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Discussion Starter · #1 ·
Just bought a 1990 and 1991 formula mach 1 sleds
Both Have blown head light bulb. Tail light bulbs and dash light bulbs.
Is a lighting coil or a regulator problem
 

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When the Regulator fails, it potentially allows to much voltage to be produced by the charging system. The over production/Too High of voltage wipes out bulbs, they burn out Dude! Replace the regulator! Good Luck.
 
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