Do you know that there is a fuse? Have you looked through/searched in NewTIS, the online repair manual? Here's the link for a 650 RWD, but you can back out one step and look for your actual model. Convertible top stuff will all be the same. But you can search "soft top" and get every hit regarding it.
https://www.newtis.info/tisv2/a/en/f12-650i-cab/