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Purdy Swoft · 06-02-2018, 10:36 AM

I like the ignition spark and coil tester sold by Brattons .This handy device shows when coil polarity is correct. This tool is on page 80 of the Brattons catalog Part number 17140 . I've never regretted buying the one that ive got . it will work on any old car six or twelve volt . I don't like getting shocked trying to use the pencil trick .

06-02-2018, 10:36 AM	#11
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: Are Model A coils polarity sensitive ?? I like the ignition spark and coil tester sold by Brattons .This handy device shows when coil polarity is correct. This tool is on page 80 of the Brattons catalog Part number 17140 . I've never regretted buying the one that ive got . it will work on any old car six or twelve volt . I don't like getting shocked trying to use the pencil trick .