Here's my two cents worth. I have a nine stall roundhouse and seven whisker tracks around my turn table. I used two 12v 8up relay banks for powering these tracks thru the accessory ports of two AIU's. When I activate a stall/whisker with my remote it also turns on one of these inexpensive (I got these for $1.20 ea.) timer relays and powers up the DCS-RC for whatever time I have the timer relay set for (about 4 to 6 seconds). Here is a pic of my setup.
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