For over 40 years, Seuthe produced smoke generators. When you order a smoke generator it is important to order the right type. It must have the correct measure, and it must be intended for use with analogue or digital operation. If you use a smoke generator intended for analogue use on a digital system, the smoke generator will be damaged very fast. If you rebuild an ananlogue loco with smoke generator to digital operation, you must switch the smoke generator to a similar one intended for digital use. Some models are allready prepaired for a Seuthe smoke generator. You will find information about this in the operation instruction that came together with your loco. On most other loco models (also diesels) it will be posssible to mount a smoke generator, if there is place enough. All smoke genearators may be used on DC or AC operation. REMEMBER to order smoke oil, because this is not included with the smoke generators. NEVER use anything else than smoke oil intended for smoke generators ! Smoke generators without wires have one current pole in the metal case and the other one in a point underneath.