That part number seems to be for the switch.
Might be best to contact TRC or Southwire. Maybe one bought the reel business from the other?
Since you’re in Chatsworth, there are several Southwire repair centers in CA that might be able to help on parts or repair.
https://www.southwire.com/resources/repair-centers
In case it helps, heres a pdf to a clutch/solenoid retrofit kit - doesn’t state for what model reel the kit is for but does list a phone number. If you google the kit part number, several sellers come up. Maybe one of them can help.
Good luck and safe travels!