Quote:
Originally Posted by Ronbo
Untrue, amp meters, like volt meters, leave you guessing on some things. A voltmeter CANNOT tell you how much current the alternator (or generator) is producing. Ideally it's best to have both.
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How much current the alternator is producing is largely irrelevant. If it's not producing enough net power, the voltage will show it.
I'll stand on what I said. It might be
useful to have temp gauges for your transmission and differential, too, but most drivers wouldn't find them worth the dash space. The itty bit an ammeter tells you vs the complete story a voltmeter shows isn't, IMVHO, worth the dash space.
Name a problem with an automotive electrical system that a voltmeter, alone, wouldn't diagnose. Go ahead and list everything an ammeter diagnoses, while you're at it - it won't take any more space.
