You probably want to measure the voltage at the coil with the ignition
on, engine stopped and points closed.
What you are attemtping to measure is a voltage that is changing.
Also, even if your meter is measuring a true average, this value will
change depending on the engine speed.
Simon
On Thu, Aug 6, 2009 at 2:13 PM, <Daybell7@aol.com> wrote:
> Greetings MG'ers,
>
> I've installed a generic ballast resister in my ignition circuit and
> voltage is correct while the car is not running: 12+ volts & 6 volts. When
the
> car is running, I measure 13+ volts on the ignition side of the resister
> and 11+ on the coil side and at the coil. Is this correct?
>
> Also, does the voltage regulator affect the operating voltage of the car
> generally, or just the charging system?
> I thought voltage throughout the car should not exceed battery voltage,
> i.e. 12.6V.
>
> Thanks in advance,
> Steve Hughes
> Gainesville, FL
> MGB 1972
> MGB-GT 1968
> TR6 1973
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