301singer foot control?
 

Pedal does not run the machine but the light works. Checked wiring, looks ok. Can controller parts be found or do we need a complete controller?

Are you sure you don't have a motor issue? Controller parts can be bought, but you'd have to know what's wrong with it, which means opening it up and diagnosing the problem correctly.

Do you have a cord from another machine that will fit? If the machine runs fine, then it's a foot pedal issue, if not you may have a motor issue.

Yes it runs fine with another foot pedal. I used it all day today with another 301 foot control. Do we have to get whole new foot control pedal or what kind of repairs can be made and where would we get them?