Hopefully someone has one similar, as I look at the controller further, I'm not positive if the information below is completely accurate.
It looks like yours has been converted to use a plug and foot controller like
https://www.amazon.com/Control-Feath.../dp/B01KINEQTO I'm thinking you have no plug to plug into the house electrical outlet.
My 99 has two plugs in the back of the side compartment. I have a picture of the plugs, too, but since you have the Singer three pin plug, you don't need that.
It looks like you need a slide plate like
https://www.amazon.com/SINGER-Slide-.../dp/B074L1318X
which would be installed as page 29 of the manual you linked to. There is another manual from singer.com for a machine like mine at
https://res.cloudinary.com/singer-se...ng_Machine.pdf and has instructions on installing the slide plate on page 14 of this manual.
Okay, so you have a combination machine. Your machine has the older, non-numbered, tension and the screw stitch length regulator, rather than the lever type. However, you have a more modern plug.
Thank you for the picture. There are lots of places and prices for the items needed, I just gave links to the first ones that popped up so you know what you are looking for.
Janey - Neat people never make the exciting discoveries I do.
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