Here is a diagram that is appropriate for the common 10si, internally regulated alternator. Can be hooked up "one-wire," but this is the three wire hookup with "idiot" light, for completeness. The connector for the alternator is available at your FLAPS. If the vehicle wants to run on after the ignition switch is turned off, adding a diode in series with the light will fix that. Summit and others have a low cost diode kit for that purpose, or you can source the diode inexpensively at electronics places.