Re: Professional Tinkering 6 to 12 volt

Posted by K.B. on January 19, 2004 at 10:08:36 from (209.163.43.123):

In Reply to: Professional Tinkering 6 to 12 volt posted by Kevin Westling on January 19, 2004 at 07:27:49:

1. The purpose of the light bulb is to provide resistance, to keep the alternator from backfeeding through the ignition, which would cause the engine to keep running once the key switch has been turned off. You could use a resistor or a diode instead of the light bulb.

2. The resistor in the line to the coil is used to decrease voltage to the coil to 6 volts. If you run with 12 volts directly to a 6 volt coil, your points will burn up after about 25 hours. A 12 volt coil basically just has the resistor inside of it. Look at your coil, if it does not say somthing like "12-volt internally resisted", don't assume anything, just get yourself a 12-volt internally resisted coil or a 6 volt coil and an external resistor.

3. Ammeters are all the same. Doesn't matter if you run 6 volts or 12 volts through them.

4. Get a new switch. They're cheap. With a bad connection like that, your starter will not be able to turn the engine over as fast as it could, which is pretty much the whole point of switching to 12 volts in the first place.

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