[Mgs] Coil for 1980 MGB (was intermittent miss)

[Richard Ewald]

A resistor does resist unless current is flowing. So just turning on the key
on an measuring the voltage will show available voltage.
It a straight ohms law calculation. To calculate the voltage drop across the
resistor E= I X R, or if you prefer automotive terms V = A X R. No matter what
value resistor you plug into the formula when you multiply by zero your
voltage drop will be zero.
Rick


Sent from my iPhone

On Jul 31, 2012, at 19:52, "Peter Schauss" <rpschauss at gmail.com> wrote:

> With the ignition on, one wire showed zero volts while the other showed
> about 12.5.  The 12.5 volt wire comes from the CEI amplifier and I assume
> that the zero volt wire comes from the starter