Window lifter cable pull switch C70 convertible

Hello together, at my C70 Convertible BJ 2003 the days of the rope hoist for the window lifter passenger side have said goodbye, of course just before a thunderstorm broke off. A new window lifter costs with the friendly 650€ without installation! A rope hoist repair set at eb** only 50€. Has someone had experience with it or is there perhaps even something like a guide / assistance for something like this? Unfortunately, despite intensive google could not find anything concrete, or I have the wrong g Greetings Bundescaster