Kannst Du uns bitte mal den Link zu der Auktion schicken? Vielleicht sehen wir dann, wo das Problem liegt. Ein Schnäppchen auf eBay klingt bei DER Lok ned gut, wenn ich ehrlich bin.
Could you please link your auction here so we might get a clue as to what's wrong? "for a bargain" doesn't sound too good here... :-/.
So ganz grundsätzlich:
(1) Laß die Finger vom Trafo, wenn Du Dich mit sowas ned auskennst!
(2) Die alten Playmobilloks bekommen ihren Strom über die Schienen. Die müssen aus Metall sein (die 4054 kann nicht auf den Kunststoffgleisen der 5258 fahren - eine Thomas-Lok von Playmobil gibt's nicht, was ist das für eine Lok?).
(3) Bei der 4054 ist ein Motor im Tender verbaut (ist der drin?) und unter dem Tender müssen zwei Schleifer hängen, die auf dem Gleis aufliegen und den Strom aufnehmen. Sind die da?
General issues:
(1) Hands off that transformer unless you know how to handle that thing!
(2) Old Playmobil engines need metal tracks for power supply. They don't run on 5258's plastic tracks (and as Playmobil never issued a Thomas the Tank engine loco I've no idea what kind of enginge you're talking about).
(3) 4054's fitted with one motor inside the tender (is there a motor inside?) and there ought to be two skates underneath as playmofire already explained (are there?).
jj:
Now, as I've made clear- I'm nowhere near an expert with these sort of trains; so maybe I'm just confused. But here's the original listing:
https://www.ebay.com/itm/324690194470?nma=true&si=eOGOTyGQT9QMDxJA5f9sv4bWSK0%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l25571: Yes, please tell me how to handle a transformer and tracks!
2: Lol, Thomas the Tank Engine is another brand entirely. I just used that as an example of the only kind of trains I've dealt with personally. They're battery operated and have wooden tracks.
3. If by "skates" you mean those metallic legs then YES! It still has those attached. From what I've seen, the seller was NOT lying about the train being complete. It even has the bell it originally came with. I'll see if I can get photos on here somehow.
Edit: I think I understand now (with help to Marco). I assume that the transformer sends electricity through the track, it travels up the skates and powers the train like that. Is that how it all works?