Need help with strange smoke problem

Don't know about that particular loco, but I don't beleive the smoke switch setting overrides the DCS setting.

Sound like they have the switch wired up wrong. can you get to the switch and see if there are wires on all three connections. There should only be wires on 2 of the connections and one connection should be bare.

Like this

What is the product number and what do the instructions say?  I did a search on DDA40X, and only PS 2.0 engines showed up, besides the HO.

It is possible that smoke was wired like couplers where only one at a time would be operated.  Since PS-1 smoke runs off track voltage easy enough to wire both to the same switch as mentioned above, or add a separate second switch to have independent control.  G

The PS1 number is 20-2178-1

If this engine was purchased used, it sounds like someone wired the smoke units individually, one to each end switch terminal for some bizarre reason.

It should be an easy fix once you pop the hood.

Rod

Thank you guys; I'll "pop the hood" and see what's going on with the switch.  We purchased it new so perhaps one of those Chinese wiring people didn't get it right.

MTH called it the "DD40AX" and that's why it doesn't show up on the DDA search.

Resolved!  When I got the shell off I noticed there are actually two smoke unit switches under the truck; one for front unit, one for rear unit.  I had switched one ... then the next time I turned it over, switched the other one!  My duh. 

Working fine.

Those smoke units really put out a cloud of white smoke!!

Whew; that was easy!

Rod

Be nice if all the "problems" were this easy to resolve.  In this case it was my dumma; I should have figured it out by opening my eyes.