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PlanePower FS1-14B alternator and low voltage light

chris mitchell

Well Known Member
I am planning to run an FS1-14B as my main alternator in my RV-4 (day VFR only).

When I installed it on my engine I noticed that the lead has the field wire to pin 3, a jumper from pin 3 to pin 2, but unlike any of the belt driven Plane Power alternators I have seen, there is no lead from pin 1 to drive a low voltage light.

Does anyone know if pin 1 will provide this function? I have emailed PlanePower, been redirected to Hartzell, but so far no reply.

Thanks

Chris
 
Most Plane Power alternators have two wires coming from the unit, a red for field that connects to two pins as you describe, then a white from the third point that offers ground if the alternator fails. Is yours internally regulated?
 
Yes, it'll drive a fail light - at least my 2014 era model does.

Expect it to be considerably flickery, especially at low RPM. Suggest using an incandescent light or a power resistor in parallel to an LED.
 
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