Re: 6 or 12 v coil ???

Posted by rvirgil_ks on July 31, 2007 at 15:07:20 from (24.225.21.48):

In Reply to: 6 or 12 v coil ??? posted by Kevin Mc on July 31, 2007 at 13:35:36:

If you have a 12 volt system with 6 volt coil with external resistor and turn ignition switch on, but engine not running, you should see:

With POINTS OPEN - 12 volts at both + and - terminals of the coil and both sides of resistor.

With POINTS CLOSED you should see near 0 volts at distributor side of coil, 6 volts at battery side of coil and output of resistor and 12 volts at input to the resistor.

This is because with points open there is no current flow and you see battery voltage on coil, but with points closed the circuit is completed and is designed to drop 6 volts across coil and 6 volts across resistor.

Bob

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