I am having troubles starting my 80 without a jump. The starter will not engage the first couple of tries and sometimes not at all. The battery is new and the alternator "appears" to recharge the battery just fine. I have been adding stereo equipment over the last 3 or 4 months, new head unit speakers and 2 amplifiers. These all hook directly to the battery but "shut off" when the radio is off. I would prefer, however, to track the problem without guessing at its source. I suppose I'm asking for info on properly testing the alternator, battery, starter/solinoid and the actual drain on the batter when the car is on and when it is off. Any ideas appreciated.