NONE OF THE ABOVE!
Actually the easiest solution is to install and use a PIKO switch control box instead of the switch controller that comes with the Ross switches. This surface-mounted, almost "art deco" controller was designed to operate the LGB switch motors that come with Ross switches. To make things even easier, the PIKO control box will take any electrical input, be it AC or DC, and automatically convert it to the exact DC current and voltage required to operate up to four separate LGB switch motors (or other DC accessories). Furthermore, you can easily buy it online on ebay's G scale site where there are several firms selling them right now.