points are ground. + from coil to dizzy
oin a net charge system, you should show only about 3-4 amps charge with a full charged battery. same with lamps on.. assuming you don't have more lamps than your genny can keep up with.. lamps on, engine running at good clip, a small positive charge on a charged battery. if you hav emore lamps than genny can keep up with.. it will dip to discharge..
engine off, lamps on.. should show a discharge.