My DDA40AX has 3 horn selections with the CV# 115, default # 0 then #1 or #2 for different Leslie horns but when I input on my MRC Tech 6 it does not change the horn sound---P115 enter, 0 or 1 or 2 enter, no change. Also with my DC GP40 running I assume I need to run my DCC/sound DD40 in DC or analog to run both locos at the same time? 

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Have a GP-40 powered unit diesel, would like to use it as a non powered dummy unit behind a new powered unit, is there a way?

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Have a GP40 DCC ready loco, does it have a speaker already or do I have to add?

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Have a DCC ready GP40 #63528 that I received, have also a MRC Tech 6 controller for the track, want advantage am I going to receive by adding a 8 pin decoder for $35.00? And is it worth it if I'm not adding a sound board which is more expense.

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Is this Loco DCC Ready or not, have found some that are and some are not with this stock #. It's a GP40.

Does Bachmann still make the 160-44932 EZ command? Did not see on their website, I've been told it only has 10 functions and some people say that it has more by moving some shift button to get 10 more, don't see it in the instructions, anybody? Thank you