Gawd? Speedo cables? Dad retired in 1992. He was already using signal wires. I learned to install meters in those days. My new CG3 is a joke to install with the OBD... compared. It's fun to see your RU-vid though.
I sell them myself and they are SS WHITE branded Here are some links 100 Foot Spool recordtechnologies.com/collections/cable-shaft-and-core/products/187-inner-core-flexible-shaft-100ft-hs107 By The Foot recordtechnologies.com/collections/cable-shaft-and-core/products/flexible-shaft-inner-core-by-the-foot?variant=42091788173479 Hope this helps!
You are looking for a RPM (tachometer)cable for a 46 Ford? Do you have pictures of the cable you have right now? Can you email them to me? orders@recordtechnologies.com