Darrel, this is my "go to" for electrical parts, see toggle switches
https://www.allelectronics.com...itches-toggle/1.html
This switch will work for you, DPDT CENTER-OFF MOMENTARY MINI-TOGGLE
CAT # MTS-93
https://www.allelectronics.com...y-mini-toggle/1.html
my web page with "Control Lionel RC Track with Miniature Toggle Switch"
https://slsprr.net/features/wiringadv.htm
my web page with various switch uses
https://slsprr.net/features/wiringSwitches1.htm