DHV90
Member
Evening all looking for a bit of guidance.
Im finishing an unfinished project boat and am trouble shooting the no-charge on both 12 and 24v alternators. The exciter circuit indicator lamps are both rated at 3mA so wont pull enough power to the coils from my limited understanding
The dash is reasonably nice and adding a bulb holder big enough to take a 3w incandescent bulb would look rough, so I would like to, if it is possible, use the parallel resistor method to draw current to the field coils and keep the existing idiot lights (for now at least)
Can anyone explain the maths to me so I can figure out which size resistors to wire in to each side to try and ensure the alternators cut in at a low rpm, and at roughly the same time.
Is roughly the same wattage as an incandescent idiot light bulb (3 or 4 watts) and fairly low Ohms of resistance be sufficient?
Many thanks
Im finishing an unfinished project boat and am trouble shooting the no-charge on both 12 and 24v alternators. The exciter circuit indicator lamps are both rated at 3mA so wont pull enough power to the coils from my limited understanding
The dash is reasonably nice and adding a bulb holder big enough to take a 3w incandescent bulb would look rough, so I would like to, if it is possible, use the parallel resistor method to draw current to the field coils and keep the existing idiot lights (for now at least)
Can anyone explain the maths to me so I can figure out which size resistors to wire in to each side to try and ensure the alternators cut in at a low rpm, and at roughly the same time.
Is roughly the same wattage as an incandescent idiot light bulb (3 or 4 watts) and fairly low Ohms of resistance be sufficient?
Many thanks