Re: Question 2

Posted by Bob M on March 31, 2007 at 20:34:27 from (69.205.124.61):

In Reply to: Re: Question 2 posted by John T on March 31, 2007 at 20:16:19:

> CAUTION some lights like an LED can be way toooo much resistance and not allow enough current for excitation THEY WONT WORK The ones Bob uses are still incandescent I believe????????

>Whatch think Bob ????????????

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Right on John! The warning lamp must have a cold resistance in the range of about 10 to 40 ohms.

Less than 10 ohms it will backfeed enough current to fire the coil after the ignition is switched off. And greater than 40 ohms (eg. an LED) will not draw sufficient current to "flash" the alternator at startup to cause it to begin charging.

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