ive gone backwoods engineering with my a/c

91 rmw no blower, replaced relay and 100 dollar module and replaced blown fuse and nothing. I cant take the heat and hot wired the blower for now, any idears?

Basics, does the switch work?

Run 12v right to blower to test?

As far as knowing exactly what im doing? No. I have basic mech knowledge like pre 1970, you start talking computers and brains and im lost. I ran a fused hot lead to the battery and to a 50amp toggle and viola fan works, hate doin it but ya gotta do what ya gotta do. Does the switch work? Im guessing the dash unit works but not sure how to test, like I said im running blind