I have a 66 250SE Cab and need to replace the wiring harness connecting to the alternator. Does anyone know where I can find one or how to make one?

Also looking to search original information on the car. there is no vin or option plate on the radiator core support.

thanks

I believe the vin/chassis plate is on the passenger side firewall
111.023 chassis.
Trim and color codes are on the driver side fender well rail [ inner]

I have a 111 parts/chassis manul and will check in the AM for part #