Revisiting Heljan's quirky little AC RailBus model with a view to putting a Zimo MS sound decoder in.
Access to the 21pin socket is simple enough, so our MS440D just goes straight in. More of an issue is the speaker, as there is
no additional space anywhere so we have to resort to disguising it in the passenger compartment.
It is just as easy to add speaker wires direct to the decoder, which the 21pin interface is not really intended for, but isn't
too difficult (we can do this for you before shipping the decoder if you need). We use black wire in this case, to make it less
visible through the glazing.
We just use the 'sample' 1000uF capacitor that comes with the MS440 for stay-alive... this also has to go in the seating area.
Paint black if you want to hide it further.
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errors in the information, or for any damage caused to your models or equipment if you choose to follow any of the
steps detailed here.