Re: No spark?
6v/12v postive or neg earth dosent mater heres some quick checks you need a multi meter so check for power at coil in check for power at coil to dizzy then if ok there connect multi meter to dizzy in and earth and rotate slowly ohms reading should go from 0 ohms [pionts closed] to infinate [pionts open] and should repeat cycle as you rotate so if ok check for coil circut ohms readings [ check coil specs they vary] not much else goes wrong then all you need to do is make sure coil suits the voltage and setup [with or without ballast resistor and is poled [installed ] to suit +or- earth [simple check if its running remove a plug lead and place an ordinary lead pencil in the arc if it flares towards the plug polarity is correct ps use gloves it bites ]
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