Finally, I have measured the stall current draw of my Proto 2K ALCo S-1 switcher. I have measured it two times (with the loco running in different direction each time) and in two different locos, at notch-8 while having stopped the flywheels. The greatest value I have obtained is 0.38 Amp; so I think that this nice locomotive will be OK with an small N/Z size decoder rated at 0.5 Amp. I ask myself why the manufacturers don't include these and other values, as the bulb voltage/amperage rating, in the instructions sheet. Sure that they know the specifications of the motors they use, and it would not increase the manufacturing fees to advice "less than 0.5 Amp." or "between 0.5 Amp. and 1 Amp.", instead of the vague "Motor with low amperage drawing" noticed in the Life&Like Proto 2K sheets. DISCLAIMER ADVICE: Please, be warned that this is the value that I have obtained in MY locos. It can be supposed with a certain safety margin that all P2K S-1's share the same motors, but I have no way of be 100% sure about YOUR locomotive. So don't take my advice like a bullet-proof warranty (and don't blame me about burned decoders if it happens that, under the influence of the Universe Mystic Powers, Life&Like have put a more glutton motor in your loky ).