2003 Polaris ATV Trail Boss 330 Factory Service Manual, Page 196Get this manual
ELECTRICAL
CURRENT DRAWKEY OFF
CAUTION: Do not connect or disconnect the battery cable or ammeter with the engine runningDamage will occur to light bulbs and speed limiterConnect an ammeter in series with the negative battery cableCheck for current draw with the key offIf the draw is excessive, loads should be disconnected from the system one by one until the draw is eliminatedCheck component wiring as well as the component for partial shorts to ground to eliminate the drawCurrent DrawKey Off: Maximum of .02 DCA (20 mA)