I am in the process of restoring a 1953 Plymouth Cranbrook convertible club coupe. All was going well until the roof motor stopped working; turns out it has open circuited. The mechanic who is working on it told me that the raising mechanism is cable pulled, which surprised me. I thought Plymouths from the late '40s all had electro-hydraulic systems. Has anyone any info they could share re this? After market parts? Or back-yard inventor somewhere in the car's past? Curious to know more.