As far as I can recall (it's years) the Peco turntable does not need an auto reversing unit, it has a copper slip ring inside of it, that only supplies power to the unit when it lines up. The worst that can happen if you try it is I save you the cost of an auto reversing unit. Not all turntables require this, the Hornby one for all it's short comings and lack of appearance is highly DCC friendly and does not require an auto reversing unit either. You can use any old poor specification decoder to control a turntable if it's motorised, and the nice thing you can have total control over it's speed. Just pre program it with CV1 before installation.