<VV> sick 64 again

[BobHelt at aol.com]

Ray,
Wires are designed to have a very low resistance to current  flow, so 
normal wires have little voltage drop or loss. But the RESISTANCE wire  is 
designed to have a fairly high resistance to current flow. this is defined by  
Ohm's law as E=IxR, or voltage equals current times resistance.Thus when 
current  flows thru the res wire there is a voltage drop across it. When the 
points are  open, no current will flow thru the res wire and thus the voltage 
drop across  the res wire is zero and the 12 volts appears at both ends of the 
res wire. But  with the points closed, current does flow thru the res wire 
(when the starter  isn't activated), and there is a 4-6 volt drop across the 
res wire. This drop  lowers the voltage that gets to the coil to about 6-8 
volts.
HTH
 
eEgards,
Bob Helt
 
 
In a message dated 9/17/2013 9:31:48 A.M. US Mountain Standard Time,  
corvairgrymm at gmail.com writes:

My  understanding (this caused me much confusion before I was told) is that
the  points MUST be closed (or a test lead used to ground the negative side
of  the coil) in order to get the reduced voltage reading showing the
factory  resistor is intact.  Without doing this you will read the full  12
volts.