Dear Matt
I purchased over 50 of those AC to DC convertors. Just for these type of project and for future projects. They are perfect and you do not have to roll your own in this case. The parts to build it would cost more than what the Chinese sell it at complete.
Dear John
Thanks for your reply. In this case I already have those power convertors.
Dear rtr12
Was that $20-22 for the pair or each roller wheels mounts?
Dear All
Now I have a way to get track power to the MP3 player.
Dear Stan2004
What speaker would you recommended for this type of set up. Would the same speak apply to the crossing gate or another type of speak?