Am I Supposed to See 12V at the Tail Lights?
Re our Coachmen Freedom Express 192RBS: I have a verified measurement of only 10.39V at my left rear tail light. I am producing 13.9V from my 7-pin connector on our Ridgeline at the tail light term...
Forum Discussion
"There is no negative, only a ground"
Perhaps defensible but in an alternating current setting, where a zero crossing point is referenced. Also technically involving when "0" battery volts becomes peak inverse negative during a transient voltage event. I interested, read the following: An automotive DC transient voltage event of greater magnitude may involve a positive oriented peak of say, 150 volts, and a negative oriented gulch of (please don't ask why) 80 volts. Any semiconductor exposed to such a transient gets whacked from both sides of "0".
I use the term chassis negative to denote a connection to a minus supply voltage while avoiding the term "ground" which I reserve for earth ground.
However for the sake of simplicity and comprehensibility, in a DC automotive circuit, ground means battery negative.
The above is only useful for nerds :D
Perhaps defensible but in an alternating current setting, where a zero crossing point is referenced. Also technically involving when "0" battery volts becomes peak inverse negative during a transient voltage event. I interested, read the following: An automotive DC transient voltage event of greater magnitude may involve a positive oriented peak of say, 150 volts, and a negative oriented gulch of (please don't ask why) 80 volts. Any semiconductor exposed to such a transient gets whacked from both sides of "0".
I use the term chassis negative to denote a connection to a minus supply voltage while avoiding the term "ground" which I reserve for earth ground.
However for the sake of simplicity and comprehensibility, in a DC automotive circuit, ground means battery negative.
The above is only useful for nerds :D
