Welcome to the forum.
One option would be to hardwire the router to run when power is applied, then mount this onto a router table w/ it's own front panel power switch, like shown in my router table topic. (Note, not possible for me to post a link until my post count exceeds 10, but it is in the Table-Mounted Routing forum.)
Another option is to contact a custom cable fabrication company. They make parts to-order, w/ specific ends and length that would work as a replacement for your application. The cost will be high, but those costs might be defrayed to have multiple copies fabricated, then sell those as replacement parts on-line for users in the same boat.