I have a MTH sd40-2 NW proto 3 diesel engine. I've found another MTH sd40-2 shell (different rail line) that I like better. Any problems switching shells?? Thanks for your time,
Kenny
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Shouldn’t be a problem as long as it is PS3. All lighting in PS3 diesels is LED. PS2 is a mix of 6v and LED. If the new shell has additional lighting, the harness may not have connections and the original sound/chain file may not power the extra lights.
WM never had any SD40-2’s
WM may not have, but MTH put one out. 20-2538-1 The sd40-2 are my favorite engine and I love the circus colors.
From what I've seen, the PS2 shells use little contact springs that touch a foil plate on the frame. That's how the power makes it to the lamps. Could be as many as 8 of them. Just watch out when you take it apart. Also, when switching rail lines (I've done it 3 times now) you may find some carbodies use a different combination of the springs, depending on what the original RR had specified for lighting.
If they're PS3, then you should find 2-pin connectors in there, but as noted above, they may be powered differently based on the requirement of the specifying RR.
@Lehigh Valley Railroad posted:WM never had any SD40-2’s
They didn’t have SD40-2s, but they did own SD40s. Visually similar and good enough for O scale.
Tom
