Quote:No, not directly a problem with the alternator. Those symptoms are caused by a flat battery, or by a wiring problem, most often dirty connection (slightly corroded battery cables).

When this type of problem occurs, twist the battery cables. It the electrics start working, then it is a cable cleaning problem. See Battery Maintenance for more details.

If the battery was truly flat, the cause of it going flat might be the alternator or regulator or even just the ALT fuse. Test to find out which component needs to be replaced. See http://datsun1200.com/modules/mediawi ... Voltage_Regulator#Testing