[LMH]

On an original car, the motor is mounted on the left hand foot box. The cable runs through the firewall, through the first wiper post and terminates at the second post. Seems like I remember the cable conduit is flared on each end and fits into the wiper post base. There should also be a flare nut on the motor where the conduit attaches and the cable runs inside. Yes, it’s all pretty greasy!
That’s probably enough to scramble your brain for now!

Larry