The International Cessna^® 170 Association

Another possibility is that it is in-line with a 12-volt device that needed a cheap voltage-dropping device, and the bulb serves that purpose. (Of course that would only work for a low-wattage device.) Did you check to see if it's powered? and does the bulb actually work?

Ignoring this device is a very serious matter. We may have to turn you in to the Feds, if you are operating with an inoperable device, even if it IS an undocumented and unknown one.

gahorn wrote:Another possibility is that it is in-line with a 12-volt device that needed a cheap voltage-dropping device, and the bulb serves that purpose.

George, you must've been hitting the St Pauli Girl pretty hard today? No way you'd get a 24-volt device to work on 12 volts by putting a light bulb in series with it. IOW, you can't drop 12 volts to 24. That's NOT rocket science!

Speaking of the Feds, you could lose your A&P with a statement like that!

Miles

It was a typographical error that I failed to proof-read. I meant to say a SIX-volt device...which, in series with a 6-volt lamp (the "thing")... to enable it to operate in a 12-volt system.