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International Automotive Technicians Network
Re: Spark Testers - useless vs useful
Posted to Tool & Equipment Forum on 8/26/2019

Could not tell it in the radio has I recall.

Remember back in the early days, how to test an ignition coil polarity with a wooden pencil? Back when some of the coils only had a sticker to indicate positive. Of course the sticker was long since gone.

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