Posted by Bob on August 31, 2019 at 03:44:34 from (64.255.159.199):
In Reply to: Ignition coil voltage posted by Northvale PA on August 31, 2019 at 02:33:30:
"Parts guy explained a 6 volt will help the points last longer."
Parts guy was BADLY misinformed! A 6-Volt coil used in an ignition system WITHOUT having a resistor to compensate for it will KILL the breaker points.
The 2010 had a resistor on the back of the ignition switch, or some had/were changed over to a length of resistance wire, making it OK to use a 6-Volt coil.
(Note the starting bypass connection in the drawing.)
The advantage to using a 6-Volt coil AND a resistor in the primary circuit is that the resistor can be bypassed (by a connection to a special post on the starter solenoid) during cranking to make for a "hotter" spark by compensating for the dropped battery voltage that occurs during cranking.
On the other hand, if NOT using a resistor in the primary circuit you MUST use a "true" 12 Volt coil designed with more primary windings to allow use on 12 Volts without drawing excessive current that leads to burned points and/or coil failure from excessive heat.
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