Do the frame bolts work themselves loose? Turned AC switch conundrum

Good morning Dick,
Thank you for the kind words.
The relay is prewired and I got it from Amazon (surprise :sweat_smile:).

Directed Electronics 8616 Relay Assembly Mini https://www.amazon.com/dp/B000CJ05WW/ref=cm_sw_r_cp_tai_LqzfFb9ZZZF6A

I have also ordered a 3 step fan control switch, that I think will work as a replacement for our old switch with the relays to handle the current.
For now my AC is working and the new switch is just o make an experiment and to have it as a spare.

Cheers … Ole