What's this switch? Post Posted 02 August 2019, 7:47 AM #1621144 (In Topic #221791) Vic Settled In What is the switch on the bottom of the stack that has a little circle on it for please? It doesn't look standard. The cars not hooked up for any electrics at the moment. 0 guests and 0 members have just viewed this: None. Forum home Helllllpppp!!