[B_man_Al]

George .... your right about 1.5 ohms x 2 amps being 3 V . That's called ohms law. But what you are missing is the fact that when the car is running, the 2A is only flowing while the points are closed. When the points are open, (about 30% of the time) the current is not 2A, its 0A. So the meter (analog or digital) is going to average these two currents and come up with what your measuring ..... 2A. But the real current flowing is nearer 4A if the ballast and coil are both 1.5 ohms. You would see the current going from 4A to 0 A as the points open and close on a running car if it was measured with a scope, but NOT WITH A MULTIMETER. It cannot react fast enough to give an accurate reading. Its kinda like your bank account, one day it has a $100 in it , the next it has $0. Over the two days the average in the account is $50, not $100.