To get an accurate picture of the voltage drop, you need to check at each part of the circuit with the system operating. Even with bad connections, you'll see full battery voltage to the end of the circuit with no current flowing.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!