Leon is right, most are NOT labeled as clearly as his is.
SugarCopper
As Cari said you should have some wires coming off the machine. The cord block can be found here -
https://www.shop.sew-classic.com/Cor...143-SCE143.htm
You'll notice one end has a plug to plug into a wall outlet and the other has two wires that would connect to the foot pedal - aka motor controller. Sew-classic has a wiring service at
https://www.shop.sew-classic.com/Foo...SCE-Wiring.htm
And for your machine you would want either of these foot controls to be wired to the cord block.
https://www.shop.sew-classic.com/Foo...p-SCE168FC.htm
https://www.shop.sew-classic.com/Foo...TAL-SCE507.htm
If you do not have a manual, one that comes close can be found at
http://ismacs.net/singer_sewing_mach...al-rotated.pdf
Janey - Neat people never make the exciting discoveries I do.