This is it! This worked. As my username suggests I’m not the brightest when it comes to this. A million thank yous. EFLs explanation confused me a little.
I’ve electric taped off the wires that don’t connect anywhere anymore but it’s probably best to put a small connector block on each(?)
Not instead as well. The fan to get run on needs two supplies, one is un-switched, the other is switched, so the un-switched powers the fan, and the switched triggers the fan. Without this one can't get the 15 minutes run on required with a non opening window or no window.