Pivot Voltage Stabilizier.
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now there's the new red and yellow raizin spark besides the old blue raizin voltage stabilizer.
anyone know's what exactly is the difference? consider getting one but dunno which one to get... -
Seems like certain car models are suitable for the red one while certain car models for the yellow ones if i did not remember wrongly
Guess gonna check with the local distributor for which one is suitable for your ride 
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They are supposed to function differently. The connections are different too. I remember reading 1 of them is for initiation, maybe connect to the spark plug or something.