Hi Billy, I'm pleased to assist you. There are a lot of videos on YouTube and Google with step-by-step instructions on how to install the alternator. Just type "How to replace the alternator and add the year, make, and model of the vehicle". Click on the link below to order at 39% off the regular price while supplies last. I hope this is helpful. Enjoy shopping at Carparts.com!https://www.carparts.com/alternator/quality-built/mpa7078207?can=CPGG4850

Hi Dave, This item uses and requires an external regulator.

Hi, This part only fits 1968-1970 Mercury Cyclone. To check the fitment please use our Vehicle Selector — which can be found towards the top of the homepage as well as all category, search results, and product pages — can help verify if a part will fit your specific application. To enter your application, simply select your vehicle’s year, make, model, sub-model, and engine type and click “Go.” Once your application is selected, you’ll see a “Guaranteed to Fit” badge if the part will fit, and we recommend that you also double-check Your Vehicle Fit Details as well as the Vehicle Fitment Information table on the product page.