You need to buy a multimeter, or at least a voltmeter. First make sure that the alternator is outputting an appropriate voltage. You can do this by measuring between the (large wire) output terminal at the alternator and ground (the engine block). If this isn't AT LEAST 13 volts, then you have an alternator problem. Normal running alternators output about 14 or 14.5 volts. If yours is not in this range then you may have a regulator or alternator coil failure. These can both be replaced if there is a guy in your area that can/will do it. If the voltage is OK then you follow the power wire for a drop in voltage. Check from the alternator to the jump-start post (right side of engine compartment), Also check the power connection behind the black cover on the rear right of the engine bay. I had a loose wire in there once. Jim On Fri, 18 Jul 2003 22:18:35 -0000 "TalksToGod" <5n-@xxxx> writes: > I am having a tough time with my DeLorean's electrical system. The > case is- my regular Motorolla alternator is producing only 10.5 > volts > shown on the gauge constant. Constant meaning-When I am to put on my > headlighs or my fan (heat/AC) the voltage will drop down. The > problem