current draw
- Thread starter matthew
- Start date
Huh? An electrical circuit only draws amperage while it's completed... If you turn the light off and you still have a 5.6 amp draw, you have something else wrong with the circuit causing the amp draw.
The blaster lighting circuit has basically two parts; the coil itself and the voltage regulator. Because the stator puts out voltage relative to the engine speed (0 volts at 0 rpm up to 35 volts at 8,000 rpm) there is a voltage regulator to keep 35 volts from the headlight which would blow the element in an instant.
The voltage regulator acts as a dead short, resistor, and heatsink all in one. Basically it shorts off all voltage over ~13 VAC limiting the rest of the lighting circuit to that voltage. If you are trying to check the lighting coil before the voltage regulator it will show amperage draw. That's the voltage regulator doing its job.
If you are trying to trouble shoot your lighting circuit, you need to consult the factory service manual. There is a walk through about checking each component to make sure everything is ok.
If you are still having a lighting problem, you probably have a short in the wiring harness and will have to replace that.
The blaster lighting circuit has basically two parts; the coil itself and the voltage regulator. Because the stator puts out voltage relative to the engine speed (0 volts at 0 rpm up to 35 volts at 8,000 rpm) there is a voltage regulator to keep 35 volts from the headlight which would blow the element in an instant.
The voltage regulator acts as a dead short, resistor, and heatsink all in one. Basically it shorts off all voltage over ~13 VAC limiting the rest of the lighting circuit to that voltage. If you are trying to check the lighting coil before the voltage regulator it will show amperage draw. That's the voltage regulator doing its job.
If you are trying to trouble shoot your lighting circuit, you need to consult the factory service manual. There is a walk through about checking each component to make sure everything is ok.
If you are still having a lighting problem, you probably have a short in the wiring harness and will have to replace that.
If it's still drawing 5.6 amps even with the light switch off though, it's a dead short in the lighting circuit. More than likely you smoked a wire in the harness and now it's shorted out.
For what it's worth....Watt's law says Power/Voltage=Amperage. 55w/12v= 4.58A max
What is the rated Amp draw of these lights you installed?
And like civic said, it sounds like a short. What is your resistance to ground from that stator lighting coil? Should be .16-.24 ohms. You will need a sensitive meter for that.
What is the rated Amp draw of these lights you installed?
And like civic said, it sounds like a short. What is your resistance to ground from that stator lighting coil? Should be .16-.24 ohms. You will need a sensitive meter for that.
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