buy a haynes or a chiltons repair manual for your truck both provide detailed repair instructions
The voltage regulator on alternators of almost all modern vehicles (including all Saturn's), is INSIDE the alternator. When rebuilding an alternator it is relatively simple to replace the regulator at the same time you replace brushes, bearings and other components, but if you haven't done it before and don't have someone knowledgeable to guide you through the process, don't try to rebuild an alternator yourself.
I went to the auto parts store and purchased a book. I have a 1999 mountaineer that trashed the oil pump had to replace the engine, however I pulled the alternator, I am sory to tell you that if you have a 5.0 it is no easy task but the book will guide you. one bit if advice bag and label all the nuts and bolts there will be alot of them.
Remove the headliner board, clean it and replace the headliner material. There is a online guide at this page http://www.wlsheadliners.com/tutorials/s10sonoma/
If you need to remove your ignition switch, you should consult your owners manual. Check for a guide on how to remove and replace and follow the instructions.
Autozone.com has the repair guide, including detailed & illustrated instructions for replacing the alternator on all 2000-2005 Ford Taurus / Mercury Sable. See "Related Links" below on this web page.
If you're not familiar with general brake service, purchase a shop repair manual to guide you and have a trusted mechanic inspect your work when you're done.
According to my Chilton Guide, attached to the back of the Alternator