Re: Dreaded parasitic battery drain
Actually put the meter in the 2v setting at the 10 o'clock position on the dial. With the red lead in the V spot on the lower left of the meter and NOT in the 10A spot to do this test...
Start the car, turn the blower motor on high, bright lights, wipers, A/C, etc. all electronics you can turn on turn on.
Measure the voltage from the engine block to the NEGATIVE battery post. actually on the lead post of the battery not on the part connected to the cable but the actual battery post. You should see no more than 0.2 volts. This proves the negative battery lead is not corroded or there is a poor connection at the battery or the block.