Trying to figure out how to wire/control a single crossover using Tortoise SMAIL's (built in decoder). DCC system is NCE Power Cab. The NCE manual goes into setting up Macro's to control more than one device with a single input. I just don't know how or what to do. i just started with DCC last week and I'm in a steep learning curve! Someone advised me to use NCE Switch It's but that doesn't make sense since I don't need a decoder (right?) Thanks for any help.