rrman posted:Unless I missed it, what the diode number? Diodes depending on part number, are made with either anode or cathode side oriented towards stud side. For old PW motor whistle, polarity unimportant, but modern locos with electronic whistle and bell, polarity matters.
There is no # visible on the diode, purchased from a large Lionel online parts supplier "Justtrains.com" out of Sussex NJ. They sold two diodes, standard and stud 16 amp (used mainly in the large 2 handle transformer). This diodes markings indicated the stud is the anode (+) and the solder connection cathode (-). Therefore is currently wired the reverse of factory. This transformer was purchased in 1952 and is only used to run post war (1950's) trains. It could easily be wired to factor spec but that did not seem to matter. Somewhere along the line the resistor wire was clipped and replace with a piece of hookup wire. Since they also sold the 1.8 ohm 10 watt resister went with than in place of the resistor wire. The line cord was brittle so that was also replaced with the correct sized molded plug cord.
Any reason to reverse the polarity to match the factory diagram?
