OT-Re: Happy New Year!!!!!!!

From : william boyd

Q: i dont think maz realized that we were talking about voltage drop across the wiring. i realize exactly what you were saying and i got battery voltage. sorry to disappoint you folks but i do know what i saw and how to operate a vm properly. no you dont. he just looked at the empty socket found about 12 volts there and concluded that no volts dropped on the ground or something. hardly. if the bulb was not lit then you basically did the same thing so yes you did. i find it fascinating that anyone would believe that an automotive electrical system would show anything but battery voltage no matter what load was placed on it. i find it amazing that you would ever say such a dumb thing. well actually no i dont. check the voltage on the lighting circuit youll find the same voltage at the battery given the same load. you do realize that both the battery and the load are in the circuit and thus will read the same voltage right so it doesnt matter if the circuit has amp robbing stuff in it or not the voltage at the battery damn well better be the same as that in the circuit. like i and others have said you just dont get it. the load is the circuit and that includes all of the wires connectors and switches. any component that has resistance and all of them do will cause a drop in voltage and when they are all added up you will get the battery voltage. but to say that a modern charging system with a voltage regualtor remember that cannot compensate enough to keep a nominal charge voltage of 13.5-14.5v from dipping below 12v in any circuit when the headlights are operating is reaching a bit. it is doing no such thing. the regulator does not monitor every circuit because doing so would be pointless since they all have different voltage drops at different points. id be further fascinated to know what you think the voltage drop is in an ignition circuit or any of the circuits in the pcm network since you think the headlights drop the voltage so much. the voltage drop you are supposing ought to cause havok in the sensing circuits since they are monitored by the millivolt in some cases. yawn is this ever going to end. the voltage drop within the headlight circuit is within the headlight circuit and has little effect with the main circuit because as you said the regulator will compensate for it out there. as for the sensing circuits the computer sends the power to most of those circuits and measures the return voltage against its internal reference so minor voltage fluctuations have no real effect on it. notice that your 2 volt drop when your grid heaters come on the truck doesnt go bezerk. hell with new batteries the grid heater in my 00 only drops the voltmeter on the dash from 15v to 13vengine running. ill bet it draws more than the headlights and it still cant pull enough amps to drop voltage below 12v and yet the headlamps dim. wow maybe its the amperage draw that is the cause which as i mentioned before is the reason why mr. stern supplies a heavier guage wire not the volts. like i said you just dont get it. if your volt meter drops 2 volts that would indicate a voltage drop now wouldnt it. and thats on the heavy wires of the charging system. the amperage draw is the reason for the voltage drop. or is my voltmeter incorrectly installed from the factory your volt meter is on one circuit the headlights are on another. -- if at first you dont succeed youre not cut out for skydiving .